Mitsubishi PUHZ-SHW80VHA-BS, PUHZ-SHW112VHA, PUHZ-SHW112VHA-BS, PUHZ-SHW112YHA-BS, PUHZ-SHW140YHA-BS Service Manual

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SERVICE MANUAL

No.OCH526

REVISED EDITION-B

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R410A

December 2013

Revision:

• Added PUHZ-SHW80/112VHAR2(-BS).UK and PUHZ-SHW112/140YHAR2(-BS).UK in REVISED EDITION-B.

• Some descriptions have been modified.

PARTS CATALOG (OCB526B)

Outdoor unit [Model Name]

PUHZ-SHW80VHA

PUHZ-SHW112VHA

PUHZ-SHW112YHA

PUHZ-SHW140YHA

Salt proof model

PUHZ-SHW80VHA-BS PUHZ-SHW112VHA-BS PUHZ-SHW112YHA-BS PUHZ-SHW140YHA-BS

[Service Ref.]

PUHZ-SHW80VHA PUHZ-SHW80VHAR2.UK PUHZ-SHW112VHA PUHZ-SHW112VHAR2.UK PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW112YHAR2.UK PUHZ-SHW140YHA PUHZ-SHW140YHAR1

PUHZ-SHW140YHAR2.UK

PUHZ-SHW80VHAR2-BS.UK PUHZ-SHW112VHAR2-BS.UK PUHZ-SHW112YHAR2-BS.UK PUHZ-SHW140YHAR2-BS.UK

CONTENTS

1. TECHNICAL CHANGES ······························· 2

2. REFERENCE MANUAL ································ 2

3. SAFETY PRECAUTION ······························· 3

4. SPECIFICATIONS ········································7

5. DATA ····························································· 9

6. OUTLINES AND DIMENSIONS··················10

7. WIRING DIAGRAM ····································· 12

8. WIRING SPECIFICATIONS ························ 17

9. REFRIGERANT SYSTEM DIAGRAM ········ 18

10. TROUBLESHOOTING ································ 20

11. FUNCTION SETTING ································· 82

12.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

···· 95

13. EASY MAINTENANCE FUNCTION ········· 106

14. DISASSEMBLY PROCEDURE ················· 113

Note:

• This manual describes service data of the outdoor units only.

• RoHS compliant products have <G> mark on the spec name plate.

• Please void OCH526 REVISED EDITION-A.

INDOOR UNIT SERVICE MANUAL 2-1. FOR AIR TO WATER SYSTEM

Model name Service ref. Service manual No.

EHST20C-VM6HB EHST20C-YM9HB EHST20C-TM9HB EHST20C-VM2B EHST20C-VM6B EHST20C-YM9B EHST20C-VM6EB EHST20C-YM9EB EHST20C-VM6SB EHPT20X-VM2HB EHPT20X-VM6HB EHPT20X-YM9HB EHPT20X-TM9HB EHPT20X-VM6B EHPT20X-YM9B

EHST20C-VM6HB.UK EHST20C-YM9HB.UK EHST20C-TM9HB.UK EHST20C-VM2B.UK EHST20C-VM6B.UK EHST20C-YM9B.UK EHST20C-VM6EB.UK EHST20C-YM9EB.UK EHST20C-VM6SB.UK EHPT20X-VM2HB.UK EHPT20X-VM6HB.UK EHPT20X-YM9HB.UK EHPT20X-TM9HB.UK EHPT20X-VM6B.UK EHPT20X-YM9B.UK

OCH531

EHSC-VM2B EHSC-VM6B EHSC-YM9B EHSC-TM9B EHSC-VM6EB EHSC-YM9EB EHPX-VM2B EHPX-VM6B EHPX-YM9B ERSC-VM2B

EHSC-VM2B.UK EHSC-VM6B.UK EHSC-YM9B.UK EHSC-TM9B.UK EHSC-VM6EB.UK EHSC-YM9EB.UK EHPX-VM2B.UK EHPX-VM6B.UK EHPX-YM9B.UK ERSC-VM2B.UK

OCH532

2-2. FOR AIR TO AIR SYSTEM

Model name Service Ref. Service manual No.

PLA-RP71/125BA2 PLA-RP71/125BA2.UK

OCH412 OCB412

PLA-RP100BA3 PLA-RP100BA3

OCH459 OCB459

PLA-ZRP35/50/60/71/125BA PLA-ZRP35/50/60/71/125BA

OCH535 OCB535

PLA-ZRP100BA PLA-ZRP100BA

OCH529 OCB529

PKA-RP100KAL PKA-RP100KAL.TH

OCH452 OCB452

PKA-RP60/100FAL PKA-RP50FAL2 PKA-RP60/100FAL PKA-RP50FAL2 OC331

PKA-RP50HAL PKA-RP50HAL

OCH453 OCB453

PEAD-RP50/60/71/100/125/JA(L) PEAD-RP50/60/71/100/125/JA(L)(R1).UK

HWE08130 BWE09220 BWE09240

PEAD-RP50/60/71/100/125/JA(L)Q PEAD-RP50/60/71/100/125/JA(L)Q.UK BWE10160

REFERENCE MANUAL

TECHNICAL CHANGES

PUHZ-SHW80VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHA PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHAR1

PUHZ-SHW112YHAR2(-BS).UK

PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK

• Controller circuit board (C.B.) has been changed.

PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHA PUHZ-SHW140YHAR1

• Power circuit board (P.B.) has been changed.

OCH526B

SAFETY PRECAUTION

3-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contaminants such as sulfur, oxides, dirt, shaving particles, etc, which are hazard to refrigerant cycle. In addition, use pipes with specified thickness.

Store the piping to be used indoors during installation, and keep both ends of the piping sealed until just before brazing. (Leave elbow joints, etc. in their packaging.)

The refrigerant oil applied to flare and flange connections must be ester oil, ether oil or alkylbezene oil in a small amount.

In case of using the existing pipes for R22, be careful with the followings.

· Be sure to perform replacement operation before test run.

· Change flare nut to the one provided with this product. Use a newly flared pipe.

· Avoid using thin pipes.

Charge refrigerant from liquid phase of gas cylinder.

If the refrigerant is charged from gas phase, composition change may occur in refrigerant and the efficiency will be lowered.

Use a vacuum pump with a reverse flow check valve.

Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Handle tools with care.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigerant will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

Contamination inside refrigerant piping can cause deterioration of refrigerant oil etc.

If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

If large amount of mineral oil enters, that can cause deterioration of refrigerant oil etc.

Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

Use the specified refrigerant only.

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrigerant can cause deterioration of refrigerant oil etc.

3-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminal, all supply circuits must be disconnected.

Preparation before the repair service.

• Prepare the proper tools.

• Prepare the proper protectors.

• Provide adequate ventilation.

• After stopping the operation of the air conditioner, turn off the power-supply breaker.

• Discharge the condenser before the work involving the electric parts.

Precautions during the repair service.

• Do not perform the work involving the electric parts with wet hands.

• Do not pour water into the electric parts.

• Do not touch the refrigerant.

• Do not touch the hot or cold areas in the refrigerating cycle.

• When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution not to touch the live parts.

OCH526B

Gravimeter

Unit

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

[4] Refrigerant leakage detection function

This air conditioner can detect refrigerant leakage which may happen during a long period of use. In order to enable the leakage detection, settings are required to let the unit memorize the initial conditions (initial learning). Refer to 13-4. INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION.

[1] Cautions for service

(1) Perform service after recovering the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

No.

Tool name

Specifications

Gauge manifold

· Only for R410A

· Use the existing fitting

specifications

. (UNF1/2)

· Use high-tension side pressure of 5.3 MPa·G or over.

Charge hose

· Only for R410A

· Use pressure performance of 5.09 MPa·G or over.

Electronic scale

—

Gas leak detector · Use the detector for R134a, R407C or R410A.

Adaptor for reverse flow check · Attach on vacuum pump.

Refrigerant charge base

—

Refrigerant cylinder

· Only for R410A · Top of cylinder (Pink)

· Cylinder with syphon

Refrigerant recovery equipment

—

OCH526B

3-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES

(1) Flowchart

Connecting a new air conditioner

1 Flaring work should be done so that flare meets the dimension for R410A. Use flare nut provided with indoor and outdoor unit.

2 When using gas piping of [19.05mm for SHW112, 140. Make sure that DIP SW8-1 on outdoor unit controller board is set to ON. This is to keep

the pressure on pipes within permissible range.

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Make sure that DIP SW8-1 on outdoor unit controller board is set to ON.

This is to

prevent oil flow ratio from lowering due to the decrease in flowing refrigerant.

Ɣ8VHGLIIHUHQWGLDPHWHUMRLQWRUDGMXVWWKHSLSLQJVL]HE\EUD]LQJ 4:KHQH[LVWLQJSLSHVDUHVSHFLILHGVL]H

The pipes can be reused.

Ɣ8VHGLIIHUHQWGLDPHWHUMRLQWRUDGMXVWWKHSLSLQJVL]HE\EUD]LQJ

SHW·HA

Measure the existing pipe thickness and check for damage.

Check if existing air conditioner can operate.

Existing air conditioner can operate.

Disconnect existing air conditioner from piping.

Existing pipes can be reused.

Perform cooling operation for about 30 minutes and then do a pump down work.

Use a refrigerant recovery equipment to recover the refrigerant.

Existing air conditioner cannot operate.

The existing pipe thickness meets specifications and the pipes are not damaged.

The existing pipe thickness does not meet specifications or the pipes are damaged.

Connect a new air conditioner.

Ɣ7KHDLUFRQGLWLRQHUDXWRPDWLFDOO\SHUIRUPVFRROLQJRSHUDWLRQWKURXJKUHSODFHILOWHUIRUDERXWKRXUV

Existing pipes cannot be reused. Use new pipes.

Note:

In case existing pipes were used for gas or oil heat pump system, be sure to clean the pipes.

OCH526B

(2) Cautions for refrigerant piping work

New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.

1 Thickness of pipes

Because the working pressure of R410A is higher compared to R22, be sure to use refrigerant piping with thickness shown below. (Never use pipes of 0.7 mm or below.)

2 Dimensions of flare cutting and flare nut

The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because its working pressure is higher than that of other refrigerants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch, the dimension B changes. Use torque wrench corresponding to each dimension.

3 Tools for R410A (The following table shows whether conventional tools can be used or not.)

1/4 3/8 1/2 5/8 3/4

6.35

9.52

12.70

15.88

19.05

0.8

1.0

—

0.8

1.0

Nominal

dimensions(inch)

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

(mm)

R410A R22

1/4 3/8 1/2 5/8 3/4

6.35

9.52

12.70

15.88

19.05

9.1

13.2

16.6

19.7 —

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions(inch)

Flare cutting dimensions

Outside

diameter (mm)

Dimension A

( )

-0.4

R410A R22

1/4 3/8 1/2 5/8 3/4

6.35

9.52

12.70

15.88

19.05

17.0

22.0

26.0

29.0

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions(inch)

Flare nut dimensions

Outside

diameter (mm)

Dimension B

(mm)

R410A

* 36.0mm for indoor unit of RP100, 125 and 140

R22

(mm)

Gauge manifold Charge hose Gas leak detector

Refrigerant recovery equipment Refrigerant cylinder Applied oil

Safety charger

Charge valve

Vacuum pump

Flare tool

Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or thermistor vacuum gauge and vacuum valve Charging cylinder

Air purge, refrigerant charge and operation check Gas leak check Refrigerant recovery Refrigerant charge Apply to flared section

Prevent compressor malfunction when charging refrigerant by

spraying liquid refrigerant Prevent gas from blowing out

when detaching charge hose Vacuum drying and air purge

Flaring work of piping

Bend the pipes Cut the pipes Weld the pipes Charge refrigerant Check the degree of vacuum. (Vacuum valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Refrigerant charge

Tool exclusive for R410A Tool exclusive for R410A Tool for HFC refrigerant Tool exclusive for R410A Tool exclusive for R410A Ester oil, ether oil and alkylbenzene oil (minimum amount) Tool exclusive for R410A

Tool exclusive for R410A

Tools for other refrigerants can be used if equipped with adapter for reverse flow check Tools for other refrigerants can be used by adjusting flaring dimension Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used

Tool exclusive for R410A

Tools and materials Use R410A tools Can R22 tools be used?

(Usable if equipped with adapter for rever se flow)

(Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil, ether oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adapter for rever se flow)

(Usable by adjusting flaring dimension)

: Prepare a new tool. (Use the new tool as the tool exclusive for R410A.) : Tools for other refrigerants can be used under certain conditions. : Tools for other refrigerants can be used.

Dimension A

Dimension B

OCH526B

/min (CFM

)

dB mm (in) mm (in) mm (in)

kg (lb)

L mm (in) mm (in)

Power supply (phase, cycle, voltage) Max. current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices

Crankcase heater Heat exchanger Fan Fan(drive) o No. Fan motor output Airflow Defrost method Noise level

Dimensions

Weight Refrigerant

Charge

Oil (Model) Pipe size O.D.

Connection method Between the indoor &

outdoor unit

Cooling Heating

W D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

Service Ref.

PUHZ-SHW112VHA

Munsell 3Y 7.8/1.1

Linear Expansion Valve

Hermetic

ANB33FJMMT

Inverter

—

Plate fin coil

Propeller fan o 2

0.074+0.074 100 (3,530)

Reverse cycle

950 (37-3/8)

330+30 (13+1-3/16)

1,350 (53-1/8)

120 (265)

R410A

5.5 (12.1)

1.40 (FV50S)

9.52 (3/8)

15.88 (5/8) Flared Flared

Max. 30 m Max. 75 m

HP switch, LP switch

Discharge thermo, Comp. surface thermo

Single 50 Hz, 230V

OUTDOOR UNIT

REFRIGERANT PIPING

2.5

PUHZ-SHW80VHA

29.5 35

50 51

51 52

/min (CFM

)

dB mm (in) mm (in) mm (in)

kg (lb)

kg (lbs)

L mm (in) mm (in)

Power supply (phase, cycle, voltage) Max. current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices

Crankcase heater Heat exchanger Fan Fan(drive) o No. Fan motor output Airflow Defrost method Noise level

Dimensions

Weight Refrigerant

Charge

Oil (Model) Pipe size O.D.

Connection method Between the indoor &

outdoor unit

Cooling Heating

D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

Service Ref.

PUHZ-SHW112YHA PUHZ-SHW140YHA

PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1

Munsell 3Y 7.8/1.1

Linear Expansion Valve

Hermetic

ANB33FJLMT

2.5

Inverter

—

Plate fin coil

Propeller fan o 2

0.074+0.074 100 (3,530)

Reverse cycle

950 (37-3/8)

330+30 (13+1-3/16)

1,350 (53-1/8)

134 (295)

R410A

5.5 (12.1)

1.40 (FV50S)

9.52 (3/8)

15.88 (5/8) Flared Flared

Max. 30 m Max. 75 m

3phase, 50 Hz, 400V

OUTDOOR UNIT

REFRIGERANT PIPING

51 52

HP switch, LP switch

Discharge thermo, Comp. surface thermo

SPECIFICATIONS

OCH526B

/min (CFM

)

dB mm (in) mm (in) mm (in)

kg (lb)

L mm (in) mm (in)

Power supply (phase, cycle, voltage) Max. current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices

Crankcase heater Heat exchanger Fan Fan(drive) o No. Fan motor output Airflow Defrost method Noise level

Dimensions

Weight Refrigerant

Charge

Oil (Model) Pipe size O.D.

Connection method Between the indoor &

outdoor unit

Cooling Heating

D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

Service Ref.

PUHZ-SHW112VHAR2(-BS).UK

Munsell 3Y 7.8/1.1

Linear Expansion Valve

Hermetic

ANB33FJRMT

Inverter

—

Plate fin coil

Propeller fan o 2

0.074+0.074 100 (3,530)

Reverse cycle

950 (37-3/8)

330+30 (13+1-3/16)

1,350 (53-1/8)

120 (265)

R410A

5.5 (12.1)

1.40 (FVC68D)

9.52 (3/8)

15.88 (5/8) Flared Flared

Max. 30 m Max. 75 m

HP switch, LP switch

Discharge thermo, Comp. surface thermo

Single 50 Hz, 230V

OUTDOOR UNIT

REFRIGERANT PIPING

2.5

PUHZ-SHW80VHAR2(-BS).UK

29.5 35

50 51

51 52

/min (CFM

)

dB mm (in) mm (in) mm (in)

kg (lb)

L mm (in) mm (in)

Power supply (phase, cycle, voltage) Max. current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices

Crankcase heater Heat exchanger Fan Fan(drive) o No. Fan motor output Airflow Defrost method Noise level

Dimensions

Weight Refrigerant

Charge

Oil (Model) Pipe size O.D.

Connection method Between the indoor &

outdoor unit

Cooling

Heating

D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

Service Ref.

PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

Munsell 3Y 7.8/1.1

Linear Expansion Valve

Hermetic

ANB33FJQMT

2.5

Inverter

—

Plate fin coil

Propeller fan o 2

0.074+0.074 100(3,530)

Reverse cycle

950(37-3/8)

330+30(13+1-3/16)

1,350(53-1/8)

134(295)

R410A

5.5(12.1)

1.40(FVC68D)

9.52(3/8)

15.88(5/8) Flared Flared

Max. 30 m Max. 75 m

3phase, 50Hz, 400V

OUTDOOR UNIT

REFRIGERANT PIPING

51 52

HP switch, LP switch

Discharge thermo, Comp. surface thermo

OCH526B

DATA

5-1. REFILLING REFRIGERANT CHARGE (R410A: kg)

5-2. COMPRESSOR TECHNICAL DATA

Piping length (one way)

10 m

20 m

30 m

40 m

50 m

Factory charged

5.1

5.3

5.5

6.1

6.7

60 m

7.3

75 m

7.9

5.5

Service Ref.

PUHZ-SHW80VHA PUHZ-SHW80VHAR2(-BS).UK

PUHZ-SHW112VHA PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHAR2(-BS).UK

PUHZ-SHW140YHA PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK

U-V

U-W

W-V

Service Ref.

Compressor model

Winding

Resistance

( " )

ANB33FJLMT ANB33FJRMT ANB33FJQMT

(at 20:)

0.302

0.188

0.305

ANB33FJMMT

0.188

PUHZ-SHW80VHA PUHZ-SHW112VHA

PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK

PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1

Additional charge is required for pipes longer than 10 m.

5-3. NOISE CRITERION CURVES

PUHZ-SHW80VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW112YHAR2(-BS).UK

PUHZ-SHW112VHA PUHZ-SHW112VHA2(-BS).UK PUHZ-SHW140YHA PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).U

1.5m

MICROPHONE

UNIT

GROUND

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 μbar)

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

BAND CENTER FREQUENCIES, Hz

COOLING

MODE

HEATING

SPL(dB)

LINE

OCH526B

OUTLINES AND DIMENSIONS

PUHZ-SHW80VHA PUHZ-SHW112VHA PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1

Unit: mm

Handle for moving

Side Air Intake

Front piping cover

Rear piping cover

Air intake

Rear Air Intake

Handle for moving

Air Discharge

Rear Air Intake

Side Air Intake

···Refrigerant GAS pipe connection (FLARE) 15.88(5/8 inch)

···Refrigerant LIQUID pipe connection (FLARE)

9.52(3/8 inch)

1 ···Indication of STOP VALVE connection location.

Example of Notes

Piping Knockout Hole Details

600175

175

330

417

53 56

(19)28 370

2-U Shaped notched holes

(Foundation Bolt M10)

2-12 x 36 Oval holes

(Foundation Bolt M10)

Installation Feet

27 55

23 73 63

Rear piping hole

(Knockout)

Rear trunking hole

(Knockout)

Power supply wiring hole

(2-

27Knockout)

19 55

75 40

73 63 23 27 92

Right piping hole

(Knockout)

Right trunking hole

(Knockout)

Power supply wiring hole

(2-

27Knockout)

27 55

73 63

Front piping hole

(Knockout)

Front trunking hole

(Knockout)

Power supply wiring hole

(2-

27Knockout)

14514522030 145

81 219

Bottom piping hole

(Knockout)

Drain hole

(5-

33)

SHW·VHA

SHW·YHA

1,079

930

Over

Less than

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS

2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Please secure the unit firmly

with 4 foundation (M10) bolts.

(Bolts and washers must be

purchased locally.)

Dimensions of space needed

for service access are

shown in the below diagram.

The diagram below shows a

basic example.

Explanation of particular details is

given in the installation manuals etc.

FOUNDATION

500

150

Service space

Handle for moving

Service panel

+1 443

+1 447

635

371

1350

322

950

Handle for moving

Handle

for

moving

Earth terminal

Terminal connection

Left ····Power supply wiring

Right··· Indoor/Outdoor wiring

Over 10mm

Over 150mm

Over 1000mm

FREE

OCH526B

PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

Unit: mm

Handle for moving

Side Air Intake

Front piping cover

Rear piping cover

Air intake

Rear Air Intake

Handle for moving

Air Discharge

Rear Air Intake

Side Air Intake

1····Refrigerant GAS pipe connection (FLARE){15.88(5/8 inch)

2····Refrigerant LIQUID pipe connection (FLARE){ 9.52(3/8 inch)

*1 ···Indication of STOP VALVE connection location.

Example of Notes

Piping Knockout Hole Details

600175 175

330

417

42 66

53 56

(19)28 370

2-U Shaped notched holes

(Foundation Bolt M10)

2-12 x 36 Oval holes

(Foundation Bolt M10)

Installation Feet

45 40

27 55

23 73 63

Rear piping hole

(Knockout)

Rear trunking hole

(Knockout)

Power supply wiring hole

(2-

{

27Knockout)

{

19 55

75 40

73 63 23 27 92

Right piping hole

(Knockout)

Right trunking hole

(Knockout)

Power supply wiring hole

(2-

{

27Knockout)

{

4540

27 55

23 73 63

Front piping hole

(Knockout)

Front trunking hole

(Knockout)

Power supply wiring hole

(2-

{

27Knockout)

{

14514522030 145

81 219

Bottom piping hole

(Knockout)

Drain hole

(5-{33)

VHA

YHA

1,079

930

Handle for moving Earth terminal

Terminal connection

Left・・・Power supply wiring

Right・・Indoor/Outdoor wiring

Handle for moving

Service panel

*1 431

1350

635371

322

950

*1447

(

)

Over

Less than

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS

2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Please secure the unit firmly

with 4 foundation (M10) bolts.

(Bolts and washers must be

purchased locally.)

Dimensions of space needed

for service access are

shown in the below diagram.

The diagram below shows a

basic example.

Explanation of particular details is

given in the installation manuals etc.

FOUNDATION

500

150

Service space

Over 10mm

Over 150mm

Over 1000mm

FREE

OCH526B

PUHZ-SHW80VHA PUHZ-SHW112VHA

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M

Terminal Block<M-NET connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication>

POWER SUPPLY ~/N 230V 50Hz

INDOOR UNIT

CN5

(WHT)

TB7

CND

(WHT)

CN2M (WHT)

M-NET

ABS

When M-NET adapter is connected

M-NET ADAPTER

LEV-C (BLU)

TH33 Thermistor<Ref. check>

TH32 Thermistor<Suction>

SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 MC MF1, MF2 21S4 63H 63L 63HS TH3 TH4 TH6 TH7 TH8

TH34 LEV-A, LEV-B, LEV-C

DCL CB CY1, CY2

Terminal Block<Power Supply, Indoor/Outdoor

> Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Low Pressure Switch High Pressure Sensor Thermistor<Liquid> Thermistor<Discharge> Thermistor<2-Phase Pipe> Thermistor<Ambient> Thermistor (internal) <Heat Sink>

Thermistor<Comp. Surface> Linear Expansion Valve

Reactor Main Smoothing Capacitor Capacitor

P. B. Power Circuit Board

Connection Terminal<U/V/W-Phase> Connection Terminal<L-Phase> Connection Terminal<N-Phase> Connection Terminal Connection Terminal Connection Terminal<Reactor> Power Module Connection Terminal<Ground> 52C Relay Controller Circuit Board Switch<Manual Defrost, Defect History, Record Reset, Refrigerant Address

SW7 SW8 SW9 SWP CN31 CNDM CN51 SV1/CH SS CNM LED1, LED2 F1, F2, F3, F4 X51, X52, X54

Switch<Function Switch> Switch<Function Switch> Switch<Function Switch> Switch<Pump Down> Connector<Emergency Operation> Connector<Connection for Option> Connector<Connection for Option> Connector<Connection for Option> Connector<Connection for Option> Connector<Connection for Option> LED<Operation Inspection Indicators> Fuse<T6.3AL250V> Relay

U, V, W LI NI P2 N2 DCL1, DCL2 IGBT EI, E2, E3, E4 52C

C. B.

SW1

Switch<Test Operation> Switch<Function Switch, Model Select

Switch<Model Select>

SW4 SW5 SW6

P. B.

DCL

L N S1 S2 S3

TB1

RED

WHT

BLK

CN2

(WHT)

CN4

(WHT)

RED

BLU

YLW

ORN

BRN

WHT

RED

GRN/YLW

BLK

(RED)

CNAC2

(WHT)

CNAC1

LINI

CN52C

(RED)

52C

DCL1

DCL2

UVW

CNDC (PNK)

BLK

MS 3~

BLK

CY1 CY2

IGBT

RE D WHT

C. B.

TH6TH7 TH4TH3

21S4

t° t° t° t°

LEV-A

CNS

(WHT)

CNAC

(WHT)

CNDC (PNK)

21S4

(GRN)

CN2

(WHT)

CN4

(WHT)

TH7/6 (RED)

TH3

(WHT)

TH4

(WHT)

TRANS

CNVMNT

(WHT)

CNMNT

(WHT)

CNM

(WHT)

LED1

LED2

X52

SV1

/CH

(GRY)

X54

63H

(YLW)

141221

311 5

114

31 31

LEV-A (WHT)

(WHT)

X51

MS 3~

MF1

63L63H

63L

(RED)

TH34

t°

21 TH34 (RED)

63HS

(WHT)

TH32 (BLK)

TH33

(YLW)

63HS

LEV-B

(RED)

LEV-B

MF2

CNF2 (WHT)

CNF1 (WHT)

CN52C

(RED)

t°

TH8

CN3S

(WHT)

CNDM

(WHT)

CN51

(WHT)

3 1

TH32

t°

TH33

t°

MS 3~

SW7

SW6SW1

SW9

CN31

SW5SW8SW4 SWP

12345678

OFF

80V

MODEL

SW6 SW5-6 *2

OFF

112V

OFF

123456

*1 MODEL SELECT

The black square ( ) indicates a switch position.

*2 SW5 -1 to 5 : Function Switch

*3 Ambient temp. of ZUBADAN Flash Injection becomes effective.

The black square ( ) indicates a switch position.

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

*4 SW9-1 to 2 : Function Switch

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

3°C or less

(lnitial setting)

0°C or less

–3°C or less

–6°C or less

*1 *1

LEV-C

WIRING DIAGRAM

OCH526B

PUHZ-SHW112YHA PUHZ-SHW140YHA

TB1 TB2 MC MF1, MF2 21S4 63H 63L 63HS TH3 TH4 TH6 TH7 TH8

TH34

ACL1, ACL2, ACL3, ACL4 CY1, CY2

CK RS

Terminal Block<Power Supply> Terminal Block<Indoor/Outdoor> Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Low Pressure Switch High Pressure Sensor Thermistor<Liquid> Thermistor<Discharge> Thermistor<2-Phase Pipe> Thermistor<Ambient> Thermistor<Heat Sink>

Thermistor<Comp. Surface> Linear Expansion Valve Reactor Capacitor

Capacitor Rush Current Protect Resistor

Power Circuit Board Connection Terminal<U/V/W-Phase

P. B .

TB-U/V/W

Noise Filter Circuit Board Connection Terminal

<L1/L2/L3/N-Power Supply

N. F.

LI1, LI2. LI3, NI

Connection Terminal

<L1/L2/L3/N-Power Supply

LO1, LO2, LO3, NO

Converter Circuit Board

CONV. B.

Connection Terminal<Ground>

GD1, GD3

Connection Terminal<L1-Power Supply

>L1-A1/IN

Connection Terminal<L1-Power Supply

>L1-A2/OU

Connection Terminal<L2-Power Supply

>L2-A2/OU

Connection Terminal<L3-Power Supply

>L3-A2/OU

Connection Terminal

N-IN

Connection Terminal

CK-OU

SYMBOL NAME SYMBOL NAME SYMBOL NAME

Connection Terminal

<L1/L2/L3-Power Supply

TB-L1/L2/L3

SW4 SW5 SW6 SW7 SW8 SW9 SWP CN31 CNDM CN51 SV1/CH SS CNM LED1, LED2 F1, F2, F3, F4 X51, X52, X54

SW1

C. B.

Connection Terminal

TB-N

52C Relay

X52CA

Switch<Manual Defrost, Defect History, Record Reset, Refrigerant Address

Switch<Test Operation

Switch<Function Switch, Model Select

Switch<Model Select

Switch<Function Switch

Switch<Pump Down

Connector<Emergency Operation

Connector<Connection for Option

LED<Operation Inspection Indicators

FUSE<T6.3AL250V

Relay

Controller Circuit Board

TH33 Thermistor<Ref. check>

TH32 Thermistor<Suction>

LEV-A, LEV-B, LEV-C

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M

Terminal Block<M-NET connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication>

P. B .

POWER SUPPLY 3N~ 400V 50Hz

TB1

RED

WHT

BLK

N. F.

CNAC1 (WHT)

CNDC (PNK)

CNL

(BLU)

CNAC2

(RED)

CNCT (RED)

LO1

LO2

LO3

GD1

LI1

LI2

LI3

GD3

ACL4

ACL3

ACL2

ACL1

RED

WHT

BLK

BLU

RED

WHT

BLK

BLU

TB2

CN7

(WHT)

L3-OU

L3- A2

L2-OU

L2- A2

L1-OU

L1- A2

L1-A1

L1-IN

N-IN

CK-OU

X52CA

RED

BLK

BLU

RED

BLK

WHT

RED

WHT

BLK

YLW

ORN

BRN

BLK

RED

GRN/YLW

BLK

CONV. B.

WHT

INDOOR

UNIT

C. B.

TH6TH7

TH4TH3

21S4

t° t° t° t°

LEV-A

CNS

(WHT)

CNAC (WHT)

CNDC (PNK)

21S4

(GRN)

CN2

(WHT)

CN4

(WHT)

TH7/6

(RED)

TH3 (WHT)

TH4

(WHT)

TRANS

CNM

(WHT)

LED1

LED2

X52

SV1 /CH

(GRY)

X54

63H

(YLW)

141221

114

31 31

LEV-A (WHT)

(WHT)

X51

MS 3~

MF1

CNF1 (WHT)

63L63H

63L

(RED)

TH34

t°

21 TH34 (RED)

63HS

(WHT)

63HS

LEV-B (RED)

LEV-B

MF2

CNF2 (WHT)

CN7

(WHT)

1312

CN6

(WHT)

CN5

(RED)

CN2

(WHT)

1712

CN4

(WHT)

TB-N

TB-U

TB-V

TB-W

TB-L3

TB-L2

TB-L1

TH8

t°

RED

MS 3~

CN3S

(WHT)

CNDM

(WHT)

CN51

(WHT)

3 1

MS 3~

BRN

CY1

CY2

SW7

SW6SW1

SW9

CN31

SW5SW8SW4 SWP

TH32

(BLK)

TH33

(YLW)

TH32

t°

TH33

t°

12345678

OFF

112Y

MODEL

SW6

SW5-6 *2

OFF

140Y

OFF

123456

MODEL

SW6

*1 MODEL SELECT

The black square( )indicates a switch position.

SW5 -1 to 5 : Function Switch

*3 Ambient temp. of ZUBADAN Flash Injection becomes effective.

The black square( )indicates a switch position.

*4 SW9-1 to 2 : Function Switch

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

3°C or less

(lnitial setting)

0°C or less

SW9-3,4 *4

Ambient temp.

SW9-3,4 *4

Ambient temp.

–3°C or less

–6°C or less

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

*1 *1

CNVMNT

(WHT)

CNMNT

(WHT)

311 5

CN5

(WHT)

TB7

CND

(WHT)

CN2M

(WHT)

M-NET

ABS

When M-NET adapter is connected

M-NET ADAPTER

LEV-C

(BLU

)

LEV-C

OCH526B

PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1

TB1 TB2 MC MF1, MF2 21S4 63H 63L 63HS TH3 TH4 TH6 TH7 TH8

TH34

ACL1, ACL2, ACL3, ACL4 CY1, CY2

CK RS

Terminal Block <Power Supply> Terminal Block <Indoor/Outdoor> Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Low Pressure Switch High Pressure Sensor Thermistor <Liquid> Thermistor <Discharge> Thermistor <2-Phase Pipe> Thermistor <Ambient> Thermistor <Heat Sink>

Thermistor <Comp. Surface> Linear Expansion Valve Reactor Capacitor

Capacitor Rush Current Protect Resistor

Power Circuit Board <L1/L2/L3-Power Supply

Connection Terminal <U/V/W-Phase

P. B.

TB-U/V/W

Noise Filter Circuit Board Connection Terminal

L1/L2/L3/N-Power Supply

N. F.

LI1, LI2. LI3, NI

Connection Terminal <L1/L2/L3/N-Power Supply

LO1, LO2, LO3, NO

Converter Circuit Board

CONV. B.

Connection Terminal <Ground

>GD1, GD3

Connection Terminal <L1-Power Supply

>L1-A1/IN

Connection Terminal <L1-Power Supply

>L1-A2/OU

Connection Terminal <L2-Power Supply

>L2-A2/OU

Connection Terminal <L3-Power Supply

>L3-A2/OU

Connection Terminal

N-IN

Connection Terminal

CK-OU

SYMBOL NAME SYMBOL NAME SYMBOL NAME

Connection Terminal

TB-L1/L2/L3

SW4 SW5 SW6 SW7 SW8 SW9 SWP CN31 CNDM CN51 SV1/CH SS CNM LED1, LED2 F1, F2, F3, F4 X51, X52, X54

SW1

C. B.

Connection Terminal

TB-N

52C Relay

X52CA/B

Switch <Manual Defrost, Defect History, Record Reset, Refrigerant Address

Switch <Test Operation

Switch <Function Switch, Model Select

Switch <Model Select

Switch <Function Switch

Switch <Pump Down

Connector <Emergency Operation

Connector <Connection for Option

LED <Operation Inspection Indicators

FUSE <T6.3AL250V

Relay

Controller Circuit Board

TH33 Thermistor <Ref. check>

TH32 Thermistor <Suction>

LEV-A, LEV-B, LEV-C

SYMBOL

M-NET ADAPTER

NAME

TB7 CN5 CND CN2M

Terminal Block <M-NET connection> Connector <Transmission> Connector <Power Supply> Connector <M-NET communication>

P. B .

POWER SUPPLY 3N~ 400V 50Hz

TB1

RED

WHT

BLK

N. F.

CNAC1

(WHT)

CNDC (PNK)

CNL

(BLU)

CNAC2

(RED)

CNCT (RED)

LO1

LO2

LO3

GD1

LI1

LI2

LI3

GD3

ACL4

ACL3

ACL2

ACL1

RED

WHT

BLK

BLU

RED

WHT

BLK

BLU

TB2

CN7

(WHT)

L3-OU

L3- A2

L2-OU

L2- A2

L1-OU

L1- A2

L1-A1

L1-IN

N-IN

CK-OU

X52CA

X52CB

RED

BLK

BLU

RED

BLK

WHT

RED

WHT

BLK BLK

YLW

ORN

BRN

BLK

GRN/YLW

BLK

CONV. B.

WHT

INDOOR

UNIT

C. B.

TH6TH7

TH4TH3

21S4

LEV-A

CNS

(WHT)

CNAC (WHT)

CNDC

(PNK)

21S4

(GRN)

CN2

(WHT)

CN4

(WHT)

TH7/6 (RED)

TH3

(WHT)

TH4

(WHT)

TRANS

CNM

(WHT)

LED1

LED2

X52

SV1 /CH

(GRY)

X54

63H

(YLW)

141221

114

31 31

LEV-A (WHT)

(WHT)

X51

MS 3~

MF1

CNF1 (WHT)

63L63H

63L

(RED)

TH34

21 TH34

(RED)

63HS

(WHT)

63HS

LEV-B (RED)

LEV-B

MF2

CNF2

(WHT)

CN7

(WHT)

1312

CN6

(WHT)

CN5

(RED)

CN2

(WHT)

1712

CN4

(WHT)

TB-N

TB-U

TB-V

TB-W

TB-L3

TB-L1

L3OUT

TB-L2

L3IN

TH8

CN3S

(WHT)

CNDM

(WHT)

CN51

(WHT)

3 1

BRN

CY1

CY2

SW7

SW6SW1

SW9

CN31

SW5SW8SW4 SWP

t°

TH32

(BLK)

TH33

(YLW)

TH32

TH33

t° t° t° t° t° t° t°

12345678

OFF

112Y

MODEL

SW6

SW5-6

OFF

140Y

OFF

123456

MODEL

SW6

1 MODEL SELECT

The black square ( ) indicates a switch position.

SW5 -1 to 5 : Function Switch

3 Ambient temp. of ZUBADAN Flash Injection becomes effective.

The black square ( ) indicates a switch position.

4 SW9-1 to 2 : Function Switch

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

3°C or less

(lnitial setting)

0°C or less

SW9-3,4 *4

Ambient temp.

SW9-3,4 *4

Ambient temp.

-3°C or less

-6°C or less

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

*1*

CNVMNT

(WHT)

CNMNT

(WHT)

311 5

CN5

(WHT)

TB7

CND

(WHT)

CN2M (WHT)

M-NET

ABS

When M-NET adapter is connected

M-NET ADAPTER

LEV-C

(BLU)

LEV-C

OCH526B

PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M

Terminal Block <M-NET connection> Connector <Transmission> Connector <Power Supply> Connector <M-NET communication>

POWER SUPPLY ~/N 230V 50Hz

INDOOR UNIT

CN5

(WHT)

TB7

CND

(WHT)

CN2M (WHT)

M-NET

A B S

When M-NET adapter is connected

M-NET ADAPTER

LEV-C

TH33 Thermistor <Ref. check>

TH32 Thermistor <Suction>

SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 MC MF1, MF2 21S4 63H 63L 63HS TH3 TH4 TH6 TH7 TH8

TH34 LEV-A, LEV-B, LEV-C

DCL CB CY1, CY2

Terminal Block <Power Supply, Indoor/Outdoor

> Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Low Pressure Switch High Pressure Sensor Thermistor <Liquid> Thermistor <Discharge> Thermistor <2-Phase Pipe> Thermistor <Ambient> Thermistor (internal) <Heat Sink>

Thermistor <Comp. Surface> Linear Expansion Valve

Reactor Main Smoothing Capacitor Capacitor

P. B. Power Circuit Board

Connection T erminal <U/V/W-Phase> Connection T erminal <L-Phase> Connection T erminal <N-Phase> Connection T erminal Connection T erminal Connection T erminal <Reactor> Power Module Connection T erminal <Ground> 52C Relay Controller Circuit Board Switch <Manual Defrost, Defect History, Record Reset, Refrigerant Address

SW7 SW8 SW9 SWP CN31 CNDM CN51 SV1/CH SS CNM LED1, LED2 F1, F2, F3, F4 X51, X52, X54

Switch <Function Switch> Switch <Function Switch> Switch <Function Switch> Switch <Pump Down> Connector <Emergency Operation> Connector <Connection for Option> Connector <Connection for Option> Connector <Connection for Option> Connector <Connection for Option> Connector <Connection for Option> LED <Operation Inspection Indicators> Fuse <T6.3AL250V> Relay

U, V, W LI NI P2 N2 DCL1, DCL2 IGBT EI, E2, E3, E4 52C

C. B.

SW1

Switch <Test Operation> Switch <Function Switch, Model Select

Switch <Model Select>

SW4 SW5 SW6

P. B.

DCL

L N S1 S2 S3

TB1

RED

WHT

BLK

CN2

(WHT)

CN4

(WHT)

RED

BLU

YLW

ORN

BRN

WHT

RED

GRN/YLW

BLK

(RED)

CNAC2

(WHT)

CNAC1

LINI

CN52C

(RED)

1 3

52C

DCL1

DCL2

UVW

CNDC (PNK)

BLK

CY1 CY2

IGBT

RE D

WHT

C. B.

TH6TH7 TH4TH3

21S4

t° t° t° t°

LEV-A

CNS

(WHT)

CNAC

(WHT)

CNDC (PNK)

21S4

(GRN)

CN2

(WHT)

CN4

(WHT)

TH7/6 (RED)

TH3

(WHT)

TH4

(WHT)

TRANS

CNVMNT

(WHT)

CNMNT

(WHT)

CNM

(WHT)

LED1

LED2

X52

SV1 /CH

(GRY)

X54

63H

(YLW)

141221

311 5

114

3 1

31 31

LEV-A (WHT)

(WHT)

X51

MS 3~

MF1

63L63H

63L

(RED)

TH34

t°

21 TH34 (RED)

63HS

(WHT)

TH32

(BLK)

TH33

(YLW)

63HS

LEV-B (RED)

LEV-B

MF2

CNF2 (WHT)

CNF1 (WHT)

CN52C

(RED)

t°

TH8

CN3S

(WHT)

1 3

CNDM

(WHT)

CN51

(WHT)

1 3

TH32

t°

TH33

t°

MS 3~

SW7

SW6SW1

SW9

CN31

SW5SW8SW4 SWP

12345678

OFF

80V

MODEL

SW6 SW5-6 *2

OFF

112V

OFF

123456

*1 MODEL SELECT

The black square ( ) indicates a switch position.

*2 SW5 -1 to 5 : Function Switch

*3 Ambient temp. of ZUBADAN Flash Injection becomes effective.

The black square ( ) indicates a switch position.

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

*4 SW9-1 to 2 : Function Switch

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

3: or less

(lnitial setting)

0: or less

-3: or less

-6: or less

*1*

LEV-C

(BLU)

OCH526B

PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M

Terminal Block <M-NET connection> Connector <Transmission> Connector <Power Supply> Connector <M-NET communication>

*3 Ambient temp. of ZUBADAN Flash Injection becomes effective.

The black square ( ) indicates a switch position.

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

*4 SW9-1 to 2 : Function Switch

1234

OFF

1234

OFF

SW9-3,4 *4

Ambient temp.

3: or less

(lnitial setting)

0: or less

-3: or less

-6: or less

TB1 TB2 MC MF1, MF2 21S4 63H 63L 63HS TH3 TH4 TH6 TH7 TH8

TH34 ACL1, ACL2, ACL3, ACL4

CY1, CY2

CK RS

Terminal Block 〈Power Supply〉 Terminal Block 〈Indoor/Outdoor〉 Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Low Pressure Switch High Pressure Sensor Thermistor 〈Liquid〉 Thermistor 〈Discharge〉 Thermistor 〈2-Phase Pipe〉 Thermistor 〈Ambient〉 Thermistor 〈Heat Sink〉

Thermistor 〈Comp. Surface〉 Linear Expansion Valve Reactor Capacitor

Capacitor Rush Current Protect Resistor

Power Circuit Board 〈L1/L2/L3-Power Supply

〉

Connection Terminal 〈U/V/W-Phase

〉

P. B .

TB-U/V/W

Noise Filter Circuit Board Connection Terminal

〈

L1/L2/L3/N-Power Supply

〉

N. F.

LI1, LI2. LI3, NI

Connection Terminal 〈L1/L2/L3/N-Power Supply

〉

LO1, LO2, LO3, NO

Converter Circuit Board

CONV. B.

Connection Terminal 〈Ground

〉GD1, GD3

Connection Terminal 〈L1-Power Supply

〉L1-A1/IN

Connection Terminal 〈L1-Power Supply

〉L1-A2/OU

Connection Terminal 〈L2-Power Supply

〉L2-A2/OU

Connection Terminal 〈L3-Power Supply

〉L3-A2/OU

Connection Terminal

N-IN

Connection Terminal

CK-OU

SYMBOL NAME SYMBOL NAME SYMBOL NAME

Connection Terminal

TB-L1/L2/L3

SW4 SW5 SW6 SW7 SW8 SW9 SWP CN31 CNDM CN51 SV1/CH SS CNM LED1, LED2 F1, F2, F3, F4 X51, X52, X54

SW1

C. B.

Connection Terminal

TB-N

52C Relay

X52CA/B

Switch 〈Manual Defrost, Defect History, Record Reset, Refrigerant Address

〉

Switch 〈Test Operation

〉

Switch 〈Function Switch, Model Select

〉

Switch 〈Model Select

〉

Switch 〈Function Switch

〉

Switch 〈Function Switch

〉

Switch 〈Function Switch

〉

Switch 〈Pump Down

〉

Connector 〈Emergency Operation

〉

Connector 〈Connection for Option

〉

Connector 〈Connection for Option

〉

Connector 〈Connection for Option

〉

Connector 〈Connection for Option

〉

Connector 〈Connection for Option

〉

LED 〈Operation Inspection Indicators

〉

FUSE 〈T6.3AL250V

〉

Relay

Controller Circuit Board

TH33 Thermistor 〈Ref. check〉

TH32 Thermistor 〈Suction〉

LEV-A, LEV-B, LEV-C

P. B.

POWER SUPPLY 3N~ 400V 50Hz

TB1

RED

WHT

BLK

L1 L2 L3

N. F.

CNAC1

(WHT)

CNDC (PNK)

CNL

(BLU)

CNAC2

(RED)

CNCT (RED)

LO1

LO2

LO3

GD1

LI1

LI2

LI3

GD3

S1 S2 S3

ACL4

ACL3

ACL2

ACL1

RED

WHT

BLK

BLU

RED

WHT

BLK

BLU

TB2

CN7

(WHT)

3 1

L3-OU

L3-A2

L2-OU

L2-A2

L1-OU

L1-A2

L1-A1

L1-IN

N-IN

CK-OU

X52CA

X52CB

RED

BLK

BLU

RED

BLK

WHT

RED

WHT

BLK BLK

YLW

ORN

BRN

BLK

GRN/YLW

BLK

CONV. B.

WHT

INDOOR

UNIT

C. B.

TH6TH7

TH4TH3

21S4

t° t° t° t°

LEV-A

CNS

(WHT)

CNAC

(WHT)

CNDC

(PNK)

21S4

(GRN)

CN2

(WHT)

CN4

(WHT)

TH7/6 (RED)

TH3

(WHT)

TH4

(WHT)

TRANS

CNM

(WHT)

LED1

LED2

X52

SV1

/CH

(GRY)

X54

63H

(YLW)

141221

114

3 1

31 31

LEV-A (WHT)

(WHT)

X51

MF1

CNF1

(WHT)

63L63H

63L

(RED)

TH34

t°

21 TH34 (RED)

63HS

(WHT)

63HS

LEV-B (RED)

LEV-B

MF2

CNF2 (WHT)

CN7

(WHT)

1312

CN6

(WHT)

CN5

(RED)

CN2

(WHT)

1712

CN4

(WHT)

TB-N

TB-U

TB-V

TB-W

TB-L3

TB-L1

L3OUT

TB-L2

L3IN

TH8

t°

CN3S

(WHT)

1 3

CNDM

(WHT)

CN51

(WHT)

1 3

BRN

CY1

CY2

SW7

SW6SW1

SW9

CN31

SW5SW8SW4 SWP

TH32

(BLK)

TH33

(YLW)

TH32

t°

TH33

t°

*1*

CNVMNT

(WHT)

CNMNT

(WHT)

311 5

CN5

（WHT）

TB7

CND

（WHT）

CN2M

（WHT）

M-NET

ABS

When M-NET adapter is connected

M-NET ADAPTER

LEV-C

（

BLU

）

LEV-C

12345678

OFF

112Y

MODEL

SW6 SW5-6 *2

OFF

140Y

OFF

123456

*1 MODEL SELECT

The black square ( ) indicates a switch position.

*2 SW5 -1 to 5 : Function Switch

OCH526B

WIRING SPECIFICATIONS

FIELD ELECTRICAL WIRING (power wiring specifications)

Outdoor unit model

SHW80V SHW112V SHW112, 140Y

Outdoor unit power supply

~/N (single),

50 Hz, 230 V

~/N (single),

50 Hz, 230 V

3N~ (3 ph 4-wires),

50 Hz, 400 V

Outdoor unit input capacity Main switch (Breaker) *1 32 A 40 A 16 A

Wiring

Wire No. ×

size (mm

)

Outdoor unit power supply 3 × Min. 4 3 × Min. 6 5 × Min. 1.5

Indoor unit-Outdoor unit *2 3 × 1.5 (Polar) 3 × 1.5 (Polar) 3 × 1.5 (Polar)

Indoor unit-Outdoor unit earth *2 1 × Min. 1.5 1 × Min. 1.5 1 × Min. 1.5

Remote controller-Indoor unit *3 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar) 2 × 0.3 (Non-polar)

Circuit rating

Outdoor unit L-N (single) Outdoor unit L1-N, L2-N, L3-N (3 phase)

*4 AC 230 V AC 230 V AC 230 V

Indoor unit-Outdoor unit S1-S2 *4 AC 230 V AC 230 V AC 230 V

Indoor unit-Outdoor unit S2-S3 *4 DC 24 V DC 24 V DC 24 V

Remote controller-Indoor unit *4 DC 12 V DC 12 V DC 12 V

*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV).

Make sure that the current leakage breaker is one compatible with higher harmonics. Always use a current leakage breaker that is compatible with higher harmonics as this unit is equipped with an inverter. The use of an inadequate breaker can cause the incorrect operation of inverter.

*2. (SHW80 - 140)

Max. 45 m If 2.5 mm² used, Max. 50 m

If 2.5 mm² used and S3 separated, Max. 80 m *3. The 10 m wire is attached in the remote controller accessory. *4. The ﬁ gures are NOT always against the ground.

S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device.

Warning:

· In case of A-control wiring, there is high voltage potential on the S3 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line. Therefore, please turn off the main power supply when servicing. And do not touch the S1, S2, S3 terminals when the power is energized. If isolator should be used between indoor unit and outdoor unit, please use 3-pole type.

Notes: 1. Wiring size must comply with the applicable local and national codes.

Power supply cables and the cables between Interface unit/Flow temp. controller and outdoor unit shall not be lighter than polychloroprene

sheathed ﬂ exible cables. (Design 60245 IEC 57

)

3. Be sure to connect the cables between

Interface unit/Flow temp. controller

and outdoor unit directly to the units (no intermediate connections

are allowed). Intermediate connections may result in communication errors. If water enters at the intermediate connection point, it may cause insufﬁ cient insulation to ground or a poor electrical contact . (If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)

4. Install an earth longer than other cables.

5. Do not construct a system with a power supply that is turned ON and OFF frequently.

Outdoor Unit

3 poles isolator

Power supply

Isolator

Indoor unit (Interface unit / Flow temp. controller)

Never splice the power cable or the indoor-outdoor connection cable, otherwise it may result in a smoke, a ﬁ re or communication failure.

OCH526B

9 REFRIGERANT SYSTEM DIAGRAM

PUHZ-SHW80VHA PUHZ-SHW112VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

Distributor

TH7 (Ambient)

Heat exchanger

Refrigerant GAS pipe connection (5/8 inch)

Refrigerant LIQUID pipe connection (3/8 inch)

Stop valve (with service port)

Strainer #100

Power receiver

LEV-B

LEV-C

LEV-A

Strainer #100

TH6 (2-phase pipe)

TH3 (Liquid)

Charge plug (Low pressure)

Charge plug (High pressure)

HIC

TH4 (Discharge)

TH34 (Comp. surface)

COMP

Injection port

Strainer #50

REV/N

Strainer #100

Muffler

Ball valve

TH33 (Ref. check)

TH32 (Suction)

L/P SW

H/P SW

Refrigerant flow in cooling Refrigerant flow in heating

P-sensor

Symbol Parts name Detail

COMP Compressor DC inverter scroll compressor (Mitsubishi Electric Corporation)

H/P SW High pressure switch (63H) For protection (OFF: 4.15MPa)

L/P SW Low pressure switch (63L) For protection (OFF: -0.03MPa)

REV/V Reversing (4-way) valve (21S4) Change the refrigerant circuit (Heating / Cooling) and for Defrosting

Charge plug Charge plug High pressure / Low pressure / For production test use

P-Sensor Pressure sensor (63HS) For calculation of the condensing temperature from high pressure

LEV-A Linear expansion valve -A Heating:Secondary LEV Cooling:Primary LEV

LEV-B Linear expansion valve -B Heating:Primary LEV Cooling:Secondary LEV

LEV-C Linear expansion valve -C For HIC (heating only)

TH32 Suction temperature thermistor For LEV control

TH33

Refrigerant leakage detection (Ref. check) thermistor

For refrigerant leakage detection

TH3 Liquid temperature thermistor Heating:Evaporating temperature Cooling:Sub cool liquid temperature

TH4 Discharge temperature thermistor For LEV control and for compressor protection

TH6

2-phase pipe temperature thermistor

Outdoor 2-phase pipe temperature

TH7 Ambient temperature thermistor For fan control and for compressor frequency control

TH34 Comp. surface temperature thermistor For protection

Power Receiver

Power Receiver For accumulation of refrigerant

HIC Heat interchange circuit For high heating capacity

Plate HEX Plate Heat Exchanger MWA2-38PA (MITSUBISHI)

System example

TH1

Outlet water temperature thermistor For ﬂ ow temp. controller

TH2

Liquid pipe temperature thermistor For ﬂ ow temp. controller

OCH526B

9-3. START AND FINISH OF TEST RUN

• Operation from the indoor unit Execute the test run using the installation manual for the indoor unit.

• Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation

mode (cooling/heating) can be set up.

1 Set the operation mode (cooling/heating) using SW4-2. 2 Turn on SW4-1 to start test run with the operation mode set by SW4-2. 3 Turn off SW4-1 to finish the test run.

• There may be a faint knocking sound around the machine room after power is supplied, but this is no problem with product because the linear expansion pipe is just moving to adjust opening pulse.

• There may be a knocking sound around the machine room for several seconds after compressor starts operating. However, this is not a problem with product because it is generated by the check valve itself due to a small pressure difference in the refrigerant circuit.

OFF

<SW4>





 Stop  Operation  Cooling  Heating

9-2. UNIT REPLACEMENT OPERATION

When reusing the existing pipes that carried R22 refrigerant for the SW75/100/120 models, replacement operation must be performed before performing a test run.

1 If new pipes are used, these procedures are not necessary. 2 If existing pipes that carried R22 refrigerant are used for the SW75/100/120 models, these procedures are not necessary.

(The replacement operation cannot be performed.) 3 During replacement operation, “C5” is displayed on “A-Control Service Tool (PAC-SK52ST)”. (This is applied to only

SW75/100/120 models.)

Note: The operation mode cannot be changed by SW4-2 during test run. (To change test run mode, stop the unit by SW4-1, change the operation mode and restart the test run by SW4-1.)

9-1. REFRIGERANT COLLECTING (PUMP DOWN)

When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedure below so that no refrigerant is released into the atmosphere.

1 Turn off the power supply (circuit breaker). 2 Connect the low-pressure valve on the gauge manifold to the charge plug (low-pressure side) on the outdoor unit. 3 Close the liquid stop valve completely. 4 Supply power (circuit breaker).

• When power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CENTRALLY CONTROLLED” is displayed, the refrigerant collecting (pump down) cannot be completed normally.

• Start-up of the indoor-outdoor communication takes about 3 minutes after the power (circuit breaker) is turned on. Start the

pump-down operation 3 to 4 minutes after the power (circuit breaker) is turned on.

5 Perform the refrigerant collecting operation (cooling test run).

• Push the pump-down SWP switch (push-button type) on the control board of the outdoor unit. The compressor and ventilators (indoor and outdoor units) start operating (refrigerant collecting operation begins). (LED1 and LED2 on the control board of the outdoor unit are lit.)

• Only push the pump-down SWP switch if the unit is stopped. However, even if the unit is stopped and the pump-down SWP switch is pushed less than 3 minutes after the compressor stops, the refrigerant collecting operation cannot be performed. Wait until the compressor has been stopped for 3 minutes and then push the pump-down SWP switch again.

6 Fully close the ball valve on the gas pipe side of the outdoor unit when the pressure gauge on the gauge manifold shows 0.05

to 0 MPa [Gauge] (approx. 0.5 to 0 kgf/cm²) and quickly stop the air conditioner.

• Because the unit automatically stops in about 3 minutes when the refrigerant collecting operation is completed (LED1 off,

LED2 lit), be sure to quickly close the gas ball valve. However, if LED1 is lit, LED2 is off, and the unit is stopped, open the

liquid stop valve completely, close the valve completely after 3 minutes or more have passed, and then repeat step 5. (Open the gas ball valve completely.)

• If the refrigerant collecting operation has been completed normally (LED1 off, LED2 lit), the unit will remain stopped until the power supply is turned off.

• Note that when the extension piping is very long with a large refrigerant amount, it may not be possible to perform a pumpdown operation. In this case, use refrigerant recovery equipment to collect all of the refrigerant in the system.

7 Turn off the power supply (circuit breaker), remove the gauge manifold, and then disconnect the refrigerant pipes.

Warning:

When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.

• If the refrigerant pipes are disconnected while the compressor is operating and the stop valve (ball valve) is open, the pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal injury, etc.

OCH526B

10 TROUBLESHOOTING

10-1. TROUBLESHOOTING

Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the table below. Check the contents below before investigating details.

Unit conditions at service

Error code

Actions to be taken for service (summary)

The trouble is reoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “10-4. Self-diagnosis action table”.

Conduct troubleshooting and ascertain the cause of the trouble according to “10-5. Troubleshooting of problems”.

The trouble is not reoccurring.

Logged

Not logged

Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, matters related to wiring and etc. Reset error code logs and restart the unit after finishing service. There is no abnormality in electrical component, controller board, remote controller and etc.

Re-check the abnormal symptom. Conduct trouble shooting and ascertain the cause of the

trouble

according to “10-5. Troubleshooting

of problems”.

Continue to operate unit for the time being if the cause is not ascertained. There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

10-2. CHECK POINT UNDER TEST RUN

10-2-1. Before test run

(1) Before test run

• After installation of indoor and outdoor units, piping work and electric wiring work, re-check that there is no refrigerant

leakage, loosened connections and incorrect polarity.

• Measure impedance between the ground and the power supply terminal block (L, N) on the outdoor unit by 500V Megger

and check that it is 1.0M" or over.

•

Do not use 500V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block

(1,

2). This may cause malfunction.

• Make sure that test run switch (SW4) is set to OFF before turning on power supply.

• Turn on power supply for 12 hours before test run in order to protect compressor.

• For specific models which requires higher ceiling settings or power failure automatic recovery, make proper changes of

settings referring to the description of “Selection of Functions through Remote Controller”. Make sure to read operation manual before test run. (Especially items to secure safety.)

OCH526B

F1 F2 F3 F4

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Test run Input maintenance info. Function setting Check Self check

F1 F2 F3 F4

Test run menu

Cursor

Service menu:

Test run Drain pump test run

Select "Service" from the Main menu, and press the button.

Select "Test run" with the F1 or F2 button, and press the button.

Select "Test run" with the F1

or F2 button, and press the button.

F1 F2 F3 F4

Cool

Pipe

Auto

Switch disp.

Mode Fan

RemainTest run

F1 F2 F3 F4

Remain

Vane

Cool mode: Check the cold air blow off. Heat mode: Check the heat blow off.

Press the F1

button to go through the operation modes in the order of "Cool

and Heat".

Check the auto vane with the F1

F2 buttons.

• Check the operation of the outdoor unit’s fan.

Press the

button to return to “Test run operation”.

Press the

button.

When the test run is completed, the “Test run menu” screen will appear.

• The test run will automatically stop after two hours.

Test run operation

Auto vane check

Press the button and open the Vane setting screen.

Function buttons

F1 F2 F3 F4

MENU RETURN SELECT ON/OFF

10-2-2. Test run for wired remote controller <PAR-31MAA>

OCH526B

F1 F2 F3 F4

Error information

Error code Error unit IU Ref. address Unt# 1 Model name Serial No.

ResetPage

Error information

Contact information Dealer Tel

ResetPage

Reset error: Reset button

blinks

Error code, error unit, refrigerant address, unit model name, and serial number will appear.

The model name and serial number will appear only if the information have been registered.

Press the

button to go to the next page.

When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer.

Contact information (dealer's phone number) will appear if the information have been registered.

F1 F2 F3 F4

Error information

Error reset

Error code Error unit IU Ref. address Unt# 1 Model name Serial No.

ResetPage

Reset current error?

Error reset

OKCancel

Main menu:

Reset error: Reset button

blinks

Press the

button or the button to reset the error that is occurring.

Errors cannot be reset while the ON/OFF operation is prohibited.

Select "OK" with theF4button.

Navigating through the screens

• To go back to the Main menu ..........

button

OCH526B

F1 F2 F3 F4

Main

Main display:

Cursor Page

Main menu

Restriction Energy saving Night setback Filter information Error information

blinks

While no errors are occurring, page 2/2 of the error information can be viewed by selecting "Error information" from the Main menu. Errors cannot be reset from this screen.

F1 F2 F3 F4

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Test run Input maintenance info. Function setting Check Self check

Check menu

Cursor

Service menu:

Error history Refrigerant volume check Refrigerant leak check Smooth maintenance Request code

F1 F2 F3 F4

Error history

Page

Delete

Check menu:

Error Unt#

dd/mm/yy

Error history

Cancel OK

Delete error history?

Error history

Check menu:

Error history deleted

Select "Error history" with the F1 or F2 button, and press the button.

Select "Check" with the F1

or F2 button, and press the button.

Select "Error history" from the Check menu, and press the button to view up to 16 error history records.

Four records are shown per page, and the top record on the ﬁ rst page indicates the latest error record.

Error history

To delete the error history, press the F4 button (Delete) on the screen that shows error history.

A conﬁ rmation screen will appear asking if you want to delete the error history.

Press the F4

button (OK) to delete the history.

"Error history deleted" will appear on the screen.

Press the

button to go back to the Check menu screen.

Deleting the error history

Select "Service" from the Main menu, and press the button.

OCH526B

[TEST] button

Pipe (liquid) temperature

Displays the remaining test run time.

"TEST RUN" and the currently selected operation mode are displayed alternately.







• In case of test run, the OFF timer will be activated, and the test run will automatically stop after 2 hours.

• The room temperature display section shows the pipe temperature of indoor units during the test run.

• Check that all the indoor units are running properly in case of simultaneous twin operation. Malfunctions may not be displayed regardless of incorrect wiring. * After turning on the power supply, the system will go into startup mode, “PLEASE WAIT” will blink on the display section

of the room temperature, and lamp (green) of the remote controller will flash. As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0. LED3 will blink. As to OUTDOOR BOARD LED, LED1 (green) and LED2 (red) will be lit up. (After the startup mode of the system finishes, LED2 (red) will be turned off.)

In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.

• If one of the above operations does not function correctly, the causes written below should be considered. Find causes from the symptoms. The below symptoms are under test run mode. “startup” in the table means the display status of (

) written above.

Remote Controller Display

Symptoms in test run mode

OUTDOOR BOARD LED Display

Cause

Remote controller displays “PLEASE WAIT”, and

cannot be operated.

After power is turned on, “PLEASE WAIT” is displayed for 3 minutes, then error code is displayed.

No display appears even when remote controller operation switch is turned on. (Operation lamp does not light up.)

Display appears but soon disappears even when remote controller is operated.

• After power is turned on, “PLEASE WAIT” is displayed for 2 minutes during

system startup. (Normal)

• Incorrect connection of outdoor terminal block (L

1, L2, L3 and

S1, S2, S3.)

• Outdoor unit’s protection device connector is open.

• Incorrect wiring between the indoor and outdoor unit (Polarity is wrong for S1, S2, S3.)

• Remote controller transmission wire is short.

• There is no outdoor unit of address 0. (Address is other than 0.)

• Remote controller transmission wire is open.

• After canceling function selection, operation is not possible for about 30 seconds. (Normal)

After “startup” is displayed, only green lights up. <00> After “startup” is displayed, green(once) and red(once) blink alternately. <F1> After “startup” is displayed, green(once) and red(twice) blink alternately. <F3, F5, F9> After “startup” is displayed, green(twice) and red(once) blink alternately. <EA. Eb>

After “startup” is displayed, only green lights up. <00>

< > indicates digital display.

2. Press TEST button twice.

1. Turn on the main power supply.

3. Press OPERATION SWITCH button.

4. Press AIR DIRECTION button.

5. Check the outdoor unit fan for correct running.

6. Press the ON/OFF button to reset the test run in progress.

7. Register the contact number.

While the room temperature display on the remote controller is “PLEASE WAIT”, the remote controller is disabled. Wait until “PLEASE WAIT” disappears before using remote controller. “PLEASE WAIT” appears for about 2 minutes after power supply is turned on. *

The outdoor unit features automatic capacity control to provide optimum fan speeds. Therefore, the fan keeps running at a low speed to meet the current outside air condition unless it exceeds its available maximum power. Then, in actuality, the fan may stop or run in the reverse direction depending on the outside air, but this does not mean malfunction.

Check for correct motion of auto-vanes.

Cooling mode:

Check if cool air blows and water is drained. Heating mode: Check if warm air blows. (It takes a little while until warm air blows.)

The TEST RUN appears on the screen.

Operating procedures

Note: Press the remote controller’s CHECK button twice to perform self-diagnosis. See the table below for the contents of LCD display.

LCD

Contents of inferior phenomena

P1 P2 P4 P5 P6 P8 P9

Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor/Liquid Abnormality of drain sensor/ Float switch connector open Drain overflow protection is operating. Freezing/overheating protection is operating. Abnormality of pipe temperature Abnormality of pipe temperature thermistor/Cond./Eva Abnormality of indoor controller board

LCD

Contents of inferior phenomena

U1~UP F3~F9 E0~E5 E6~EF

----

FFFF

PA PL

Malfunction outdoor unit Malfunction

outdoor unit Remote controller transmitting error Indoor/outdoor unit communication error No error history No applied unit Forced compressor stop(due to water leakage abnormality) Abnormality of refrigerant

LED1

(microprocessor power supply)

LED2

(remote controller)

LED3

(indoor/outdoor communication)

Lights when power is supplied. Lights

when power is supplied for wired remote controller.

The indoor unit should be connected to the outdoor unit with address “0” setting.

Flashes when indoor and outdoor unit are communicating.

See the table below for details of the LED display (LED 1, 2, 3) on the indoor controller board.

10-2-3. Test run for wired remote controller <PAR-21MAA>

OCH526B

ON/OFF

TEMP

FAN

VAN E

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

TEST RUN

RESET

SET

CLOCK









,

10-2-4. Test run for wireless remote controller

Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M".

1 Turn on the main power to the unit.

2 Press the

TEST RUN

button twice continuously.

(Start this operation from the status of remote controller display

turned off.)

TEST RUN

and current operation mode are displayed.

3 Press the

MODE

( ) button to activate

COOL

mode, then

check whether cool air is blown out from the unit.

4 Press the

MODE

( ) button to activate

HEAT

mode, then

check whether warm air is blown out from the unit.

5 Press the

FAN

button and check whether strong air is blown out

from the unit.

6 Press the

VANE

button and check whether the auto vane operates

properly.

7 Press the ON/OFF button to stop the test run.

Note:

• Point the remote controller towards the indoor unit receiver

while following steps 2 to 7.

• It is not possible to run in FAN, DRY or AUTO mode.

OCH526B

F1 F2 F3 F4

unem ecivreS

rosruC

:unem niaM

Test run Input maintenance info. Function setting Check Self check

kcehc fleS

:tceleS

Ref. address

sserddA

kcehc fleS

Ref. address

Return:

teseR

Error Unt # CI.prG

Self check

Return:

Reset

M-NET address

Grp.

Error Unt #

When there is no error history

Self check

Delete error history?

Ref. address

Cancel OK

Self check

Return:

Ref. address

Error history deleted

With theF1or

button, enter the refrigerant address, and press the button.

Select "Self check" with the F1 or F2 button, and press the button.

Select "Service" from the Main menu, and press the button.

Error code, unit number, attribute will appear.

"-" will appear if no error history is available.

Resetting the error history.

Press the

button (Reset) on the screen that shows the error history.

A conﬁ rmation screen will appear asking if you want to delete the error history.

Press the

button (OK) to delete the error history.

If deletion fails, "Request rejected" will appear. "Unit not exist" will appear if no indoor units that are correspond to the entered address are found.

Navigating through the screens

• To go back to the Main menu ..........

button

• To return to the previous screen .......

button

10-3. HOW TO PROCEED "SELF-DIAGNOSIS"

10-3-1. Self-diagnosis <PAR-31MAA>

OCH526B

If operations cannot be completed with the remote controller, diagnose the remote controller with this function.

F1 F2 F3 F4

unem ecivreS

rosruC

:unem niaM

Maintenance password Remote controller check

F1 F2 F3 F4

Remote controller check

:nigeB

Start checking?

Remote controller check

:nigeB

Start checking?

Select "Service" from the Main menu, and press the button.

Select "Remote controller check" with the F1

or F2 button, and press

the

button.

Select "Remote controller check" from the Service menu, and press the but-

ton to start the remote controller check and see the check results.

To cancel the remote controller check and exit the Remote controller check menu screen, press the

or the button.

The remote controller will not reboot itself.

Check the remote controller display and see if anything is displayed (including lines). Nothing will appear on the remote controller display if the correct voltage (8.5 – 12 VDC) is not supplied to the remote controller. If this is the case, check the remote controller wiring and indoor units.

OK: No problems are found with the remote controller. Check other

parts for problems.

E3, 6832: There is noise on the transmission line, or the indoor unit or another

remote controller is faulty. Check the transmission line and the other remote controllers.

NG (ALL0, ALL1):

Send-receive circuit fault. Remote controller needs replacing.

ERC:

The number of data errors is the discrepancy between the number of bits in the data transmitted from the remote controller and that of the data that was actually transmitted over the transmission line. If data errors are found, check the transmission line for external noise interference.

Remote controller check results screen

If the button is pressed after the remote controller check results are displayed, remote controller check will end, and the remote controller will automati-

cally reboot itself.

10-3-2. Remote controller check <PAR-31MAA>

OCH526B

ON/OFF

When using remote-/local-controller combined operation, cancel the error code after turning off remote operation. During

central control by a MELANS controller, cancel the error code by pressing the

ON/OFF

button.

Since each unit has a function that stores error codes, the latest check code can be recalled even if it is cancelled by the remote controller or power is turned off.

Check the error code history for each unit using the remote controller.



Switch to self-diagnosis mode.



Press the

CHECK

button twice within 3 seconds. The display content

will change as shown below.



Set the unit number or refrigerant address you want to diagnose.



Press the [TEMP] buttons ( and ) to select the desired number or address. The number (address) changes between [01] and [50] or [00]



Display self-diagnosis results. <When there is error code history> (For the definition of each error code, refer to the indoor unit's installation manual or service handbook.)



Reset the error history. Display the error history in the diagnosis result display screen (see step





















Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

The refrigerant address will begin to blink approximately 3 seconds after being selected and the self-diagnosis process will begin.

Unit number or refrigerant address to be diagnosed

Error code (2 or 4 digits)

(Alternating Display)

Address (3 digits) or unit number (2 digits)

and

[15].

If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display.  [CHECK] and the refrigerant address are displayed on the

temperature display, and the error code and unit number are displayed alternately as shown below. (If the outdoor unit is malfunctioning, the unit number will be “00”.)

 In the case of group control, for which one remote controller controls

multiple refrigerant systems, the refrigerant address and error code of the unit that first experienced trouble (i.e., the unit that transmitted the error code) will be displayed.

 To clear the error code, press the button.

10-3-3. Self-diagnosis <PAR-21MAA>

10-3-4. Self-Diagnosis During Maintenance or Service <PAR-21MAA>

OCH526B

Transmission data from remote controller

Transmission data on transmission path

When the number of data errors is "02":



Press the

ON/OFF

button twice within 3 seconds. The self-diagnosis

address or refrigerant address will blink.

When the error history is reset, the display will look like the one shown below. However, if you fail to reset the error history, the error content will be displayed again.



Cancel self-diagnosis. Self-diagnosis can be cancelled by the following 2 methods.



Press the

CHECK

button twice within 3 seconds.  Self-diagnosis will be cancelled and the screen will return to the previous state in effect before the

start of self-diagnosis.



Press the

ON/OFF

button.  Self-diagnosis will be cancelled and the indoor unit will stop.

If the air conditioner cannot be operated from the remote controller, diagnose the remote controller as explained below.



First, check that the power-on indicator is lit. If the correct voltage (DC12 V) is not supplied to the remote controller, the indicator will not light. If this occurs, check the remote controller's wiring and the indoor unit.



Switch to the remote controller self-diagnosis mode.



Press the

CHECK

button for 5 seconds or more. The display content will

change as shown below.



Press the

FILTER

button to start self-diagnosis.



Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

Check for other possible causes, as there is no problem with the remote controller.

[When the remote controller malfunctions] (Error display 1) "NG" blinks. ©The remote controller's transmitting-receiv-

ing circuit is defective.

The remote controller must be replaced with a new one.

[Where the remote controller is not defective, but cannot be operated.] (Error display 2) [E3], [6833] or [6832] blinks.© Transmission is not

There might be noise or interference on the transmission path, or the indoor unit or other remote controllers are defective. Check the transmission path and other controllers.

(Error display 3)

"ERC" and the number of data errors are displayed. © Data error has occurred.

The number of data errors is the difference between the number of bits sent from the remote controller and the number actually transmitted through the transmission path. If such a problem is occurring, the transmitted data is affected by noise, etc. Check the transmission path.



To cancel remote controller diagnosis



Press the

CHECK

button for 5 seconds or more. Remote controller diagnosis will be cancelled, "PLEASE WAIT" and operation lamp will blink. After

approximately 30 seconds, the state in effect before the diagnosis will be restored.

Power on indicator

possible.

10-3-5. Remote controller check <PAR-21MAA>

OCH526B

• "CHECK" lights, and refrigerant address "00" blinks.

• Check that the remote controller's display has stopped before continuing.

• Select the refrigerant address of the indoor unit for the self-diagnosis.

Note: Set refrigerant address using the

outdoor unit’s DIP switch (SW1).

( For more information, see the

outdoor unit installation manual.)

• If an air conditioner error occurs, the indoor unit's sensor emits an intermittent buzzer sound, the operation lamp blinks, and the error code is output. (It takes 3 seconds at most for error code to appear.)

• The check mode is cancelled.

[Procedure]

1. Press the CHECK button twice.

2. Press the temperature buttons.

3. Point the remote controller at the sensor on the indoor unit and press the HOUR button.

4. Point the remote controller at the sensor on the indoor unit and press the ON/OFF button.

<Malfunction-diagnosis method at maintenance service>

10-3-6. Self-diagnosis <Wireless remote controller>

When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop.

ON/OFF

TEMP

FAN

VAN E

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

RESET

SET

CLOCK

CHECK

CHECK display

Temperature button

CHECK button

Refrigerant address display

HOUR button

ON/OFF button

OCH526B

[Output pattern A] Errors detected by indoor unit

[Output pattern B]

Notes: 1. If the beeper does not sound again after the initial

2 beeps to confirm the self-check start signal was received and

the OPERATION INDICATOR lamp does not come on,

there are no error records.

2. If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial 2 beeps to confirm the self-check start signal was received, the specified refrigerant address is incorrect.

OPERATION INDICATOR lamp blink pattern

Beep Beep Beep Beep Beep

Beep Beep

Off

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.

Off

Approx. 2.5 sec.OnApprox. 3 sec.On0.5 sec.On0.5 sec.

· · · Repeated

Number of blinks/beeps in pattern indicates the check code in the following table. (i.e., n=5 for “U2”)

Number of blinks/beeps in pattern indicates the check code in the following table.

1st2nd3

1st2

Self-check starts. (Start signal received)

Beeper sounds

[Output pattern B]

OPERATION INDICATOR lamp blink pattern

Beep

Beep Beep Beep Beep Beep Beep

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.On0.5 sec.

0.5 sec.

Off

Approx. 2.5 sec.On0.5 sec.On0.5 sec.

· · · Repeated

Number of blinks/beeps in pattern indicates the check code in the following table. (i.e., n=5 for “P5”)

Number of blinks/beeps in pattern indicates the check code in the following table.

1st2nd3

1st2

Self-check starts. (Start signal received)

Beeper sounds

 Refer to the following tables for details on the check codes. [Output pattern A]

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

Symptom Remarks

(Number of times)

Wireless remote controller

Wired remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

(Number of times)

Wireless remote controller

Wired remote controller

1P1

Intake sensor error

P9 Pipe (TH5) sensor error

P2 Pipe (TH2) sensor error

3E6,E7

Indoor/outdoor unit communication error

4 P4 Drain sensor error/Float switch connector open 5

P5 Drain pump error

PA Forced compressor stop(due to water leakage abnormality) 6 P6 Freezing/Overheating protection operation 7 EE Communication error between indoor and outdoor units 8 P8 Pipe temperature error 9 E4, E5 Remote controller signal receiving error

–

– –

Errors detected by unit other than indoor unit (outdoor unit, etc.)

Symptom Remarks

Indoor/outdoor unit communication error

(Transmitting error) (Outdoor unit)

Open/short of outdoor unit thermistors

Compressor overcurrent interruption (When compressor locked)

5 Abnormal high discharging temperature/insufficient refrigerant 6

Abnormal high pressure (63H operated)/Overheating protection operation

Abnormal temperature of heatsink

Outdoor unit fan protection stop

Compressor overcurrent interruption/Abnormal of power module

Abnormality of superheat due to low discharge temperature

Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error

12 13

UP U3,U4 UF

U1,Ud

U8 U6 U7

U9,UH

Others

– –

Other errors (Refer to the technical manual for the outdoor unit.)

For details, check the LED display of the outdoor controller board.

12 Fb Indoor unit control system error (memory error, etc.) 14 PL Abnormality of refrigerant circuit

–

E0, E3

– E1, E2 Remote controller control board error

Remote controller transmission error

Compressor overcurrent interruption

As for indoor unit, refer to indoor unit's service manual.

OCH526B

10-4. SELF-DIAGNOSIS ACTION TABLE

(Note 1) Refer to indoor unit section for code P and code E.

Error Code

Abnormal point and detection method

Case

Judgment and action

None —

No voltage is supplied to terminal

block (TB1) of outdoor unit.

a) Power supply breaker is

turned off.

b) Contact failure or

disconnection of power supply terminal

c) Open phase (L or N phase)

2 Electric power is not charged

to power supply terminal of outdoor power circuit board.

a) Contact failure of power

supply terminal

b) Open phase on the outdoor

power circuit board

3 Electric power is not supplied

to outdoor controller circuit board.

a) Disconnection of connector

(CNDC)

4 Disconnection of reactor (DCL

or ACL)

5 Disconnection of outdoor noise

filter circuit board or parts failure in outdoor noise filter circuit board

6 Defective outdoor power circuit

board

7 Defective outdoor controller

circuit board

1 Check following items.

a) Power supply breaker b) Connection of power supply terminal block (TB1) c) Connection of power supply terminal block (TB1)

2 Check following items.

a) Connection of power supply terminal block (TB1) b) Connection of terminal on outdoor power

circuit board

Check connection of the connector LI or NI. Refer to 10-9.

3 Check connection of the connector (CNDC)

on the outdoor controller circuit board.

Check connection of the connector, CNDC on

the outdoor power circuit board(V)/the noise filter(Y). Refer to 10-9.

4 Check connection of reactor. (DCL or ACL)

Refer to 10-9.

5 a) Check connection of outdoor noise filter

circuit board.

b) Replace outdoor noise filter circuit board.

Refer to 10-9.

6 Replace outdoor power circuit board.

7 Replace controller board (When items above

are checked but the units can not be repaired).

(5201)

63H connector open

Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply.

63H: High-pressure switch

1 Disconnection or contact failure

of 63H connector on outdoor controller circuit board

2 Disconnection or contact failure

of 63H

3 63H is working due to defective

parts.

4 Defective outdoor controller

circuit board

1 Check connection of 63H connector on

outdoor controller circuit board.

Refer to 10-9.

2 Check the 63H side of connecting wire.

3 Check continuity by tester.

Replace the parts if the parts are defective. 4 Replace outdoor controller circuit board.

(5202)

63L connector open

Abnormal if 63L connector circuit is open for 3 minutes continuously after power supply.

63L: Low-pressure switch

1 Disconnection or contact failure

of 63L connector on outdoor controller circuit board

2 Disconnection or contact failure

of 63L

3 63L is working due to

refrigerant leakage or defective parts.

4 Defective outdoor controller

circuit board

1 Check connection of 63L connector on

outdoor controller circuit board.

Refer to 10-9.

2 Check the 63L side of connecting wire.

3 Check refrigerant pressure.

Charge additional refrigerant. Check continuity by tester. Replace the parts if the parts are defective. 4 Replace outdoor controller circuit board.

OCH526B

Error Code

Abnormal point and detection method Judgment and action

(6845)

Miswiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)

Outdoor controller circuit board can automatically set the unit number of indoor units. Abnormal if the indoor unit number can not be set within 4 minutes after power on because of miswiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.

(6846)

Start-up time over

The unit cannot finish start-up process within 4 minutes after power on.

Case

1 Contact failure of indoor/

outdoor unit connecting wire

2 Diameter or length of indoor/

outdoor unit connecting wire is out of specified capacity.

7 2 or more outdoor units have

refrigerant address “0” .

(In case of group control) 8 Noise has entered into power

supply or indoor/outdoor unit connecting wire.

1 Contact failure or miswiring of

indoor/outdoor unit connecting wire

2 Diameter or length of indoor/

outdoor unit connecting wire is out of specified capacity.

4 Defective transmitting receiving

circuit of outdoor controller circuit board

5 Defective transmitting receiving

circuit of indoor controller board

6 Defective indoor power board 7 2 or more outdoor units have

refrigerant address “0” .

(In case of group control) 8 Noise has entered into power

supply or indoor/outdoor unit connecting wire.

Indoor/outdoor unit connector miswiring, excessive number of units (4 units or more)

1. Outdoor controller circuit board can automatically check the number of connected indoor units. Abnormal if the number cannot be checked automatically due to miswiring of indoor/outdoor unit connecting wire and etc. after power is turned on for 4 minutes.

2. Abnormal if outdoor controller circuit board recognizes the number of connected indoor units as “4 units or more”.

1 Check disconnection or looseness or polarity

of indoor/outdoor unit connecting wire of indoor and outdoor units.

2 Check diameter and length of indoor/outdoor

unit connecting wire. Total wiring length: 80m (including wiring connecting each indoor unit

and between indoor and outdoor unit) Also check if the connection order of flat

cable is S1, S2, S3.

3 Check the number of indoor units that are

connected to one outdoor unit. (If EA is

detected)

4~6 Turn the power off once, and on again to

check. Replace outdoor controller circuit board, indoor controller board or indoor power board if abnormality occurs again.

Check if refrigerant addresses (SW1-3 to

SW1-6 on outdoor controller circuit board) are

overlapping in case of group control system.

8 Check transmission path, and remove the

cause.

Note: The descriptions above, 1~8, are for EA,

Eb and EC.

1 Contact failure or miswiring of

indoor/outdoor unit connecting wire

2 Diameter or length of indoor/

outdoor unit connecting wire is out of specified capacity.

3 4 or more indoor units are

connected to one outdoor unit.

4 Defective transmitting receiving

circuit of outdoor controller circuit board

5 Defective transmitting receiving

circuit of indoor controller board

6 Defective indoor power board 7 2 or more outdoor units have

refrigerant address “0” .

(In case of group control) 8 Noise has entered into power

supply or indoor / outdoor unit connecting wire.

(6844)

(4119)

2 connector open

Abnormal if both 63H and 63L connector circuits are open for three minutes continuously after power supply.

63H: High-pressure switch 63L: Low-pressure switch

1 Disconnection or contact failure

of connector (63H,63L) on outdoor controller circuit board.

2 Disconnection or contact failure

of 63H, 63L

3 63H and 63L are working due

to defective parts.

4 Defective outdoor controller

board.

1 Check connection of connector (63H,63L) on

outdoor controller circuit board. Refer to 10-9. 2 Check the 63H and 63L side of connecting

wire. 3 Check continuity by tester. Replace the parts if the parts are defective. 4 Replace outdoor controller circuit board.

OCH526B

Error Code

Abnormal point and detection method Judgment and action

(1302)

High pressure (High pressure switch 63H operated)

Abnormal if high pressure switch 63H operated (4.15 MPa) during compressor operation.

63H: High pressure switch

1 Short cycle of indoor unit 2 Clogged filter of indoor unit 3 Decreased airflow caused by

dirt of indoor fan

4 Dirt of indoor heat exchanger 5 Locked indoor fan motor 6 Malfunction of indoor fan motor 7 Defective operation of stop

valve (Not full open)

8 Clogged or broken pipe 9 Locked outdoor fan motor

0 Malfunction of outdoor fan

motor

1 Short cycle of outdoor unit 2 Dirt of outdoor heat exchanger 3 Decreased airflow caused by

defective inspection of outside temperature thermistor

(It detects lower temperature

than actual temperature.)

4 Disconnection or contact failure

of connector (63H) on outdoor controller board

5 Disconnection or contact failure

of 63H connection

6 Defective outdoor controller

board

7 Defective action of linear

expansion valve

8 Malfunction of fan driving circuit

1~6 Check indoor unit and repair defect.

7 Check if stop valve is fully open.

8 Check piping and repair defect. 9~2 Check outdoor unit and repair defect.

3 Check the detected temperature of outside

temperature thermistor on LED display.

(SW2 on A-Control Service Tool : Refer to

10-10.)

4~6 Turn the power off and check F5 is

displayed when the power is turned again.

When F5 is displayed, refer to “Judgment

and action” for F5.

7 Check linear expansion valve. Refer to 10-6. 8 Replace outdoor controller board.

Case

(1102)

(5104)

Open/short circuit of outdoor unit temperature thermistor (TH4, TH34)

Abnormal if open (3: or less) or short (217: or more) is detected during compressor operation. (Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting.)

TH4: Thermistor <Discharge> TH34: Thermistor <Comp. surface>

Disconnection or contact failure of connectors (TH4, TH34) on the outdoor controller circuit board

2 Defective thermistor

3 Defective outdoor controller

circuit board

1 Check connection of connector (TH4, TH34)

on the outdoor controller circuit board. Check breaking of the lead wire for TH4, TH34. Refer to 10-9. 2 Check resistance value of TH4, TH34 or

temperature by microprocessor. (Thermistor/TH4, TH34: Refer to 10-6.) (SW2 on A-Control Service Tool: Refer to 10-10.) 3 Replace outdoor controller board.

High discharging temperature

(1) Abnormal if TH4 exceeds 125: or

110 : continuously for 5 minutes.

Abnormal if TH4 exceeds 110: or

more continuously for 30 seconds after 90 seconds have passed since the defrosting operation started.

(2) Abnormal if discharge superheat (Cooling: TH4 – T63HS / Heating: TH4 –

63HS)

exceeds 70: continuously for 10

minutes.

TH4: Thermistor <Discharge>

High comp. surface temperature

Abnormal if TH34 exceeds 125:. In the case of high comp. surface temperature error, compressor does not restart unless the thermistor (TH34) becomes less than 95:.

TH34: Thermistor <Comp. surface>

1 Overheated compressor

operation caused by shortage of refrigerant

2 Defective operation of stop

valve

3 Defective thermistor 4 Defective outdoor controller

board

5 Defective action of linear

expansion valve

6 Clogging with foreign objects in

refrigerant circuit

* Clogging occur in the parts

which become below freezing point when water enters in refrigerant circuit.

7 In the case of the unit does not

restart: Detection temp. of thermistor (TH34) ] 95:

1 Check intake superheat. Check leakage of refrigerant. Charge additional refrigerant.

2 Check if stop valve is fully open.

Turn the power off and check if U3 is displayed when the power is turned on again.

When U3 is displayed, refer to “Judgement

and action” for U3.

5 Check linear expansion valve. Refer to 10-6. 6 After recovering refrigerant, remove water

from entire refrigerant circuit under vacuum

more than 1 hour.

OCH526B

Error Code

Abnormal point and detection method

Case

Judgment and action

(4230)

Temperature of heatsink

Abnormal if TH8 detects temperature indicated below. SHW80V ·········································95: SHW112V ·········································95: SHW112Y ·········································84: SHW140Y ·········································84:

TH8: Internal thermistor (80/112V) TH8: Thermistor <Heatsink> (112/140Y)

The outdoor fan motor is locked.

2 Failure of outdoor fan motor 3 Air flow path is clogged. 4 Rise of ambient temperature

5 Defective thermistor

6 Defective input circuit of

outdoor power circuit board

Failure of outdoor fan drive circuit

12 Check outdoor fan.

3 Check air flow path for cooling. 4 Check if there is something which causes

temperature rise around outdoor unit.

(Upper limit of ambient temperature is 46:.) Turn off power, and on again to check if U5 is displayed within 30 minutes. If U4 is displayed instead of U5, follow the action to be taken for U4.

5 Check resistance value of TH8 or tempera-

ture by microprocessor.

(TH8: Refer to 10-6.)

(SW2 on A-Control Service Tool: Refer to 10-10.)

6 Replace outdoor power circuit board.

7 Replace outdoor controller circuit board.

U4 (TH3:5105) (TH6:5107) (TH7:5106) (TH8:5110)

(TH32:5105) (TH33:5105)

Open/short of outdoor unit thermistors (TH3, TH32, TH33, TH6, TH7, and TH8)

Abnormal if open or short is detected during compressor operation. Open detection of TH3, TH32, TH33 and TH6 is inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting. Note: Check which unit has abnormality in

its thermistor by switching the mode of SW2. (PAC-SK52ST) (Refer to 10-10.)

Check connection of connector (TH3, TH32, TH33, TH7/6) on the outdoor controller circuit board. Check connection of connector (CN3) on the outdoor power circuit board. Check breaking of the lead wire for

TH3, TH32, TH33, TH6, TH7, TH8. Refer to 10-9.

2 Check resistance value of TH3, TH32, TH33,

TH6,TH7,TH8 or check temperature by microprocessor. (TH3,TH6,TH7,TH8: Refer to 10-6.) (SW2 on A-Control Service Tool: Refer to 10-10.)

3 Replace outdoor controller circuit board.

Note: Emergency operation is available in

case of abnormalities of TH3, TH32, TH33, TH6 and TH7. Refer to 10-8.

1 Disconnection or contact failure

of connectors Outdoor controller circuit board

TH3, TH32, TH33, TH7/6

Outdoor power circuit board

CN3

2 Defective thermistor

3 Defective outdoor controller

circuit board

()

(4250)

Power module

Check abnormality by driving power module in case overcurrent is detected. (UF or UP error condition)

1 Outdoor stop valve is closed. 2 Decrease of power supply voltage 3

Looseness, disconnection or converse of compressor wiring connection

4 Defective compressor 5

Defective outdoor power circuit board

1 Open stop valve. 2 Check facility of power supply. 3

Correct the wiring (U•V•W phase) to compressor. Refer to 10-9 (Outdoor power circuit board).

4 Check compressor referring to 10-6. 5 Replace outdoor power circuit board.

(1520)

Too low superheat due to low discharge temperature

Abnormal if discharge superheat is continuously detected less than or equal to -15: for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes.

1 Disconnection or loose

connection of discharge temperature thermistor (TH4)

2 Defective holder of discharge

temperature thermistor

3 Disconnection or loose connection

of linear expansion valve’s coil

Disconnection or loose connection of linear expansion valve’s connector

5 Defective linear expansion valve

12 Check the installation conditions of

discharge temperature thermistor (TH4).

3 Check the coil of linear expansion valve. Refer to 10-7. 4 Check the connection or contact of LEV-A and

LEV-B on outdoor controller circuit board.

5 Check linear expansion valve. Refer to 10-6.

Thermistors

Open detection Short detection

Symbol Name

TH3,TH32,TH33 Thermistor <Liquid>, <Suction>, <Ref. check> - 40 °C or below 90 °C or above

TH6 Thermistor <2-phase pipe> - 40 °C or below 90 °C or above TH7 Thermistor <Ambient> - 40 °C or below 90 °C or above TH8 Thermistor <Heatsink> SHW112, 140Y - 35 °C or below 102 °C or above TH8 Internal thermistor SHW80, 112V - 35 °C or below 170 °C or above

(4400)

Outdoor fan motor

Abnormal if rotational frequency of the fan motor is not detected during DC fan motor operation. Fan motor rotational frequency is abnormal if;

• 100 rpm or below detected continuously

for 15 seconds at 20: or more outside air temperature.

• 50 rpm or below or 1500 rpm or more detected continuously for 1 minute.

1 Failure in the operation of the

DC fan motor

2 Failure in the outdoor circuit

controller board

1 Check or replace the DC fan motor.

2 Check the voltage of the outdoor circuit

controller board during operation.

3 Replace the outdoor circuit controller board.

(When the failure is still indicated even after performing the action 1 above.)

OCH526B

Error Code

Abnormal point and detection method

Case

Judgment and action

(4220)

Detailed

codes

To find out the details about U9 error, turn ON SW2-1, 2-2, 2-3, 2-4, 2-5 and 2-6 when U9 error occurs. To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6. Refer to 10-10.

Overvoltage error

• Increase in DC bus voltage to SHW80, 112VHA: 400V SHW112, 140YHA: 760V

1 Abnormal increase in power source

voltage

2 Disconnection of compressor wiring

3 Defective outdoor power circuit

board

4 Compressor has a ground fault.

1 Check the field facility for the power

supply.

2 Correct the wiring (U.V.W phase) to

compressor. Refer to 10-9 (Outdoor power circuit board).

3 Replace outdoor power circuit board. 4 Check compressor for electrical insula-

tion. Replace compressor.

Undervoltage error

• Instantaneous decrease in DC bus voltage to SHW80, 112VHA: 200V SHW112, 140YHA: 350V

1 Decrease in power source voltage,

instantaneous stop.

2 Disconnection or loose connection

of CN52C on the outdoor power circuit board/controller circuit board (SHW·VHA)

3 Defective converter drive circuit

in outdoor power circuit board (SHW·VHA)

4 Defective 52C drive circuit in outdoor

power circuit board

5 Defective outdoor converter circuit

board (SHW·YHA)

6 Disconnection or loose connection

of rush current protect resistor RS (SHW·YHA)

7 Defective rush current protect

resistor RS (SHW·YHA)

8 Disconnection or loose connection

of main smoothing capacitor CB (SHW·VHA)

9 Disconnection or loose connection

of CN2 on the outdoor power circuit board /controller circuit board (SHW·VHA)

0 Power circuit failure on DC supply for

18V DC output on outdoor controller circuit board (SHW·VHA)

1 Check the field facility for the power

supply.

2 Check CN52C wiring. (SHW·VHA)

3 Replace outdoor power circuit board.

(SHW·VHA)

4 Replace outdoor power circuit board.

5 Replace outdoor converter circuit

board. (SHW·YHA)

6 Check RS wiring. (SHW·YHA)

7 Replace RS. (SHW·YHA)

8 Check CB wiring. (SHW·VHA)

9 Check CN2 wiring. (SHW·VHA)

0 Replace outdoor controller circuit board.

(SHW·VHA)

Input current sensor error/ L1-phase open error

• Decrease in input current through outdoor unit to 0.1A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 6A.

1 L1-phase open (SHW·YHA)

2 Disconnection or loose connection

between TB1 and outdoor noise filter circuit board (SHW·YHA)

3 Disconnection or loose connection

of CN5 on the outdoor power circuit board/CNCT on the outdoor noise filter board

4 Defective ACCT (AC current trans)

on the outdoor noise filter circuit board (SHW·YHA)

5 Defective input current detection

circuit in outdoor power circuit board

6 Defective outdoor controller circuit

board

1 Check the field facility for the power

supply. (SHW·YHA)

2 Check the wiring between TB1 and

outdoor noise filter circuit board. (SHW·YHA)

3 Check CN5/CNCT wiring. (SHW·YHA)

4 Replace outdoor noise filter circuit

board. (SHW·YHA)

5 Replace outdoor power circuit board.

6 Replace outdoor controller circuit board.

Abnormal power synchronous signal

• No input of power synchronous signal to power circuit board

• Power synchronous signal of 44 Hz or less, or 65 Hz or more is detected on power circuit board.

1 Distortion of power source voltage,

noise superimposition.

2 Disconnection or loose connection

of earth wiring

3 Disconnection or loose connection

of CN2 on the outdoor power circuit board /controller circuit board

4 Defective power synchronous signal

circuit in outdoor controller circuit board

5 Defective power synchronous signal

circuit in outdoor power circuit board

1 Check the field facility for the power

supply.

2 Check earth wiring.

3 Check CN2 wiring.

4 Replace outdoor controller circuit board.

5 Replace outdoor power circuit board.

Continue to the next page

OCH526B

(4100)

Compressor overcurrent interruption (When compressor locked)

Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating.

1 Stop valve is closed. 2 Decrease of power supply

voltage

3 Looseness, disconnection or

converse of compressor wiring connection

4 Defective compressor

5 Defective outdoor power board

1 Open stop valve. 2 Check facility of power supply.

3 Correct the wiring (U•V•W phase) to

compressor.

Refer to 10-9 (Outdoor power circuit board). 4 Check compressor. Refer to 10-6. 5 Replace outdoor power circuit board.

(1504)

Overheat protection

Abnormal if TH3, condensing temperature T

63HS detects 70: or more during com-

pressor operation.

TH3: Thermistor <Liquid>

Defective outdoor fan (fan motor) or short cycle of outdoor unit during cooling operation

2 Defective TH3, condensing

temperature T

63HS

Defective outdoor controller board

1 Check outdoor unit air passage.

23 Turn the power off and on again to check

the error code. If U4 is displayed, follow the U4 processing direction.

(1302)

Abnormal pressure of 63HS

Abnormal if 63HS detects 0.1 MPa or less. Detection is inoperative for 3 minutes after compressor starting and 3 minutes after and during defrosting.

63HS: High pressure sensor

1 Disconnection or contact

failure of connector (63HS) on the outdoor controller circuit board

2 Defective pressure sensor

3 Defective outdoor controller

circuit board

1 Check connection of connector (63HS) on

the outdoor controller circuit board.

Check breaking of the lead wire for 63HS.

2 Check pressure by microprocessor.

(Pressure sensor/ 63HS) (SW2: Refer to 10-10.)

3 Replace outdoor controller board.

Error Code

Abnormal point and detection method

Case

Judgment and action

PFC error (Overvoltage/ Undervoltage/Overcurrent)

• PFC detected any of the followings

a) Increase of DC bus voltage

to 420V.

b) Decrease in PFC control

voltage to 12V DC or lower

c) Increase in input current to

50A peak (For models equipped with single-phase PFC only)

Not applicable for SHW80, 112VHA and SHW112, 140YHA models.

Check for the switch settings for Model Select on the outdoor controller circuit board.

PFC/IGBT error (Undervoltage)

•

When Compressor is running, DC bus voltage stays at 310V or lower for consecutive 10 seconds

(SHW80, 112VHA only)

1 Incorrect switch settings on the

outdoor controller circuit board for model select

2 Defective outdoor power circuit

board

3 Defective outdoor controller

circuit board

1 Correction of a model select

2 Replace outdoor power circuit board.

3 Replace outdoor controller circuit board.

(5300)

Current sensor error or input current error

• Abnormal if current sensor detects –1.0A to 1.0A during compressor operation. (This error is ignored in case of test run mode.)

• Abnormal if 40A (SHW80,112V) of input current is detected or 37A (SHW80,112V) or more of input current is detected for 10 seconds continuously.

1 Disconnection of compressor

wiring

2 Defective circuit of current

sensor on outdoor power circuit board

3 Decrease of power supply

voltage

1 Correct the wiring (U

•V•

W phase) to compressor. Refer to 10-9 (Outdoor power circuit board).

2 Replace outdoor power circuit board.

3 Check the facility of power supply.

(1300)

Low pressure (63L operated)

Abnormal if 63L is operated (under

-0.03MPa) during compressor operation.

63L: Low pressure switch

1 Stop valve of outdoor unit is

closed during operation.

2 Disconnection or loose

connection of connector (63L) on outdoor controller board

3 Disconnection or loose

connection of 63L

4 Defective outdoor controller

board

5 Leakage or shortage of

refrigerant

6 Malfunction of linear expansion

valve

1 Check stop valve.

2~4 Turn the power off and on again to check

if F3 is displayed on restarting. If F3 is displayed, follow the F3 processing direction.

5 Correct to proper amount of refrigerant.

6 Check linear expansion valve.

Refer to 10-6.

(4220)

Detailed

codes

From the previous page.

OCH526B

Error Code

Abnormal point and detection method Judgment and action

Case

(4210)

Remote controller transmission error (E0)/ signal receiving error (E4)

1 Abnormal if main or sub remote

controller cannot receive normally any transmission from indoor unit of refrigerant address “0” for 3 minutes.

(Error code : E0) 2 Abnormal if sub remote controller could

not receive any signal for 2 minutes. (Error code: E0)

1 Abnormal if indoor controller board can

not receive normally any data from remote controller board or from other indoor controller board for 3 minutes. (Error code: E4)

2 Indoor controller board cannot receive

any signal from remote controller for 2 minutes. (Error code: E4)

1 Check disconnection or looseness of indoor

unit or transmission wire of remote controller.

2 Set one of the remote controllers “main” if

there is no problem with the action above.

3 Check wiring of remote controller.

• Total wiring length: Max. 500m (Do not use cable o 3 or more.)

• The number of connecting indoor units: Max. 16 units

• The number of connecting remote controller: Max. 2 units

When it is not the above-mentioned problem of

1~3 4 Diagnose remote controllers.

a) When “RC OK” is displayed,

Remote controllers have no problem. Turn the power off, and on again to check. If abnormality generates again, replace indoor controller board.

b) When “RC NG” is displayed,

Replace remote controller.

c) When "RCE3" or "ERC00-66" is displayed,

noise may be causing abnormality.

Note: If the unit is not normal after replac-

ing indoor controller board in group control, indoor controller board of address “0” may be abnormal.

1 Contact failure at transmission

wire of remote controller

2 All remote controllers are set

as “sub” remote controller. In this case, E0 is displayed on remote controller, and E4 is displayed at LED (LED1, LED2) on the outdoor controller circuit board.

3 Miswiring of remote controller

4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

circuit of indoor controller board of refrigerant address “0”

6 Noise has entered into the

transmission wire of remote controller.

Compressor overcurrent interruption

Abnormal if overcurrent DC bus or compressor is detected after compressor starts operating for 30 seconds.

1 Stop valve of outdoor unit is

closed.

2 Decrease of power supply

voltage

3 Looseness, disconnection or

converse of compressor wiring connection

4 Defective fan of indoor/outdoor

units

5 Short cycle of indoor/outdoor

units

6 Defective input circuit of

outdoor controller board

7 Defective compressor 8 Defective outdoor power circuit

board

9 Dip switch setting difference of

outdoor controller circuit board

1 Open stop valve.

2 Check facility of power supply.

3 Correct the wiring (U·V·W phase) to

compressor

. Refer to 10-9 (Outdoor power

circuit board).

Check indoor/outdoor fan.

5 Solve short cycle.

6 Replace outdoor controller circuit board.

Note: Before the replacement of the outdoor

controller circuit board, disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases, U, V, W, during test run. No defect on board if voltage among phases (U-V, V-W and W-U) is same. Make sure to perform the voltage check with same performing frequency.

7 Check compressor. Refer to 10-6. 8 Replace outdoor power circuit board. 9 Check the dip switch setting of outdoor

controller circuit board.

Remote controller control board

1 Abnormal if data cannot be normally

read from the nonvolatile memory of the remote controller control board. (Error code: E1)

2 Abnormal if the clock function of remote

controller cannot be normally operated. (Error code: E2)

1 Defective remote controller

1 Replace remote controller.

OCH526B

Error Code

Abnormal point and detection method Judgment and action

(6841)

Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)

Abnormal if “0” receiving is detected 30 times continuously though outdoor controller circuit board has transmitted “1”.

2 Abnormal if outdoor controller

circuit board could not find blank of transmission path for 3 minutes.

1 Indoor/ outdoor unit connecting

wire has contact failure.

2 Defective communication circuit

of outdoor controller circuit board

3 Noise has entered power supply. 4 Noise has entered indoor/

outdoor unit connecting wire.

1 Check disconnection or looseness of indoor/

outdoor unit connecting wire.

2~4 Turn the power off, and on again to

check. Replace outdoor controller circuit board if abnormality is displayed again.

(6607

6608)

Non defined error code

This code is displayed when non defined error code is received.

1 Noise has entered transmission

wire of remote controller.

2 Noise has entered indoor/

outdoor unit connecting wire.

3 Outdoor unit is not inverter

models.

4 Model name of remote

controller is PAR-S25A.

12 Turn the power off, and on again to check.

Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again.

3 Replace outdoor unit with inverter type

outdoor unit.

4 Replace remote controller with MA remote

controller.

Case

(0403)

Serial communication error

Abnormal if serial co

mmunication between outdoor controller circuit board and outdoor power circuit board is d

efective.

1 Breaking of wire or contact

failure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board

2 Breaking of wire or contact

failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board

3 Defective communication circuit

of outdoor power circuit board

4 Defective communication circuit

of outdoor controller circuit board for outdoor power circuit board

12 Check connection of each connector CN2

and CN4 between the outdoor controller circuit board and the outdoor power circuit board.

3 Replace outdoor power circuit board.

4 Replace outdoor controller circuit board.

1 Breaking of wire or contact

failure of connector between outdoor controller circuit board and M-NET board

2 Contact failure of M-NET board

power supply line

3 Noise has entered into M-NET

transmission wire.

2 Abnormal if communication between

outdoor controller circuit board and M-NET board is not available.

Check disconnection, looseness, or breaking of connection wire between outdoor controller circuit board (CNMNT) and M-NET board (CN5).

Check disconnection, looseness, or breaking of connection wire between outdoor controller circuit board (CNMNT) and M-NET board (CND).

3 Check M-NET transmission wiring method.

(6840)

Indoor/outdoor unit communication error (Signal receiving error) (Outdoor unit)

Abnormal if outdoor controller circuit board could not receive anything normally for 3 minutes.

1 Contact failure of indoor/

outdoor unit connecting wire

2 Defective communication circuit

of outdoor controller circuit board

3 Defective communication circuit

of indoor controller board

4 Noise has entered into indoor/

outdoor unit connecting wire.

1 Check disconnection or looseness of indoor/

outdoor unit connecting wire of indoor or outdoor units.

2~4 Turn the power off, and on again to

check. Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again.

Remote controller transmission error (E3)/ signal receiving error (E5)

1 Abnormal if remote controller could not

find blank of transmission path for 6 seconds and could not transmit. (Error code: E3)

2 Remote controller receives transmitted

data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E3)

1 Abnormal if indoor controller board could

not find blank of transmission path. (Error code: E5)

2 Indoor controller board receives

transmitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times. (Error code: E5)

1 Set a remote controller to main, and the

other to sub.

2 Remote controller is connected with only one

indoor unit.

3 The address changes to a separate setting.

4~6 Diagnose remote controller.

a) When “RC OK” is displayed, remote

controllers have no problem. Turn the power off, and on again to check. When becoming abnormal again, replace indoor controller board.

b) When “RC NG” is displayed, replace

remote controller.

When “RC E3” or “ERC 00-66” is displayed, noise may be causing abnormality.

1 2 remote controller are set as

“main.”

(In case of 2 remote controllers)

2 Remote controller is connected

with 2 indoor units or more.

3 Repetition of refrigerant

address

4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

circuit of indoor controller board

6 Noise has entered into

transmission wire of remote controller.

OCH526B

Error Code

Abnormal point and detection method Judgment and action

Case

Freezing/overheating protection is working

Overheating protection <Heating mode>

Abnormal if condensing temperature of 63HS detects Tcond. : or more and compressor operation frequency is less than or equal to 25 Hz. Detection is inoperative during defrosting.

63HS: High pressure sensor

1 Overcharge of refrigerant 2 Defective refrigerant circuit

(clogs)

Malfunction of linear expansion valve

4 Reduced water flow

· Clogged filter

· Leakage of water

5 High temperature

· Over-load

· Inlet water is too warm.

6 Defective water pump * 4~6 is in the case that the unit

is used as Air to water.

12 Check operating condition of refrigerant

circuit.

3 Check linear expansion valve.

45 Check water piping.

6 Check water pump.

Ambient tem perature (TH7)

stage-g

stage-f

stage-e

stage-d

stage-c

stage-b

stage-a

[ ]

Tcond

stage-a stage-b stage-c stage-d stage-e stage-f stage-g

-18 -17 -15 -14 -12 -11 -9 -8 -6 -5 -3 -2

63 62 61 60 59 57 51

Tcond

Slight temperature difference between indoor room temperature and pipe <liquid or condenser/ evaporator> temperature thermistor

• Shortage of refrigerant

• Disconnected holder of pipe <liquid or condenser/ evaporator> thermistor

• Defective refrigerant circuit

2 Converse connection of

extension pipe (on plural units connection)

3 Converse wiring of indoor/

outdoor unit connecting wire (on plural units connection)

4 Defective detection of indoor

room temperature and pipe <condenser / evaporator> temperature thermistor

5 Stop valve is not opened

completely.

Pipe temperature

<Cooling mode> Detected as abnormal when the pipe temperature is not in the cooling range 3 minutes after compressor start and 6 minutes after the liquid or condenser/ evaporator pipe is out of cooling range. Note 1:

It takes at least 9 minutes to detect. Note 2: Abnormality P8 is not detected in drying mode. Cooling range: Indoor pipe temperature

(TH2 or TH5) – room temperature (TH1) [ -3 :

TH: Lower temperature between liquid pipe

temperature and condenser/evaporator temperature

<Heating mode> When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished, the unit is detected as abnormal when condenser/ evaporator pipe temperature is not in heating range within 20 minutes.

Note 3: It takes at least 27 minutes to

detect abnormality.

Note 4: It excludes the period of defrosting

(Detection restarts when defrosting mode is over)

Heating range : 3 : [ (Condenser/

Evaporator temperature(TH5) – room temperature(TH1))

(

1~4

Check pipe <liquid or condenser/evaporator> temperature with room temperature display on remote controller and outdoor controller circuit board.

Pipe <liquid or condenser/ evaporator>

temperature display is indicated by setting SW2 of outdoor controller circuit board as follows.

23 Check converse connection of extension

pipe or converse wiring of indoor/outdoor unit connecting wire.

Conduct temperature check with outdoor controller circuit board after connecting ‘A-Control Service Tool (PAC-SK52ST)’.

1234 56

OFF

123456

OFF

123456

OFF

123456

OFF

A-Control Service Tool SW2 setting

Temperature display of indoor liquid pipe Indoor 1

Temperature display of indoor liquid pipe Indoor 2

Temperature display of indoor condenser/ evaporator pipe Indoor 1

Temperature display of indoor condenser/ evaporator pipe Indoor 2

)

Abnormal refrigerant circuit

During Cooling, Dry, or Auto Cooling

operation, when the following are regarded as failures when detected for one second.

a) The compressor continues to run for 30

or more seconds.

b) The liquid pipe temperature or the

condense/evaporator temperature is 75°C or more.

These detected errors will not be cancelled until the power source is reset.

1 Abnormal operation of 4-way

valve

2 Disconnection of or leakage in

refrigerant pipes

3 Air into refrigerant piping 4 Abnormal operation (no rotation)

of indoor fan

· Defective fan motor.

· Defective indoor control board.

5 Defective refrigerant circuit

(clogging)

1 When this error occurs, be sure to

replace the 4-way valve.

2 Check refrigerant pipes for disconnection or

leakage.

3 After the recovery of refrigerant, vacuum

dry the whole refrigerant circuit.

4 Refer to section 10-6. 5 Check refrigerant circuit for operation.

To avoid entry of moisture or air into

refrigerant circuit which could cause abnormal high pressure, purge air in refrigerant circuit or replace refrigerant.

OCH526B

(6602)

Error Code Abnormal point and detection method Case Judgment and action

(6600)

Address duplicate definition

This error is displayed when transmission from the units of same address is detected. Note: The address and attribute displayed

at remote controller indicate the controller that detected abnormality.

1 There are 2 or more same

address of controller of outdoor unit, indoor unit, FRESH MASTER, or LOSSNAY.

2 Noise has entered into

transmission signal and signal was transformed.

Search the unit with same address as abnormality occurred. If the same address is found, turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more after the address is corrected, and turn the power on again. Check transmission waveform or noise on transmission wire.

Hard ware error of transmission processor

Transmission processor intended to transmit “0”, but “1” appeared on transmission wire. Note: The address and attribute display

at remote controller indicate the controller that detected abnormality.

Error is detected if waveform is transformed when wiring works of transmission wire of outdoor unit, indoor unit, FRESH MASTER or LOSSNAY are done, or polarity is changed with the power on and transmission data collides each other.

Defective transmitting receiving circuit of transmission processor

3 Transmission data is changed

by the noise on transmission.

1 If the works of transmission wire is done

with the power on, turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more, and turn the power on again.

2 Check transmission waveform or noise on

transmission wire.

(6603)

BUS BUSY

Overtime error by signal collision damage

Abnormal if transmitting signal is not

possible for 8-10 minutes continuously because of collision of transmission.

2. Data could not reach transmission wire for 8-10 minutes continuously because of noise or etc.

Note: The address and attribute displayed

at remote controller indicate the controller that detected abnormality.

1 Transmission processor could

not transmit signal because short cycle voltage of noise and the like have entered into transmission wire continuously.

2 Transmission quantity has

increased and transmission of signal is not possible because there was wiring mistake of terminal block for transmission wire (TB3) and terminal block for central control (TB7) in outdoor unit.

3 Transmission are mixed with

others and occupation rate on transmission wire rose because of defective repeater (a function to connector or disconnect transmission of control and central control system) of outdoor unit, then abnormality is detected.

1 Check if transmission wire of indoor unit,

FRESH MASTER, LOSSNAY, or remote controller is not connected to terminal block for central control (TB7) of outdoor unit.

2 Check if transmission wire of indoor unit,

FRESH MASTER or LOSSNAY is not connected to terminal block for transmission wire of outdoor unit.

3 Check if terminal block for transmission wire

(TB3) and terminal block for central control (TB7) is not connected.

4 Check transmission waveform or noise on

transmission wire.

<M-NET communication error>

(Note) “Indoor unit” in the text indicates M-NET board in outdoor unit.

(6606)

Communication error with communication processor

Defective communication between unit processor and transmission processor Note: The address and attribute display

at remote controller indicate the controller that detected abnormality.

1 Data of transmission processor

or unit processor is not transmitted normally because of accidental trouble such as noise or thunder surge.

2 Address forwarding from unit

processor is not transmitted normally because of defective transmission processor hardware.

Turn off the power supply of outdoor unit, indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more, and turn the power on again. System returns normally if abnormality was accidental malfunction. If the same abnormality generates again, abnormalitygenerated controller may be defective.

OCH526B

Error Code Abnormal point and detection method Case Judgment and action

(6607)

NO ACK signal

1. Transmitting side controller detects abnormal if a message was transmitted but there is no reply (ACK) that a message was received. Transmitting side detects abnormality every 30 seconds, 6 times continuously.

Note: The address and attribute displayed

at remote controller indicate the controller that did not reply (ACK).

Common factor that has no relation with abnormality source 1 The unit of former address

does not exist as address switch has changed while the unit was energized.

2 Extinction of transmission wire

voltage and signal is caused by over-range transmission wire.

• Maximum distance

.....

200m

•

Remote controller line

(12m)

3 Extinction of transmission wire

voltage and signal is caused by type-unmatched transmission wire. Type

.....

With shield wire CVVS, CPEVS With normal wire (no shield) VCTF, VCTFK, CVV CVS, VVR, VVF, VCT

Diameter

.....

1.25mm

or more

4 Extinction of transmission wire

voltage and signal is caused by over-numbered units.

5 Accidental malfunction of

abnormality-detected controller (noise, thunder surge)

6 Defective of abnormality-

generated controller

2. If displayed address or attribute is outdoor unit, indoor unit detects abnormality when indoor unit transmits signal to outdoor unit and there was no reply (ACK).

1 Contact failure of transmission

wire of outdoor unit or indoor unit

2 Disconnection of transmission

connector (CN2M) of outdoor unit

3 Defective transmitting receiving

circuit of outdoor unit or indoor unit

Always try the followings when the error “A7” occurs.

1 Turn off the power supply of outdoor

unit, indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more, and turn the power on again. If malfunction was accidental, the unit returns to normal.

2 Check address switch of abnormality-

generated address.

3 Check disconnection or looseness of

abnormality-generated or abnormalitydetected transmission wire (terminal block and connector)

4 Check if tolerance range of transmission

wire is not exceeded.

5 Check if type of transmission wire is correct

or not.

If there were some trouble of 1~5 above, repair the defect, then turn off the power supply of outdoor unit, indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more, and turn the power on again.

• If there was no trouble with 1~5 above in

single refrigerant system (1 outdoor unit), controller of displayed address or attribute is defective.

• If there was no trouble with 1~5 above

in different refrigerant system (2 or more outdoor units), judge with 6.

6 If address of abnormality source is the

address that should not exist, there is the unit that memorizes nonexistent address information. Delete useless address information with manual setting function of remote controller.

Only the system FRESH MASTER or

LOSSNAY are connected to, or the system that is equipped with group setting of different refrigerant system.

If there was no trouble with 1~6 above, replace the controller board of displayed address or attribute. If the unit does not return normally, multi controller board of outdoor unit may be defective (repeater circuit). Replace multi-controller board one by one to check if the unit returns normally.

3. If displayed address or attribute is indoor unit, remote controller detects abnormality when remote controller transmits signal to indoor unit and there was no reply (ACK).

1 During group operation with

indoor unit of multi-refrigerant system, if remote controller transmits signal to indoor unit while outdoor unit power supply of one refrigerant system is turned off or within 2 minutes of restart, abnormality is detected.

2 Contact failure of transmission

wire of remote controller or indoor unit

3 Disconnection of transmission

connector (CN2M) of indoor unit

4 Defective transmitting receiving

circuit of indoor unit or remote controller

Continue to the next page

OCH526B

Error Code Abnormal point and detection method Case Judgment and action

(6607)

5. If displayed address or attribute is FRESH MASTER, indoor unit detects abnormality when indoor unit transmits signal to FRESH MASTER and there was no reply (ACK).

1 During sequential operation

of indoor unit and FRESH MASTER of other refrigerant system, if indoor unit transmits signal to FRESH MASTER while outdoor unit power supply of same refrigerant system with FRESH MASTER is turned off or within 2 minutes of restart, abnormality is detected.

2 Contact failure of transmission

wire of indoor unit or FRESH MASTER

3 Disconnection of transmission

connector (CN2M) of indoor unit or FRESH MASTER

4 Defective transmitting receiving

circuit of indoor unit or FRESH MASTER

6. If displayed address or attribute is LOSSNAY, indoor unit detects abnormality when indoor unit transmits signal to LOSSNAY and there was no reply (ACK).

1 If the power supply of

LOSSNAY is off, indoor unit detects abnormality when it transmits signal to LOSSNAY.

2 During sequential operation

of indoor unit and LOSSNAY of other refrigerant system, if indoor unit transmits signal to LOSSNAY while outdoor unit power supply of same refrigerant system with LOSSNAY is turned off or within 2 minutes of restart, abnormality is detected.

3 Contact failure of transmission

wire of indoor unit of LOSSNAY

4 Disconnection of transmission

connector (CN2M) of indoor unit

5 Defective transmitting

receiving circuit of indoor unit or LOSSNAY

7. If displayed address or attribute is nonexistent.

1 The unit of former address

does not exist as address switch has changed while the unit was energized.

2 Abnormality is detected

when indoor unit transmits signal because the address of FRESH MASTER and LOSSNAY are changed after sequential operation of FRESH MASTER and LOSSNAY by remote controller.

From the previous page.

4. If displayed address or attribute is remote controller, indoor unit detects abnormality when indoor unit transmits signal to remote controller and there was no reply (ACK).

1 During group operation with

indoor unit of multi-refrigerant system, if indoor unit transmit signal to remote controller while outdoor unit power supply of one refrigerant system is turned off or within 2 minutes of restart, abnormality is detected.

2 Contact failure of transmission

wire of remote controller or indoor unit

3 Disconnection of transmission

connector (CN2M) of indoor unit

4 Defective transmitting receiving

circuit of indoor unit or remote controller

Same as mentioned in “A7” of the previous page.

OCH526B

Error Code Abnormal point and detection method Case Judgment and action

(6608)

M-NET NO RESPONSE

Abnormal if a message was transmitted and there were reply (ACK) that message was received, but response command does not return. Transmitting side detects abnormality every 30 seconds, 6 times continuously. Note) The address and attribute displayed

at remote controller indicate the controller that did not reply (ACK).

1 Transmitting condition is

repeated fault because of noise and the like.

2 Extinction of transmission wire

voltage and signal is caused by over-range transmission wire.

• Maximum distance

....

200m

•

Remote controller line

(12m)

3 Extinction of transmission wire

voltage and signal is caused by type-unmatched transmission wire. Type

....

With shield wire CVVS, CPEVS With normal wire (no shield) VCTF, VCTFK, CVV CVS, VVR, VVF, VCT

Diameter

....

1.25mm

or more

4 Accidental malfunction

of abnormality-generated controller

1 Check transmission waveform or noise on

transmission wire.

2 Turn off the power supply of outdoor unit

and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more, and turn the power on again. If malfunction was accidental, the unit returns to normal. If the same abnormality generates again, controller of displayed address and attribute may be defective.

10-5. TROUBLESHOOTING OF PROBLEMS

Phenomena

Factor Countermeasure

1. Remote controller display does not work.

2. “PLEASE WAIT” display is remained on the remote controller.

3. When pressing the remote controller

operation switch, the OPERATION display is appeared but it will be turned off soon.

1 After cancelling to select function from the remote

controller, the remote controller operation switch will be not accepted for approx. 30 seconds.

1 Normal operation

1 At longest 2 minutes after the power supply “PLEASE

WAIT” is displayed to start up.

2 Communication error between the remote controller

and indoor unit

3 Communication error between the indoor and outdoor

unit

4 Outdoor unit protection device connector is open.

1 DC12V is not supplied to remote controller.

(Power supply display

is not indicated on LCD.)

2 DC12~15V is supplied to remote controller, however,

no display is indicated.

• “PLEASE WAIT” is not displayed.

• “PLEASE WAIT” is displayed.

1 Check LED2 on indoor controller board.

(1) When LED2 is lit.

Check the remote controller wiring for breaking or contact failure.

(2) When LED2 is blinking.

Check short circuit of remote controller wiring.

(3) When LED2 is not lit.

Refer to No.3 below.

2 Check the following.

• Failure of remote controller if “PLEASE WAIT” is not displayed

• Refer to No.2 below if “PLEASE WAIT” is displayed.

1 Normal operation

2 Self-diagnosis of remote controller

”PLEASE WAIT” is displayed for 6 minutes at most in case of indoor/outdoor unit communication error. Check LED3 on indoor controller board.

(1) When LED3 is not blinking.

Check indoor/outdoor connecting wire for miswiring. (Converse wiring of S1 and S2, or break of S3 wiring.)

(2) When LED3 is blinking.

Indoor/outdoor connecting wire is normal.

4 Check LED display on outdoor controller

circuit board. Refer to 10-9. Check protection device connector (63L and 63H) for contact failure. Refer to 10-8.

OCH526B

Phenomena

Factor

Countermeasure

7. Remote controller display works normally and the unit performs heating operation, however, the capacity cannot be fully obtained.

1 Linear expansion valve fault

Opening cannot be adjusted well due to linear expansion valve fault.

2 Refrigerant shortage

3 Lack of insulation for refrigerant piping 4 Filter clogging

5 Heat exchanger clogging

6 Air duct short cycle 7 Bypass circuit of outdoor unit fault

1 Discharging temperature and indoor heat

exchanger temperature does not rise.

Inspect the failure by checking discharging pressure.

Replace linear expansion valve.

2 If refrigerant leaks, discharging

temperature rises and LEV opening increases.

Inspect leakage by checking the temperature and opening.

Check pipe connections for gas leakage.

3 Check the insulation. 4

Open suction grille and check the filter. Clean the filter by removing dirt or dust on it.

5 If the filter is clogged, indoor pipe

temperature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pressure. Clean the heat exchanger.

6 Remove the blockage. 7 Check refrigerant system during operation.

8. 1

For 3 minutes after temperature adjuster turns off, the compressor will not start operating even if temperature adjuster is turned on.

For 3 minutes after temperature adjuster turns on, the compressor will not stop operating even if temperature adjuster is turned off. (Compressor stops operating immediately when turning off by the remote controller.)

12 Normal operation

(For protection of compressor)

12 Normal operation

4. Even controlling by the wireless remote controller, no beep is heard and the unit does not start operating. Operation display is indicated on wireless remote controller.

1 The pair number settings of the wireless remote

controller and indoor controller board are mismatched.

1 Check the pair number settings.

5. When operating by the wireless

remote controller, beep sound is heard, however, unit does not start operating.

1 No operation for 2 minutes at most after the power

supply ON.

2 Local remote controller operation is prohibited.

• Remote controlling adaptor is connected to CN32 on the indoor controller board.

• Local remote controller operation is prohibited by centralised controller etc. since it is connected to MELANS.

3 Factor of No.2.

1 Normal operation

2 Normal operation

3 Check the phenomena of No.2.

6. Remote controller display works normally and the unit performs cooling operation, however, the capacity cannot be fully obtained. (The air does not cool well.)

1 Refrigerant shortage

2 Filter clogging

3 Heat exchanger clogging

4 Air duct short cycle

1 If refrigerant leaks, discharging

temperature rises and LEV opening increases. Inspect leakage by checking the temperature and opening. Check pipe connections for gas leakage.

Open suction grille and check the filter. Clean the filter by removing dirt or dust on it.

3 If the filter is clogged, indoor pipe

temperature rises and discharging pressure increases. Check if heat exchanger is clogged by inspecting discharging pressure.

• Clean the heat exchanger.

4 Remove the blockage.

OCH526B

•

If the unit cannot be operated properly after test run, refer to the following table to find the cause.

Symptom

Cause

Wired remote controller LED 1, 2 (PCB in outdoor unit)

PLEASE WAIT

PLEASE WAIT → Error code

Display messages do not appear even when operation switch is turned ON (operation lamp does not light up).

For about 2 minutes after power-on

Subsequent to about 2 minutes after power-on

After LED 1, 2 are lighted, LED 2 is

turned off, then only LED 1 is

Only LED 1 is lighted. →

LED 1, 2 blink.

Only LED 1 is lighted.

→

LED 1 blinks twice, LED 2 blinks once.

•

For about 2 minutes following power-on,operation of the remote controller is not possible due to system start-up. (Correct operation)

• Connector for the outdoor unit’s protection device is not connected.

• Reverse or open phase wiring for the outdoor unit’s power terminal block (L1, L2, L3)

• Incorrect wiring between FTC and outdoor (incorrect polarity of S1, S2, S3)

• Remote controller wire short

Note: Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)

For description of each LED (LED1, 2, 3) provided on the FTC, refer to the following table.

LED1 (power for microprocessor) Indicates whether control power is supplied. Make sure that this LED is always lit.

LED2 (power for remote controller) Indicates whether power is supplied to the remote controller.

This LED lights only in the case of the FTC which is connected to the outdoor unit refrigerant addresses “0”.

LED3 (communication between FTC and outdoor units) Indicates state of communication between the FTC and outdoor units.

Make sure that this LED is always blinking.

lighted.

(Correct operation)

Phenomena Countermeasure

A ﬂ owing water sound or occasional hissing sound is heard.■ These sounds can be heard when refrigerant and/or water is (are) ﬂ owing

in the indoor unit or refrigerant pipe, or when the refrigerant and/or water is (are) chugging.

Water does not heat or cool well.

■

Clean the filter of water piping. (Flow is reduced when the filter is dirty or

clogged.)

■

Check the temperature adjustment and adjust the set temperature.

■

Make sure that there is plenty of space around the outdoor unit.

Water or vapour is emitted from the outdoor unit.

■

During cooling mode, water may form and drip from the cool pipes and joints.

■

During heating mode, water may form and drip from the heat exchanger

of outdoor unit.

■

During defrosting mode, water on the heat exchanger of outdoor unit

evaporates and water vapour may be emitted.

The operation indicator does not appear in the remote controller display.

■

Turn on the power switch. “

” will appear in the remote controller display.

“

” appears in the remote controller display.

■

During external signal control, “ ” appears in the remote controller dis-

play and FTC operation cannot be started or stopped using the remote controller.

When restarting the outdoor unit soon after stopping it, it does not operate even though the ON/OFF button is pressed.

■

Wait approximately 3 minutes. (Operation has stopped to protect the out-

door unit.)

FTC operates without the ON/OFF button being pressed.

■

Is the on timer set?

Press the ON/OFF button to stop operation.

■

Is the FTC connected to a external signal?

Consult the concerned people who control the FTC.

■

Does “

” appear in the remote controller display?

Consult the concerned people who control the FTC.

■

Has the auto recovery feature from power failures been set?

Press the ON/OFF button to stop operation.

FTC stops without the ON/OFF button being pressed.

■

Is the off timer set?

Press the ON/OFF button to restart operation.

■

Is the air conditioner connected to a central remote controller?

Consult the concerned people who control the FTC.

■

Does “

” appear in the remote controller display?

Consult the concerned people who control the FTC.

Remote controller timer operation cannot be set.

■

Are timer settings invalid?

If the timer can be set,

WEEKLY

SIMPLE

, or

AUTO OFF

appears in the

remote controller display.

“PA WAIT” appears in the remote controller display.

■

The initial settings are being performed. Wait approximately 3 minutes.

■

If the remote controller is not only for FTC, change it.

An error code appears in the remote controller display.

■

The protection devices have operated to protect the FTC and outdoor unit.

■

Do not attempt to repair this euipment by yourself.

Turn off the power switch immediately and consult your dealer. e sure to

provide the dealer with the model name and information that appeared in the remote controller display.

OCH526B

How long is “PLEASE WAIT”

kept being displayed on the

remote controller?

6 minutes or more

2 minutes or less

2 to 6 minutes

YES

Are any error codes

displayed on the

remote controller?

Are any error codes

displayed on the LED?

Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller.

Check the display time of “PLEASE WAIT” after turning on the main power.

•

“PLEASE WAIT” will be displayed during the start-up

diagnosis after turning

on the main power.

• Normal. The start-up diagnosis will

be over in around 2 minutes.

• Miswiring of indoor/ outdoor connecting wire

• Breaking of indoor/ outdoor connecting wire (S3)

• Defective indoor controller board

• Defective outdoor controller circuit board

• Refer to “Self-diagnosis action table” in order to solve the trouble.

• In case of communication errors, the display of remote controller may not match the LED display of the outdoor unit.

• Defective indoor controller board

• Defective remote controller

Check the LED display of the outdoor controller circuit board.

Diagnosis flow Cause

Inspection method and troubleshooting

OCH526B

AC 198V to AC 264V?

DC 12V to DC 16V?

YES

Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.

Check the voltage among L(L3) and N on the terminal block (TB1) of the outdoor power circuit board.

Check the voltage of indoor controller board (CN2D).

Check the voltage of the unit after removing the indoor power board (CN2S).

Check the voltage between S1 and S2 on the terminal block (TB1) of the outdoor unit which is used to connect the indoor unit and the outdoor unit.

•

Troubles concerning power supply

• Check the power wiring to the outdoor unit.

• Check the breaker.

• Bad wiring of the outdoor controller board

• The fuses on the outdoor controller circuit board are blown.

• Check the wiring of the outdoor unit.

• Check if the wiring is bad. Check if the fuses are blown.

The fuses on the outdoor controller circuit board will be blown when the indoor /outdoor connecting wire short-circuits.

• Bad wiring of the outdoor controller board

• The fuses on the outdoor controller circuit board are blown.

• Check if miswiring, breaking

or poor contact is causing this problem. Indoor/outdoor connecting wire is polarized 3-core type. Connect the indoor unit and the outdoor unit by wiring each pair of S1, S2 and S3 on the both side of indoor/outdoor terminal blocks.

• Defective indoor power board

• Replace the indoor power board.

• Defective indoor controller board

• Replace the indoor controller board.

• Miswiring, breaking or poor connection of in door/outdoor connecting wire

•

Check if there is miswiring

or breaking of wire.

Symptoms: Nothing is displayed on the remote controller 

Diagnosis flow Cause

Inspection method and

troubleshooting

LED display of the indoor

controller board

LED1 :

LED2 :

LED3 :

OCH526B

AC 198V to AC 264V?

Are there looseness or

disconnection of the indoor/

outdoor connecting wire?

Is anything displayed?

DC 17V to DC 28V?

Is “E8” displayed?

Can all the indoor

unit be operated?

Check the voltage between S2 and S3 on the terminal block of the outdoor unit.

YES

Not lighting.

Blinking.

YES

Not displayed.

Displayed.

YES

Check the voltage between S1 and

S2 on the terminal block (TB4)

of the

indoor unit which is used to connect the indoor unit and the

outdoor unit.

Check the refrigerant address of the outdoor unit. (SW1-3 to 1-6)

Check the looseness or disconnection of the indoor/outdoor connecting wire.

Check the LED display of the outdoor unit after turning on the main power again.

Can the unit be restarted?

• Breaking or poor contact of the indoor/ outdoor connecting wire

• Fix the breaking or poor

contact of the indoor/outdoor

connecting wire.

• Defective outdoor controller circuit board

• Replace the outdoor controller circuit board.

• Normal Only the unit which has the refrigerant address “0” supplies power to the remote controller

• Set the refrigerant address to “0”. In case of the multiple grouping system, recheck the refrigerant address again.

• Defective indoor power board

• Replace the indoor power board.

• Defective outdoor power circuit board

• Replace the outdoor power circuit board.

• Defective indoor controller board

•

Replace the indoor controller

board of the indoor unit which

does not operate.

• Defective outdoor controller circuit board

• Replace the outdoor controller circuit board.

• Influence of electromagnetic noise

• Not abnormal.

There may be the influence

of electromagnetic noise.

Check the transmission wire

and get rid of the causes.

Symptoms: Nothing is displayed on the remote controller 

Diagnosis flow Cause

Inspection method and

troubleshooting

LED display of the indoor

controller board

LED1 :

LED2 :

LED3 : or

Check the status of the indoor controller board LED3 display.

Is the refrigerant address “0”?

YES

Is “EA” or “Eb” displayed?

OCH526B

DC 10V to DC 16V?

YES

Lighting

Blinking

Lighting

Blinking

Check the voltage of the terminal block (TB6) of the remote controller.

Check the status of the LED2 after disconnecting the remote controller wire from the terminal block (TB5) of the indoor unit.

• Defective remote controller

• Replace the remote controller.

• Breaking or poor contact of the remote controller wire

• Check if there is breaking or poor contact of the remote controller wire. Check the voltage of the terminal block (TB5) connecting the remote controller wire.

If it is not between DC 10V and DC16V, the indoor controller board must be defective.

• The remote controller wire short-circuits

• Check if the remote controller wire is short-circuited.

• Defective indoor controller board

• Replace the indoor controller board.

Diagnosis flow Cause

Inspection method and troubleshooting

Symptoms: Nothing is displayed on the remote controller 

LED display of the indoor controller board LED1 : LED2 : or LED3 : —

Check the status of the LED2.

OCH526B



The operating display of remote

controller does not come on.

Phone Calls From Customers How to Respond Note

 Check if power is supplied to air conditioner. Nothing appears on the display unless power is supplied.

 Unit cannot be restarted for a while after it has stopped.

 Wait around 3 minutes to restart unit. The air conditioner is in a state of being protected by the microcomputer’s directive. Once the compressor is stopped, the unit cannot be restarted for 3 minutes. This control is also applied when the unit is turned on and off by remote controller.

 Error code appears and blinks on the display of remote controller.

Refer to “SELF-DIAGNOSIS ACTION TABLE”. Check if servicing is required for the error.

Display time of “FILTER” depends on the model. Long life filter: 2500 hrs. Regular filter: 100 hrs.

 Error code will be displayed if any protection devices of the air conditioner are actuated. What is error code?



“PLEASE WAIT” is displayed

on the screen.

 Wait around 2 minutes. An automatic startup test will be conducted for 2 minutes when power is supplied to the air conditioner. “PLEASE WAIT” will be kept being displayed while that time.



“FILTER” is displayed on the

screen.

 This indicates that it is time to clean the air filters. Clean the air filters. Press the FILTER button on the remote controller twice to clear “FILTER” from the display. See the operation manual that came with the product for how to clean the filters.



“STANDBY” is displayed on the

screen.

 This is displayed when the unit starts HEAT operation, when the thermostat puts the compressor in operation mode, or when the outdoor unit ends DEFROST operation and returns to HEAT operation. The display will automatically disappear around 10 minutes later. While “STANDBY” is displayed on the remote controller, the airflow amount will be restricted because the indoor unit’s heat exchanger is not fully heated up. In addition to that, the up/down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body. The up/down vane will return to the setting specified by the remote controller when “STANDBY” is released.



“DEFROST” is displayed on the screen. (No air comes out of the unit.)

 The outdoor unit gets frosted when the outside temperature is low and the humidity is high. “DEFROST” indicates the DEFROST operation is being performed to melt this frost. The DEFROST operation ends in around 10 minutes (at most 15 minutes). During the DEFROST operation, the indoor unit’s heat exchanger becomes cold, so the fan is stopped. The up/down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body. The display will turn into “STANDBY” when DEFROST operation ends.

Unit does not operate at all.

Remote controller

• Before repair Frequent calling from customers

OCH526B

Phone Calls From Customers How to Respond Note

 Check the set temperature of remote controller. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature. HEAT: When the set temperature is higher than the room temperature.

 Check if filters are not dirty and clogged. If filters are clogged, the airflow amount will be reduced and the unit capacity will be lowered. See the instruction manual that came with the product for how to clean the filters.

 Check there is enough space around the air conditioner. If there are any obstacles in the air intake or air outlet of indoor/outdoor units, they block the airflow direction so that the unit capacity will be lowered.



A gas escaping sound is heard

sometimes.

 This is not a malfunction. This is the sound which is heard when the flow of refrigerant in the air conditioner is switched.



A cracking sound is heard

sometimes.

 This is not a malfunction. This is the sound which is heard when internal parts of units expand or contract when the temperature changes.



A buzzing sound is heard

sometimes.

 This is not a malfunction. This is the sound which is heard when the outdoor unit starts operating.



A ticking sound is heard from

the outdoor unit sometimes.

 This is not a malfunction. This is the sound which is heard when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition.



A sound, similar to water

flowing, is heard from the unit.

 This is not a malfunction. This is the sound which is heard when the refrigerant is flowing inside the indoor unit.



The fan speed does not match the setting of the remote controller in HEAT operation.

The up/down vane will be automatically set to horizontal blow in these cases listed up on the left (1)~3)). After a while, the up/down vane will be automatically moved according to the setting of the remote controller.

 This is not a malfunction.

1) When the HEAT operation starts, to prevent the unit from blowing cold air, the fan speed is gradually increased from zero to the set speed, in proportion to the temperature rise of the discharged air.

2) When the room temperature reaches the set temperature and the outdoor unit stops, the unit starts the LOW AIR operation.

3) During the HEAT operation, the DEFROST operation is performed to defrost the outdoor unit. During the DEFROST operation, the blower is stopped to prevent cold air coming out of the indoor unit.

Sound comes out from the air conditioner.



The fan speed does not match the setting of the remote controller during DRY operation.(No air comes out sometimes during DRY operation.)

 This is not a malfunction.

During the DRY operation, the blower’s ON/OFF is controlled by the microprocessor to prevent overcooling and to ensure efficient dehumidification. The fan speed cannot be set by the remote controller during DRY operation.

Something is wrong with the blower…..

The room cannot be cooled or heated sufficiently.

OCH526B



Air blows out for a while after

HEAT operation is stopped.

Phone Calls From Customers How to Respond Note

 This is not a malfunction. The blower is operating just for cooling down the heated-up air conditioner. This will be done within 1 minute. This control is conducted only when the HEAT operation is stopped with the electric heater ON.

However, this control is also applied to the models which has no electric heater.

“STANDBY” will be displayed on the remote controller in case of 1) and 2). “DEFROST” will be displayed on the screen in case of 3).



The airflow direction is changed

during COOL operation.

 If the up/down vane is set to downward in COOL operation, it will be automatically set to horizontal blow by the microprocessor in order to prevent water from dropping down. “1 Hr.” will be displayed on the remote controller if the up/down vane is set to downward with the fan speed set to be less than “LOW”.



The airflow direction is changed during HEAT operation. (The airflow direction cannot be set by remote controller.)

 In HEAT operation, the up/down vane is automatically controlled according to the temperature of the indoor unit’s heat exchanger. In the following cases written below, the up/down vane will be set to horizontal blow, and the setting cannot be changed by remote controller.

1) At the beginning of the HEAT operation

2) While the outdoor unit is being stopped by thermostat or when the outdoor unit gets started to operate.

3) During DEFROST operation The airflow direction will be back to the setting of remote controller when the above situations are released.



The airflow direction does not change. (Up/down vane, left/right louver)

1) Check if the vane is set to a fixed position. (Check if the vane motor connector is removed.)

2) Check if the air conditioner has a function for switching the air direction.

3) If the air conditioner does not have that function, “NOT AVAILABLE” will be displayed on the remote controller when “AIR DIRECTION” or “LOUVER” button is pressed.

Something is wrong with the blower…..

Something is wrong with the airflow direction….

 Check if you set ON/OFF timer. The air conditioner starts operating at the time designated if ON timer has been set before.

 Check if any operations are ordered by distant control system or the central remote controller. While “CENTRALLY CONTROLLED INDICATOR” is displayed on the remote controller, the air

conditioner is under the control of external directive.

The air conditioner starts operating even though any buttons on the remote controller are not pressed.

 Check if you set ON/OFF timer. The air conditioner stops operating at the time designated if OFF timer has been set before.

The air conditioner stops even though any buttons on the remote controller are not pressed.

There might be a case that “CENTRALLY CONTROLLED

INDICATOR

” will not be

displayed.

There might be a case that “CENTRALLY CONTROLLED INDICATOR” will not be displayed.

 Check if power is recovered from power failure (black out). The units will automatically start operating when power is recovered after power failure (black out) occurs. This function is called “power failure automatic recovery ”.



Check if any operations are ordered by distant control system or the central remote controller. While “CENTRALLY CONTROLLED INDICATOR” is displayed on the remote controller, the air conditioner is under the control of external directive.

OCH526B

Phone Calls From Customers How to Respond Note

This is not a malfunction. This may occur when the operation gets started in the room of high humidity.

A white mist is expelled from the indoor unit.

Cooling: when pipes or piping joints are cooled, they get sweated and water drips down. Heating: water drips down from the heat exchanger. * Make use of optional parts “Drain Socket” and “Drain pan” if these water needs to be recovered and drained out for once.

Water or moisture is expelled from the outdoor unit.

Batteries are being exhausted. Replace them and press the reset button of remote controller.

The display of wireless remote controller gets dim or does not come on. The indoor unit doesn’t receive a signal from remote controller at a long distance.

OCH526B

1 2 3 4 5

Gray Orange

Red Yellow

Black

Parts name

Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10 :-30 :)

Thermistor (TH3) <Liquid>

Thermistor (TH4) <Discharge>

Thermistor (TH6) <

2-phase pipe

Thermistor (TH7) <Ambient>

Thermistor (TH8) <Heatsink> *SHW112/140YHA only

Thermistor (TH32) <Suction>

Thermistor (TH33) <Ref. check>

Thermistor (TH34) <Comp. surface>

Normal

160 k" - 410 k"

4.3 k" - 9.6 k"

39 k" - 105 k"

TH4 TH3 TH6

TH7 TH32 TH33 TH34

TH8

Abnormal

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 20

)

Solenoid valve coil <Four-way valve> (21S4)

Motor for compressor (MC)

Linear expansion valve (LEV-A/LEV-B/LEV-C)

Normal

Abnormal

Open or short

Disconnect the connector then measure the resistance with a tester. (Winding temperature 20 :)

Normal

Gray - Black Gray - Red

Gray - Yellow

Gray - Orange

Abnormal

46 ± 3"

Open or short

Measure the resistance between the terminals with a tester. (At the ambient temperature 20:)

Solenoid valve coil <Bypass valve> (SV)

Refer to next page.Fan motor

(MF1,MF2)

112/140YHA(R1)80/112VHA

0.188 " 0.302 "

112/140YHAR2

0.305 "

Measure the resistance between the terminals with a tester. (Winding temperature 20

)

Normal

Abnormal

Open or short

Normal

Abnormal

Open or short

1435 i 150 "

1197 ± 10 "

10-6. HOW TO CHECK THE PARTS PUHZ-SHW80VHA PUHZ-SHW112VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

OCH526B

Notes

· High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service.

· Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit

board and fan motor.)

Self check Symptom: The outdoor fan cannot turn around.

Check method of DC fan motor (fan motor / outdoor controller circuit board)

Wiring contact check

Contact of fan motor connector (CNF1, 2)

Fuse check

Check the fuse (F5) on outdoor controller board.

Power supply check (Remove the connector (CNF1, 2))

Measure the voltage in the outdoor controller circuit

board.

TEST POINT

1 : VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC280~380V

TEST POINT 2 : VCC (between 5 (+) and 4 (-) of the fan connector): VCC DC15V

Recover wiring.

Replace outdoor controller board.

Replace the fan motor.

Replace outdoor controller board (C.B) and fan motor (MF1, 2).

Replace outdoor

controller board.

Replace the fan motor.

Is the voltage normal?

Is there contact failure?

Yes

Did the fuse blow?

Yes

Check the operation of fan. END

Yes

Check the operation. END

10-7. HOW TO CHECK THE COMPONENTS

0.5

2.5 5

2.5

4.5

Vout (V)

PRESSURE (MPa)

WHT

BLU

BLK

SENSOR

5V DC

GND

63HS

Vout

MICRO PROCESSOR

MULTI CONTROLLER BOARD

- : 5V (DC) - : Output Vout (DC)

OCH526B

Low temperature thermistors

• Thermistor <Liquid> (TH3)

• Thermistor <2-phase pipe> (TH6)

• Thermistor <Ambient> (TH7)

• Thermistor <Suction> (TH32)

• Thermistor <Ref. check> (TH33)

0 : 15 k" 10 : 9.6 k" 20 : 6.3 k" 25 : 5.2 k"

0 : 180 k" 25 : 50 k" 50 : 17 k" 70 : 8 k" 90 : 4 k"

30: 4.3 k" 40: 3.0 k"

Thermistor R0 = 15 k" ± 3 % B constant = 3480 ± 2 %

t =15exp{3480(

273+t – 273

)}

1 1

Thermistor R50 = 17 k" ± 2 % B constant = 4150 ± 3 %

Rt =17exp{4150(

273+t – 323

)}

Thermistor R120 = 7.465 k" ± 2 % B constant = 4057 ± 2 %

t =7.465exp{4057(

273+t – 393

)}

Medium temperature thermistor

• Thermistor <Heatsink> (TH8) *SHW112/140YHA only

20 : 250 k" 30 : 160 k" 40 : 104 k" 50 : 70 k" 60 : 48 k"

70 : 34 k" 80 : 24 k" 90 : 17.5 k" 100 : 13.0 k" 110 : 9.8 k"

High temperature thermistor

• Thermistor <Discharge> (TH4)

• Thermistor <Comp. surface> (TH34)

-20-100 1020304050

Temperature ()

Resistance (k)

200

150

100

25 50 75 100 125

Temperature ()

Resistance (k)

500

400

300

200

100

50 75 100 120

Temperature ()

Resistance (k)

OCH526B

(2) Linear expansion valve operation







Open

Extra tightening (about 32 pulse)

Pulse number

500 pulse Opening a valve all the way

Valve position (capacity)

Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8 Closing a valve : 1 → 2 →3 → 4 → 5 → 6 → 7 → 8 → 1 The output pulse shifts in above order.

· When linear expansion valve operation stops, all output phase become OFF.

· When the switch is turned on, 700 pulse closing valve signal will be sent till it goes to

A point in order to define the valve position.

(The pulse signal is being sent for about 20 seconds.)

When the valve moves smoothly, there is no sound or vibration

occurring from the linear expansion valve : however, when the pulse number moves from B to A or when the valve is locked, sound can be heard.

No sound is heard when the pulse number moves from

B to A in

case coil is burnt out or motor is locked by open-phase.

· Sound can be detected by placing the ear against the screw driver handle while putting the screw driver to the linear expansion valve.

LEV

Gray

Orange

Red

Yellow

Black

Connector LEV-A

DC12V

Outdoor controller board

Drive circuit

LEV-B LEV-C

Linear expansion valve

(1) Operation summary of the linear expansion valve

• Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller board.

• Valve position can be changed in proportion to the number of pulse signal. <Connection between the outdoor controller board and the linear expansion valve>

OFF

Output

(Phase)

Output

234

5678

OFF

OCH526B

Main body

Lead wire

Stopper

Coil

Be sure to attach the stopper.

(3) How to attach and detach the coil of linear expansion valve

<Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below.

Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward. Be sure to detach the coil holding main body firmly. Otherwise pipes can bend due to pressure.

Hold the lower part of the main body (shown as A) firmly so that the main body does not move and attach the coil by inserting it downward into the main body. Then securely attach the coil stopper to main body. (At this time, be careful that stress is not added to lead wire and main body is not wound by lead wire.) If the stopper is not firmly attached to main body, coil may be detached from the main body and that can cause defective operation of linear expansion valve. To prevent piping stress, be sure to attach the coil holding the main body of linear expansion valve firmly. Otherwise pipe may break.

OCH526B

10-8. EMERGENCY OPERATION

(1) When the error codes shown below are displayed on outdoor unit or microprocessor for wired remote controller or indoor

unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency operation switch (SWE) on indoor controller board to ON and short-circuiting the connector (CN31) on outdoor controller board.

(2) Check the following items and cautions for emergency operation

1 Make sure that there is no abnormality in outdoor unit other than the above abnormalities. (Emergency operation will not

be available when error code other than the above are indicated.)

2 For emergency operation, it is necessary to set the emergency operation switch (SWE) on indoor controller board. Refer

to the electrical wiring diagram of indoor unit for how to set the indoor unit.

3 During emergency operation, the air-conditioner will continuously be operated by supplying power and stopping it: It can

not be turned on or off by remote control, and temperature control is not possible.

4 Do not perform emergency heating operation for an extended period of time: If the outdoor unit starts defrosting during

this period, cold air will blow out from the indoor unit.

5 Do not perform emergency cooling operation for more than 10 hours: Neglecting this could result in freezing the heat

exchanger in indoor unit.

(3) Emergency operation procedure

1 Turn the main power supply off. 2 Turn on the emergency operation switch (SWE) on indoor controller board. 3 Set the shorting pins of emergency operation connector (CN31) on outdoor controller board to ON. 4 Use SW4-2 on outdoor controller board to set the operation mode (cooling or heating). (SW4-1 is not used.)

5 Turning the main power supply on will start the emergency operation.

(4) Releasing emergency operation

1 Turn the main power supply off. 2 Set the emergency operation switch (SWE) on indoor controller board to OFF. 3 Set the shorting pins of emergency operation connector (CN31) on outdoor controller

board to OFF.

4 Set SW4-2 on outdoor controller board as shown in the right.

Note: If shorting pins are not set on emergency operation connector (CN31), the setting remains OFF.

SW4

1 2 Cooling

Heating

SW4

1 2 Cooling

Heating

OFF

CN31

Shorting pins

Inspected content

Open/short of pipe thermistors (TH3/TH6/TH7/TH32/TH33/TH8)

Open of pressure sensor (T63HS)

Indoor/outdoor unit communication error •Signal receiving error (Outdoor unit)

Indoor/outdoor unit communication error •Transmitting error (Indoor unit)

Communication error other than outdoor unit

Communicaiton error between outdoor controller board and M-NET board (Serial communication error)

Error code

E0 ~ E7

LWhen following abnormalities occur, emergency operation will be available.

OCH526B

(5) Operation data during emergency operation

During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values:

Operation data

Intake temperature (TH1) Indoor pipe temperature (TH2) Indoor 2-phase pipe temperature (TH5) Set temperature Pressure saturation temperature (T

63HS

) Liquid temperature (TH3) Discharge pipe temperature (TH4) 2-phase pipe temperature (TH6) Ambient temperature (TH7) Temperature difference code (intake temperature - set temperature) (Tj) Discharge superheat (SHd) Sub-cool (SC)

Operation mode

COOL

27 :

5 :

5 : 25 : 50 : 45 : 80 : 50 : 35 :

30deg

5deg

HEAT

20.5 : 45 : 50 : 22 : 50 :

5 :

80 :

5 : 7 :

30deg

5deg

(*1) (*1) (*1) (*1) (*1)

(*2) (*2)

Remarks

*1: If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data. When the unit enters emergency operation and TH values are mismatched, set the thermistors to open/short. And the unit runs emegency operation with the values listed above. *2: If one thermistor is set to open/short, the values for each will be different from the list above.

[Example] When liquid pipe temperature thermistor (TH3) has an open or short circuit.

COOL

45 :

5 : 5 :

HEAT

5 :

50 : 45 :

Thermistor

TH3

TH6

TH4

TH5 TH2

63HS

Regard normal figure as effective data.

— — — —

—

Discharge superheat (SHd) Cooling = TH4 - T

63HS

= Tc - Te

Heating = TH4 - T

63HS

= Td - Tf

Degree of subcooling (SC) Cooling = T

63HS

- TH3 = Te - 45

Heating = T

63HS

- TH2 = Tf - 45

Regard normal figure as effective data.

OCH526B

CNS

S1-S2: 230V AC

CNAC

2 to 4: Power supply for outdoor noise filter circuit board (230V AC) 1 to 3: Power supply for indoor and outdoor unit connection wire (230V AC)

CNF1, CNF2 Connect to the fan motor

1-4: 280 - 380V DC 5-4: 15V DC 6-4: 0-6.5V DC 7-4: 15V DC(When stopped)

7.5V DC(When operated) (0V-15V pulse)

21S4

Four-way valve

63H

High pressure switch

SV2

Bypass valve

CN4

Transmission to outdoor power circuit board (CN4)

SW4

Test operation

SW6

Model select

SW5

Function switch

SW1

Manual defrost, detect history record reset, refrigerant address

CNDM

1 to 2:

Input of low-level sound priority mode

1 to 3: Input of external contact point

TH4

Thermistor <Discharge>

TH3

Thermistor <Liquid>

TH7/6

Thermistor <Ambient/ 2-phase pipe>

CNDC

280V - 380 DC (1+, 3-) (Outdoor power circuit board for SHW80,112V) (Noise filter circuit board for SHW112,140Y)

VFG

(Voltage between right pins of PC5C and PC5D, pin 3 and pin 4) (Same as

(CNF1

7(+)-4(-))

VSP

(Voltage between pins of C5A, C5B): DC 0V(when stopped), DC 1– 6.5V (when operated)

SW7

Demand control setting

CN51

External signal output

• Compressor operating signal

• Abnormal signal

LEV-A,B,C

Linear expansion valve

SWP

Pump down

SW8

Pipe replace Wiring replace

CNM

Connect to A control service tool

CNMNT

Connect to M-NET adapter(CN5)

CNVMNT

Connect to M-NET adapter(CND)

CN2

Connect to the outdoor power circuit board (CN2) 1-5: Reception from

power circuit board

2-5: Zero cross signal (0-5V DC) 3-4: Not used (SHW112,140Y)

18V DC (SHW80,112V)

6-5: 16V DC 7-5: 16V DC

CN52C

Connect to the power circuit board (SHW80, 112V)

10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUHZ-SHW80VHA PUHZ-SHW112VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

TH32

Thermistor <Suction>

63L

Low pressure switch

63HS

Pressure sensor

SV1

Drain hose heater output

SW9

Function switch

<CAUTION> TEST POINT1 is high voltage.

TH33

Thermistor <Ref. check>

OCH526B

Outdoor noise filter circuit board PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK

LI1, LI2, LI3, NI POWER SUPPLY

LI1-LI2/LI-LI3/LI3-LI1 : AC400V input LI1-NI/LI2-NI/LI3-NI : AC230V input (Connect to the terminal block (TB1))

GD1

Connect to the earth

CNAC2 AC230V

(Connect to the outdoor controller circuit board (CNAC))

CNDC

(Connect to the outdoor controller circuit board (CNDC))

LO1, LO2, LO3 POWER SUPPLY

LO1-LO2/LO2-LO3/LO3-LO1 : AC400V OUTPUT (Connect to the outdoor converter circuit board (L1-IN, ACL2, ACL3))

CNCT Primary current

(Connect to the outdoor power circuit board (CN5))

CNL Connect to the ACL4

GD3

Connect to the earth

NO Connect to the outdoor converter circuit board (N-IN)

OCH526B

Outdoor power circuit board PUHZ-SHW80VHA PUHZ-SHW112VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK

CNAC1, CNAC2

230 V AC Connect to the outdoor controller circuit board (CNAC)

NI, LI

Voltage of 230 V AC is input (Connect to the terminal block (TB1))

EI, E4

Connect to the earth

DCL1, DCL2

Connect to DCL

Connect to the smoothing capacitor CB +

U/V/W

Connect to the compressor (MC) Voltage among phases: 10 V-180 V AC

CNDC

280-380 V DC (1+, 3-) Connect to the outdoor controller circuit board (CNDC)

E2, E3

Connect to the earth

CN52C

52C driving signal Connect to the outdoor controller circuit board (CN52C)

CN2 Connect to the outdoor controller circuit board (CN2) 1-5: Transmitting signal to outdoor controller circuit board (0-5 V DC) 2-5: Zero cross signal (0-5 V DC) 3-4: 18 V DC 6-5: 16 V DC 7-5: 16 V DC

Connect to the smoothing capacitor CB -

CN4 Connect to the outdoor controller circuit board (CN4)

Brief Check of POWER MODULE

•

Usually, they are in a state of being short-circuited if they are broken.Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.

1. Check of POWER MODULE 1 Check of DIODE circuit

R - L1 , S - L1 , R - N1 , S - N1 2 Check of IGBT circuit L2 - N1 3 Check of INVERTER circuit P - U , P - V , P - W , N1 - U , N1 - V , N1 - W

Power module

Note: The marks R , S , L1 , L2 , P , N1 , U , V and W

shown in the diagram are not actually printed on the board.

S R

W V U L2 P N1 L1

OCH526B

Outdoor power circuit board PUHZ-SHW112YHA PUHZ-SHW140YHA

Brief Check of POWER MODULE * Usually, they are in a state of being short-circuited if they are broken.

Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.

1. Check of DIODE MODULE L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1

2. Check of DIP-IPM P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W

Note: The marks L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W

shown in the diagram are not actually printed on the board.

CN5

Detection of primary current (Connect to the outdoor noise filter circuit board (CNCT))

CN4

Connect to the outdoor controller circuit board (CN4)

CN2 Connect to the outdoor controller circuit board (CN2) 1-5: Power circuit board

→ Transmitting

signal to the controller board (0-5V DC)

2-5: Zero cross signal (0-5V DC) 3-4: Not used 6-5: 16V DC 7-5: 16V DC

[ 5 : – 1, 2, 6, 7 : + ]

TB-L1, TB-L2, TB-L3

Connect to the outdoor converter circuit board (L1-OU, L2-OU, L3-OU) 400V AC

CN7

Connect to the outdoor converter circuit board (CN7)

TB-U, TB-V, TB-W

Connect to the compressor (MC) Voltage among phases: 10V-400V AC

TB-N

Connect to the CK capacitor

Diode module

U P2VW

L3 N1L1P1 L2

DIP-IPM

TAB connector on X52CA

Connect to the RS resistor

CN6

Thermistor <Heat sink> (TH8)

OCH526B

Outdoor power circuit board PUHZ-SHW112YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK

Brief Check of POWER MODULE * Usually, they are in a state of being short-circuited if they are broken.

Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.

1. Check of DIODE MODULE L1 - P1 , L2 - P1 , L3 - P1 , L1 - N1 , L2 - N1 , L3 - N1

2. Check of DIP-IPM P2 - U , P2 - V , P2 - W , N2 - U , N2 - V , N2 - W

Note: The marks L1 , L2 , L3 , N1 , N2 , P1 , P2 , U , V and W

shown in the diagram are not actually printed on the board.

CN5

Detection of primary current (Connect to the outdoor noise filter circuit board (CNCT))

CN4

Connect to the outdoor controller circuit board (CN4)

CN2 Connect to the outdoor controller circuit board (CN2) 1-5: Power circuit board

→ Transmitting

signal to the controller board (0-5V DC)

2-5: Zero cross signal (0-5V DC) 3-4: Not used 6-5: 16V DC 7-5: 16V DC

[ 5 : – 1, 2, 6, 7 : + ]

CN7

Connect to the outdoor converter circuit board (CN7)

TB-U, TB-V, TB-W

Connect to the compressor (MC) Voltage among phases: 10V-400V AC

TB-N

Connect to the CK capacitor

Diode module

U P2VW

L3 N1L1P1 L2

DIP-IPM

TAB connector on X52CA

Connect to the RS resistor

CN6

Thermistor <Heat sink> (TH8)

TB-L1, TB-L2, TB-L3 Connect to the outdoor converter circuit board (L1-OU, L2-OU, L3-OU) 400V AC

L3OUT-L3IN

Lead connect

OCH526B

Outdoor converter circuit board PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHA PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK

CN7

Connect to the outdoor power circuit board (CN7)

CK-OU

Connect to the CK capacitor

L1-IN, N-IN

Connect to the noise filter circuit board (LO1, No)

L1-A1

Connect to the ACL1

L1-A2, L2-A2, L3-A2

Connect to the ACL1, ACL2, ACL3

L1-OU, L2-OU, L3-OU

Connect to the outdoor power circuit board (TB-L1, L2, L3)

OCH526B

* Forced defrost should be done as follows.

1 Change the DIP SW1-1 on the outdoor controller board from OFF to ON. 2 Forced defrost will start by the above operation 1 if all these conditions written below are satisfied.

• Heat mode setting

• 10 minutes have passed since compressor started operating or previous forced defrost finished.

• Pipe temperature is less than or equal to 8:. Forced defrost will finish if certain conditions are satisfied. Forced defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON. After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This depends on the service conditions.

** When the air to water system is used, up to 6 refrigerant address (0 to 5) can be assigned.

Switch

Type

switch

Dip

switch

Push

switch

SW1

1 2

No.

Function Effective timing

Action by the switch operation

Forced defrost * Start Normal

When compressor is working in heating operation. *

Abnormal history clear

Refrigerant address

setting **

When power supply ON

Clear Normal off or operating

SWP

Under suspension

Pump down Start Normal

SW4

SW8

1 2 1 2

Test run Operating OFF

Under suspension

Test run mode setting Heating Cooling

Use of existing pipe Used Not used

No function

——

Separate indoor/outdoor

unit power supplies

Used Not used

Always

—

When power supply ON

ON OFF

123

0123

456ON123456ON123456ON123456

123

4567

456ON123456ON123456ON123456

123

891011

456ON123456ON123456ON123456

123

12 13 14 15

456ON123456ON123456ON123456

10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches

The black square (

■) indicates a switch position.

OCH526B

MODEL

SW6

123 64745 8

OFF

80V

123 64745 8

OFF

112V

SW5-6

123456

OFF

123456

OFF

123 64745 8

OFF

112Y

123 64745 8

OFF

140Y

123456

OFF

123456

OFF

MODEL

SW6

SW5-6

MODEL

SW6

123 64745 8

OFF

80V

123 64745 8

OFF

112V

SW5-6

123456

OFF

123456

OFF

123 64745 8

OFF

112Y

123 64745 8

OFF

140Y

123456

OFF

123456

OFF

MODEL

SW6

SW5-6

1 2

3,4,5

3 4 5 6 1 2

3,4

1 2 3 4 5 6 7

8 6

ON OFF

No.

Function Effective timing

Action by the switch operation

No function

Power failure

automatic recovery *

No function

Model select

Defrost Hz setting

No function No function

Defrost setting

No function

Function switch

Starting Ambient temp.

of flash injection

Switch

SW5

SW7

***

Dip

switch

SW9

SW6

SW5

Type of

Switch

—

Auto recovery

—

Defrost Hz

o 0.54

— —

For high humidity

—

Valid

—

No auto recovery

—

Normal

— —

Normal

—

Normal

When power supply ON

—

Always

— —

Always

—

Always

Setting of demand control

SW7-1 SW7-2

OFF

0% (Operation stop)

75%

50%

OFF

OFF OFF

Power consumption (Demand switch ON)

Model select

Following SW5-6 reference

—

SW9-3

PUHZ-SHW·VHA PUHZ-SHW·YHA(R1)

PUHZ-SHW·VHAR2 PUHZ-SHW·YHAR2

SW9-4

OFF

&,QLWLDOVHWWLQJ

&

&

OFF

OFF OFF

Ambient temp.

&

(2) Function of connector

* “Power failure automatic recovery” can be set by either remote controller or this DIP SW. If one of them is set to ON,

“Auto recovery” activates. Please set “Auto recovery” basically by remote controller because all units do not have DIP SW. Please refer to the indoor unit installation manual.

** SW7-1,2 are used for demand control. SW7-1,2 are effective only at the demand control.

(Refer to next page : Special function (b))

*** Please do not use SW7-3, 4 ,6 usually. Trouble might be caused by the usage condition.

Types Connector Function

Action by open/short operation

Effective timing

Short Open

Connector CN31 Emergency operation Start Normal When power supply ON

The black square (

■) indicates a switch position.

OCH526B

Special function

(a) Low-level sound priority mode (Local wiring) Unit enters into Low-level sound priority mode by external signal input setting. Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual. Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for demand

input located on the outdoor controller board enables to control compressor operation frequency.

* The performance depends on the load of conditioned outdoor temperature.

NOTE: When the Dip SW 9-1 on the control board of the outdoor unit is ON, set Dip SW9-1 to OFF.

How to wire

1) Make the circuit as shown above with adapter for external signal input (PAC-SC36NA-E).

2) Turn SW1 to on for Low-level sound priority mode. Turn SW1 to off to release Low-level sound priority mode and normal operation.

(b) On demand control (Local wiring)

Demand control is available by external input. In this mode, power consumption is decreased within the range of usual 0~100%.

How to wire Basically, the wiring is same with (a). Connect an SW 1 which is procured locally between Orange and Red (1 and 3) of the adapter for external signal input (PACSC36NA-E),

and insulate the tip of the brown lead wire.

It is possible to set it to the following power consumption (compared with ratings) by setting the SW7-1, 2.

CNDM

SW1

Max. 10 m including local wiring

SW1 : Switch X : Relay (Contact spec. : DC1mA)

Relay supply

Red 3

Brown 2

Orange 1

Purchased locally

Adapter for external signal input (PAC-SC36NA-E)

Outdoor unit controller board

  

Insulate this point securely as this is not used.

<Low-level sound priority mode circuit>

SW7-1 SW7-2

Power consumptopn

(SW1 ON)

OFF OFF 0 % (Operation stop)

ON OFF 50 %

OFF ON 75 %

OCH526B

The blinking patterns of both LED1 (green) and LED2 (red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part “A-Control Service Tool (PAC-SK52ST)” to connector CNM on outdoor controller board.

F3 F5 F9

—

E6 E7

—

E0 E3 E4 E5

A0~A8

[Display] (1)Normal condition

(2)Abnormal condition

Unit condition

Outdoor controller board A-Control Service Tool

LED1 (Green) LED2 (Red) Error code

When the power is turned on When unit stops When compressor is warming up When unit operates

Lighted Lighted Lighted Lighted Lighted

Not lighted

Indication of the display

Alternately blinking display

Operation mode

Not lighted

Lighted

00, etc. 08, etc.

C5, H7 etc.

Indication Error

Error

code*

Outdoor controller board

Contents Inspection method

LED1 (Green) LED2 (Red) 1 blinking 2 blinking

2 blinking 1 blinking

2 blinking

3 blinking

4 blinking

5 blinking

Connector(63L) is open. Connector(63H) is open. 2 connectors are open.

Startup time over

Error code is not defined.

Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more)

Miswiring of indoor/outdoor unit connecting wire (converse wiring or disconnection)

Indoor/outdoor unit communication error (signal receiving error) is detected by indoor unit.

Indoor/outdoor unit communication error (transmitting error) is detected by indoor unit.

Indoor/outdoor unit communication error (signal receiving error) is detected by outdoor unit.

Indoor/outdoor unit communication error (transmitting error) is detected by outdoor unit.

Remote controller signal receiving error is detected by remote controller.

Remote controller transmitting error is detected by remote controller.

Remote controller signal receiving error is detected by indoor unit.

Remote controller transmitting error is detected by indoor unit.

Serial communication error <Communication between outdoor controller board and outdoor power board> <Communication between outdoor controller board and M-NET P.C. board>

Communication error of M-NET system

* Error code displayed on remote controller **

Refer to service manual for indoor unit.

Check if indoor/outdoor connecting wire is connected correctly.

Check if 4 or more indoor units are connected to outdoor unit. 3Check if noise entered into indoor/outdoor connecting wire or power supply.

4Re-check error by turning off power, and on again.

Check if connector (63H or 63L) on the outdoor controller board is not disconnected.

Check continuity of pressure switch (63H or 63L) by tester.

Check if connector (CN4) on outdoor controller board and outdoor power board is not disconnected.

Check if there is poor connection of connector on outdoor controller board(CNMNT and CNVMNT).

Check M-NET communication signal.

1Check if remote controller is MA remote controller(PAR-21MAA). 2Check if noise entered into transmission wire of remote controller. 3Check if noise entered into indoor/outdoor connecting wire. 4Re-check error by turning off power, and on again.

1Check if connecting wire of indoor unit or remote controller

is connected correctly. 2Check if noise entered into transmission wire of remote controller.

3Re-check error by turning off power, and on again.

Check if indoor/outdoor connecting wire is connected correctly.

Check if noise entered into indoor/outdoor connecting wire or power supply.

Check if noise entered into indoor/outdoor controller board.

Re-check error by turning off power, and on again.

P.32 P.32 P.33 P.33 (EA) P.33 (Eb) P.33

(EC)

** **

P.39 (E8)

P.39 (E9)

P.38 P.39 P.38 P.39 P.39

P.40

P.39

P.41~

P.44

Detailed

reference

page

1Be sure to replace the 4-way valve. 2Check refrigerant pipes for disconnection or leakage. 3After the recovery of refrigerant, vacuum dry the whole

refrigerant circuit.

4Refer to section 10-6 “HOW TO CHECK THE PARTS”. 5Check refrigerant circuit for operation.

OCH526B

UL U8

UP UH

U6 U3

P1 P2 P9

Indication Error

Error

code*

Outdoor controller board

Contents Inspection method

LED1 (Green)

LED2 (Red)

3 blinking 1 blinking

2 blinking

3 blinking

* Error code displayed on remote controller ** Refer to service manual for indoor unit.

4 blinking

5 blinking

6 blinking

7 blinking

1 blinking

2 blinking

3 blinking

4 blinking

Abnormality of discharging temperature (TH4) and Comp. surface temperature (TH34)

Abnormality of superheat due to low discharge temperature

1Check if stop valves are open. 2Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller

board are not disconnected.

3Check if unit is filled with specified amount of refrigerant. 4Measure resistance values among terminals on indoor valve and

outdoor linear expansion valve using a tester.

Abnormal high pressure (High pressure switch 63H operated.) Abnormal low pressure (Low pressure switch 63L operated.)

Abnormality of outdoor fan motor rotational speed

1Check if indoor/outdoor units have a short cycle on their air ducts. 2Check if connector

(63H)(63L) on outdoor controller board is not disconnected.

3Check if heat exchanger and filter is not dirty. 4Measure resistance values among terminals on linear expansion valve

using a tester.

1Check if stop valves are open. 2Check looseness, disconnection, and converse connection of

compressor wiring.

Measure resistance values among terminals on compressor using a tester.

4Check if outdoor unit has a short cycle on its air duct.

Compressor overcurrent breaking(Start-up locked)

Compressor overcurrent breaking Abnormality of current sensor (P.B.) Abnormality of power module Open/short of outdoor thermistors (TH4, TH34)

Open/short of outdoor thermistors (TH3, TH32, TH33, TH6, TH7 and TH8)

1Check if connectors

(TH3, TH32, TH33, TH4, TH34 and TH7/6)

on outdoor

controller board and connector

(CN3)

on outdoor power board are not disconnected. 2Measure resistance value of outdoor thermistors.

Abnormality of heatsink temperature

1Check if indoor/outdoor units have a short cycle on their air ducts. 2Measure resistance value of outdoor thermistor(TH8).

1Check the outdoor fan motor. 2Check if connector (TH3) (63HS) on outdoor controller board is disconnected.

Abnormality of voltage 1Check looseness, disconnection, and converse connection of

compressor wiring.

Measure resistance value among terminals on compressor using a tester

3Check if power supply voltage decreases. 4Check the wiring of CN52C. 5Check the wiring of CNAF.

Abnormality of room temperature thermistor (TH1) Abnormality of pipe temperature thermistor /Liquid (TH2) Abnormality of pipe temperature thermistor/Condenser-Evaporator

1Check if connectors (CN20, CN21, CN29 and CN44) on indoor controller board are not disconnected. 2Measure resistance value of indoor thermistors.

Abnormality of drain sensor (DS) Float switch connector open (FS)

Indoor drain overflow protection

1Check if connector (CN31)(CN4F) on indoor controller board is not disconnected.

2Measure resistance value of indoor thermistors. 3Measure resistance value among terminals on drain pump using

a tester.

4Check if drain pump works. 5Check drain function.

Freezing (cooling)/overheating (heating) protection

1Check if indoor unit has a short cycle on its air duct. 2Check if heat exchanger and filter is not dirty. 3Measure resistance value on indoor and outdoor fan motors. 4Check if the inside of refrigerant piping is not clogged.

Abnormality of pipe temperature

Check if indoor thermistors(TH2 and TH5) are not disconnected from holder.

2Check if stop valve is open. 3

Check converse connection of extension pipe. (on plural units connection) 4Check if indoor/outdoor connecting wire is connected correctly. (on plural units connection)

P.34

P.35

P.34 P.37

P.35

P.37 P.37

P.38 P.37 P.35 P.34

P.35

P.36

** ** **

P.40

Detailed

reference

page

Protection from overheat operation (TH3)

OCH526B

SW2 setting

Display detail

Explanation for display Unit

<Outdoor unit operation monitor function> [When optional part “A-Control Service Tool (PAC-SK52ST)” is connected to outdoor controller board (CNM)]

Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on “A-Control Service Tool”.

Operation indicator SW2 : Indicator change of self diagnosis

1ON23456

(Be sure that 1 to 6 in the SW2 are set to OFF.)

(1) Display when the power supply ON

When the power supply ON, blinking displays by turns. Wait for 4 minutes at the longest.

(2) When the display lights (Normal operation)

1 Operation mode display.

1ON23456

(Initial setting)

SW2

1 second

interval

LED1

(Lighting)

Display Operation Model

The tens digit : Operation mode

The ones digit : Relay output

Display

Compressor

Warming-up Compressor

4-way valve

Solenoid valve

—

OFF / FAN

COOLING / DRY *

HEATING

DEFROSTING

2 Display during error postponement

Postponement code is displayed when compressor stops due to the work of protection device. Postponement code is displayed while error is being postponed.

* C5 is displayed during replacement operation.

(3) When the display blinks

Inspection code is displayed when compressor stops due to the work of protection devices.

Display Contents to be inspected (When power is turned on)

F3 F5 F9 E8 E9 EA Eb EC

E0~E7

63L connector(red) is open. 63H connector(yellow) is open. 2 connectors(63H/63L) are open. Indoor/outdoor communication error (Signal receiving error) (Outdoor unit) Indoor/outdoor communication error (Transmitting error) (Outdoor unit) Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more) Miswiring of indoor/outdoor unit connecting wire(converse wiring or disconnection) Startup time over Communication error except for outdoor unit

Display Inspection unit

Outdoor unit

Indoor unit 1

Indoor unit 2

Display Contents to be inspected (During operation)

U1 U2

U3 U4 U5 U6 U7 U8 Ud UF

P1~P8

A0~A7

Abnormal high pressure (63H operated) Abnormal high discharging temperature, high comp. surface temperature, shortage of refrigerant Open/short of outdoor unit thermistors (TH4, TH34) Open/short of outdoor unit thermistors (TH3, TH32, TH33, TH6, TH7 and TH8) Abnormal temperature of heatsink Abnormality of power module Abnormality of superheat due to low discharge temperature Abnormality in outdoor fan motor Overheat protection Compressor overcurrent interruption (When Comp. locked) Current sensor error Abnormal low pressure (63L operated) Compressor overcurrent interruption Abnormality of indoor units Abnormality of refrigerant Communication error of M-NET system

The black square (■) indicates a switch position.

OCH526B

SW2 setting

1ON23456

Display detail

Explanation for display Unit

Pipe temperature / Liquid (TH3)

-40~90

-40~90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) When -10:;

0.5 secs. 0.5secs. 2 secs.

1ON23456

Discharge temperature (TH4) 3~217

Output step of outdoor FAN 0~10

The number of ON / OFF times of compressor 0~9999

Compressor integrating operation times 0~9999

3~217 (When the discharge thermistor detects 100: or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 105:;

0.5 secs. 0.5secs. 2 secs.

Step

100 times

10 hours

0~10

0~9999 (When the number of times is 100 or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 42500 times (425 ×100 times);

0.5 secs. 0.5secs. 2 secs.

0~9999 (When it is 100 hours or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 2450 hours (245 ×10 hours);

0.5 secs. 0.5secs. 2 secs.

1ON23456

Compressor operating current 0~50

LEV-A opening pulse 0~480

0~50 * Value after the decimal point will be truncated.

0~480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 150 pulse;

0.5 secs. 0.5secs. 2 secs.

Pulse

Error postponement code history (1) of outdoor unit

Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.

Code

display

Code

display

Operation mode on error occurring Operation mode of when operation stops due to

error is displayed by setting SW2 like below.

1ON23456

(SW2)

1ON23456

Compressor operating frequency 0~225

0~255 (When it is 100Hz or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 125Hz;

0.5 secs. 0.5secs. 2 secs.

1ON23456

The black square (■) indicates a switch position.

OCH526B

SW2 setting

1ON23456

Display detail

Explanation for display Unit

Pipe temperature / Liquid (TH3) on error occurring

-40~90

-40~90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) When –15:;

0.5 secs. 0.5secs. 2 secs.

1ON23456

Discharge temperature (TH4) on error occurring 3~217

Compressor operating current on error occurring 0~20

Error code history (1) (latest) Alternate display of abnormal unit number and code

Error code history (2) Alternate display of error unit number and code

3~217 (When the temperature is 100: or more, the hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 130:;

0.5 secs. 0.5secs. 2 secs.

Code

display

Code

display

0~20

When no error history, “ 0 ” and “– –” are displayed by turns.

1ON23456

Thermo ON time 0~999

Test run elapsed time 0~120

0~999 (When it is 100 minutes or more, the hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 245 minutes;

0.5 secs. 0.5secs. 2 secs.

0~120 (When it is 100 minutes or more, the hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 105 minutes;

0.5 secs. 0.5secs. 2 secs.

Minute

The black square (■) indicates a switch position.

OCH526B

SW2 setting

1ON23456

Display detail

Explanation for display

Unit

Capacity setting display

Displayed as an outdoor capacity code.

Code

display

1ON23456

Outdoor unit setting information

Indoor pipe temperature / Liquid (TH2(1)) Indoor 1

-39~88

Code

display

-39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.)

1ON23456

Indoor room temperature (TH1) 8~39

Capacity

SHW80V SHW112V,112Y SHW140Y

Code

14 20 25

Setting details

• The tens digit (Total display for applied setting)

• The ones digit

H·P /

Cooling only

Single phase / 3 phase

Display details

0 : H·P 1 : Cooling only

0 :

Single phase

2 : 3 phase

Setting details

Defrosting switch

Display details

0 : Normal 1 :

For high humidity

(Example) When heat pump, 3 phase and defrosting (normal) are set up, “20” is displayed.

1ON23456

Indoor pipe temperature / Cond. / Eva. (TH5(1)) Indoor 1

-39~88

-39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.)

8~39

Indoor pipe temperature / Liquid (TH2(2)) Indoor 2

-39~88

Indoor pipe temperature / Cond. / Eva. (TH5(2)) Indoor 2

-39~88

1ON23456

The number of connected indoor units

Unit

0~3 (The number of connected indoor units are displayed.)

The black square (

■) indicates a switch position.

OCH526B

1ON23456

°C

Discharge superheat SHd 0~255

Cooling = TH4-T

63HS

Heating = TH4-T63HS

0~255 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.)

0.1 A

Input current of outdoor unit

0~500 (When it is 100 or more, hundreds digit, tens digit and ones digit are displayed by turns.)

Pulse

LEV-B opening pulse 0~480

0~480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.)

U9 error detail history (latest)

1ON23456

SW2 setting

1ON23456

Display detail

Explanation for display Unit

1ON23456

Indoor setting temperature 17~30

Pressure saturation temperature (T63HS)

-39~88

Outdoor heatsink temperature (TH8)

-40~200

17~30

-39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.)

-40~200 (When the temperature is 0: or less, “–” and temperature are displayed by turns.) (When the thermistor detects 100: or more, hundreds digit, tens digit and ones digit are displayed by turns.)

Outdoor outside temperature (TH7)

-39~88

-39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.)

The black square (■) indicates a switch position.

2 cycles

Number of defrost cycles 0 – FFFE

0 – FFFE (in hexadecimal notation) (When more than FF in hex (255 in decimal), the number is displayed in order of 16

's and 162's, and 161's and 160's places. (Example) When 5000 cycles;

0.5 secs. 0.5 secs. 2 secs.

Normal Overvoltage error Undervoltage error Input current sensor error L

1-phase open error

Abnormal power synchronous signal PFC/IGBT error (SHW80, 112V) Undervoltage



Display examples for multiple errors: Overvoltage (01) + Undervoltage (02) = 03 Undervoltage (02) + Power-sync signal error (08) = 0A L

1 phase open error (04) + PFC/IGBT error (20) = 24

Description Display

00 01 02

04 08 20

Code

display

OCH526B

DC bus voltage 180~370

180~370 (When it is 100V or more, hundreds digit, tens digit and ones digit are displayed by turns.)

1ON23456

SW2 setting

Display detail

Explanation for display Unit

1ON23456

0~255 (When the capacity is 100%, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 100%;

0.5 secs. 0.5secs. 2 secs.

Code

display

Error postponement code history (2) of outdoor unit

Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.

Code

display

Error postponement code history (3) of outdoor unit

Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.

Code

display

Error code history (3) (Oldest) Alternate display of abnormal unit number and code

When no error history, “0” and “– –“ are displayed by turns.

3: Liquid pipe temperature (TH3) 4: Discharge pipe temperature (TH4) 6: 2-phase pipe temperature (TH6) 7: Ambient temperature (TH7) 8: Heatsink temperature (TH8) 32: Suction pipe temperature (TH32) 34: Comp. surface temperature (TH34)

1ON23456

Error thermistor display

When there is no error thermistor, “–“ is displayed.

Code

display

Operation frequency on error occurring 0~255

0~255 (When it is 100Hz or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 125Hz;

0.5 secs. 0.5secs. 2 secs.

1ON23456

Fan step on error occurring 0~10

0~10

1ON23456

Step

Capacity save 0~255 When air conditioner is connected to M-NET and capacity save mode is demanded, “0”~”100” is displayed.

When there is no setting of capacity save “100” is displayed.

The black square (■) indicates a switch position.

OCH526B

SW2 setting

Display detail

Explanation for display Unit

1ON23456

Pulse

LEV-A opening pulse on error occurring 0~480

0~480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 130 pulse;

0.5 secs. 0.5secs. 2 secs.

Indoor room temperature (TH1) on error occurring 8~39

8~39

Indoor pipe temperature / Liquid (TH2) on error occurring

-39~88

-39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) (Example) When -15°C;

0.5 secs. 0.5secs. 2 secs.

Pressure saturation temperature (T

63HS)

on error occurring

-39~88

-39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) (Example) When -15°C;

0.5 secs. 0.5secs. 2 secs.

Outdoor pipe temperature / Cond./ Eva. (TH6) on error occurring

-39~88

-39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) (Example) When –15°C;

0.5 secs. 0.5secs. 2 secs.

Outdoor outside temperature (TH7) on error occurring

-39~88

-39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) (Example) When -15°C;

0.5 secs. 0.5secs. 2 secs.

Outdoor heatsink temperature (TH8) on error occurring

-40~200

-40~200 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.)

1ON23456

The black square (

■) indicates a switch position.

OCH526B

SW2 setting

Display detail

Explanation for display Unit

0~255 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 150°C;

0.5 secs. 0.5secs. 2 secs.

0~130 (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 115°C;

0.5 secs. 0.5secs. 2 secs.

Thermo-on time until error stops 0~999

0~999 (When it is 100 minutes or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 415 minutes;

0.5 secs. 0.5secs. 2 secs.

Indoor pipe temperature / Liquid (TH2 (3)) Indoor 3

-39~88

-39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.)

Indoor pipe temperature / Cond./ Eva. (TH5 (3)) Indoor 3

-39~88

-39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.)

When there is no indoor unit, “00” is displayed.

1ON23456

Minute

Discharge superheat on error occurring SHd 0~255

Cooling = TH4-T63HS Heating = TH4-T63HS

Sub cool on error occurring SC 0~130

Cooling = T

63HS-TH3

Heating = T63HS-TH2

The black square (■) indicates a switch position.

Controlling status of compressor operating frequency

1ON23456

Code

display

The following code will be a help to know the operating status of unit.

Display

Compressor operating frequency control

Display

Compressor operating frequency control

Primary current control Secondary current control

1 2

•

The tens digit

•The ones digit

(In this digit, the total number of

activated control is displayed.)

Preventive control for excessive temperature rise of discharge temperature Preventive control for excessive temperature rise of condensing temperature Frosting preventing control

Preventive control for excessive temperature rise of radiator panel

(Example) The following controls are activated.

• Primary current control

• Preventive control for excessive tempe- rature rise of condensing temperature

• Preventive control for excessive tempe rature rise of heatsink



LED

OCH526B

SW2 setting

Display detail

Explanation for display Unit

The black square (■) indicates a switch position.

0~480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.)

Pulse

1ON23456

LEV-C opening pulse 0~480

Outdoor pipe temperature (TH33)

-39~88

-39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.)

1ON23456

Normal Overvoltage error Undervoltage error Input current sensor error L

1-phase open error

Abnormal power synchronous signal PFC/IGBT error (SHW80, 112V) Undervoltage



Display examples for multiple errors: Overvoltage (01) + Undervoltage (02) = 03 Undervoltage (02) + Power-sync signal error (08) = 0A L

1 phase open error (04) + PFC/IGBT error (20) = 24

Description Display

00 01 02

04 08 20

U9 error details (To be shown while error call is deferred.)

Code

display

Outdoor suction pipe temperature (TH32)

-39~88

-39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) (Example) When –15°C;

0.5 secs. 0.5secs. 2 secs.

1ON23456

Comp. surface thermistor (TH34)

-52~221

1ON23456

-52~221 (When the temperature is 0: or less, “–” and temperature are displayed by turns.) (When the discharge thermistor detects 100: or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 105:;

0.5 secs. 0.5secs. 2 secs.

OCH526B

11 FUNCTION SETTING

Function

Settings

Mode No.

Setting No.

: Initial setting

(when sent from the factory)

Remarks

Power failure automatic recovery Indoor temperature detecting *

LOSSNAY connectivity

Power supply voltage Frost prevention temperature Humidifier control (Heating mode) Change of defrosting control Refrigerant leakage setting (%)

OFF ON Average data from each indoor unit Data from the indoor unit with remote controller Data from main remote controller Not supported Supported

(Indoor unit does not intake outdoor air through LOSSNAY

)

Supported

(Indoor unit intakes outdoor air through LOSSNAY) 240V 220V, 230V 2: (Normal) 3: When the compressor operates, the humidifier also operates. When the fan operates, the humidifier also operates. Standard For high humidity 80% 60%

1 2 1 2 3 1 2 3 1 2 1 2 1 2 1 2 1 2

04 15 16 17 21

The setting is applied to all the units in the same refrigerant system.

11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1.

<Table 1> Function selections

(1) Functions are available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.)

Meaning of "Function setting" Mode02:indoor temperature detecting

No.

Indoor temperature(ta)=

No.1

Average data of the sensor on all the indoor units

Initial setting

ta=(A+B)/2 ta=(A+B)/2 ta=A ta=A

No.2

Data of the sensor on the indoor unit that connected with remote controller

ta=A ta=B ta=A ta=A

No.3

Data of the sensor on main remote controller.

ta=C ta=C ta=C ta=C

OUTDOOR

INDOOR

REMOTE (MAIN)

REMOTE (SUB)

INDOOR

OUTDOOR

INDOOR

REMOTE (MAIN)

REMOTE (SUB)

OUTDOOR

INDOOR

REMOTE (MAIN)

OUTDOOR

INDOOR

REMOTE (MAIN)

REMOTE (SUB)

INDOOR

* The functions above are available only when the wired remote controller is used. The functions are not available for floor

standing models.

OCH526B

Function Settings

No.

Mode

No.

Setting

: Initial setting (Factory setting

)

- : Not available

4-Way

cassette

Ceiling

concealed

Wall mounted

PLA-BA(2)(3)

PEAD-JA(Q)

PKA-FAL(2)

Filter sign 100h 1

2500h 07 2

No filter sign indicator

3 1 2 3

Air flow

Quiet

(

Fan speed

)

Standard

Refer to the down table 1.

High ceiling

No.of air outlets 4 directions 1

3 directions 09 2

2 directions

Optional high efficiency

Not supported

filter

Supported

Vane setting

No vanes

(Vane No.3 setting : PLA only

)

Vane No.1 setting

11 2

1 2

Vane No.2 setting

Optional humidifier

Not supported

(

PLA only

)

Supported

Vane differential setting

No.1 setting (TH5: 24-28:

)

in heating mode

No.2 setting (Standard, TH5:28-32:

)

14 2

(

cold wind prevention

)

No.3 setting (TH5: 32-38:

)

Swing Not available Swing

Available Wave air flow

Set temperature in heating

Available

Temperature correction: Valid

mode (4 deg up

)

Not available

Temperature correction: Invalid

2 Fan speed when the Extra low 1 heating thermostat is OFF

Stop

25 2

Set fan speed

3 Fan speed when the

Set fan speed

1 cooling thermostat is OFF

Stop

2 Detection of abnormality of

Available

1 the pipe temperature (P8)Not available

}

PLA

}

PLA

* PKA-FAL/HAL/KAL : 2 deg up

PKA-HAL

PKA-KAL

(2) Functions are available when setting the unit number to 01-03 or AL (07 in case of wireless remote controller)

• When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 Set the

indoor unit number of Operating Procedure.

• When setting functions for a simultaneous twin indoor unit system, set the unit number to 01 to 02 for each indoor

unit in

case of selecting different functions for each unit referring to 4 setting the indoor unit number of Operating Procedure.

• When setting the same functions for an entire simultaneous twin indoor unit system, set refrigerant address to AL (07 in

case of wireless remote controller) referring to 4 setting the indoor unit number of Operating Procedure.

Mode No.11

Setting No. Settings PLA-BA(2)(3)

No Vanes

Vane No.3 setting

(

Downward position than the standard

)

Less smudging

2 Vane No.1 setting Standard

3 Vane No.2 setting

(

Upward position than the standard

)

Less draft *

* Be careful of the smudge on ceiling.

External static

pressure

Setting No.

Initial setting

(

Factory setting

)

35Pa 50Pa 70Pa 100Pa 150Pa

2 3 1 2 3

Mode No. 08 Mode No. 10

1 1 2 2 2

OCH526B

Main

Main display:

Cursor Page

Main menu

Maintenance Initial setting Service

F1 F2 F3 F4

Service menu

Cursor

Select:

Enter maintenance password

unem ecivreS

rosruC

:unem niaM

Test run Input maintenance info. Function setting Check Self check

Maintenance password Remote controller check

Service menu

Service menu:

Not available.

Please stop the unit.

When the Service menu is selected, a window will appear asking for the password.

To enter the current maintenance password (4 numerical digits), move the cursor to the digit you want to change with the F1

or F2 button.

Set each number (0 through 9) with the

button.

Then, press the

button.

Select "Service" from the Main menu, and press the button.

*At the main display, the menu buttom and select "Service" to make the

maintenance setting.

Maintenance password is required

Note: The initial maintenance password is "9999". Change the default

password as necessary to prevent unauthorized access. Have the password available for those who need it.

: If you forget your maintenance password, you can initialize the

password to the default password "9999" by pressing and holding the

and

buttons simultaneously for three seconds on the

maintenance password setting screen.

If the password matches, the Service menu will appear.

The type of menu that appears depends on the connected indoor units’ type.

Note: Air conditioning units may need to be stopped to make certain set-

tings. There may be some settings that cannot be made when the system is centrally controlled.

A screen will appear that indicates the setting has been saved.

Navigating through the screens

• To go back to the Main menu ..................

button

• To return to the previous screen ...............

button

11-1-1. Selecting functions using the wired remote controller <PAR-31MAA>

OCH526B

F1 F2 F3 F4

unem ecivreS

rosruC

:unem niaM

Test run Input maintenance info. Function setting Check Self check

F1 F2 F3 F4

Function setting

Cursor Address

Monitor:

Ref. address Unit No.

Grp./1/2/3/4/All

Function setting

Cursor Cursor

Request:

Ref. address Mode 1 Mode 2 Mode 3 Mode 4

Grp.

F1 F2 F3 F4

Function setting

Cursor Cursor

Request:

Ref. address Mode 7 Mode 8 Mode 9 Mode 11

Unit #1

Set the indoor unit refrigerant addresses and unit numbers with the F1

through F4 buttons, and then press the button to confirm the current setting.

Select "Function setting" with the F1

or F2 button, and press the button.

When data collection from the indoor units is completed, the current settings appears highlighted.

Non-highlighted items indicate that no function settings are made. Screen appearance varies depending on the "Unit No." setting.

Use the F1 or F2 button to move the cursor to select the mode number,

and change the setting number with the F3

or F4 button.

Select "Service" from the Main menu, and press the button.

When the

button is pressed, the target indoor unit will start fan operation.

If the unit is common or when running all units, all indoor units for the selected

refrigerant address will start fan operation.

F1 F2 F3 F4

Function setting

Ref. address

Sending data

Grp.

When the settings are completed, press the button to send the setting data from the remote controller to the indoor units.

When the transmission is successfully completed, the screen will return to the Function setting screen.

Note: • Make the above settings only on Mr. Slim units as necessary.

•

The above function settings are not available for the City Multi units.

•

Table 1 summarizes the setting options for each mode number. Refer to the indoor unit Installation Manual for the detailed information about initial settings, mode numbers, and setting numbers for the indoor units.

•

Be sure to write down the settings for all functions if any of the initial settings has been changed after the completion of installation work.

OCH526B

Select mode No. 02

(room temperature detection position).

Select setting No. 03 (remote controller fixed).

(Use

and G.)

Enter the setting.

(Press

Finished

End function display.

(Press

and B at the same time.)

Example: Selecting room temperature detection position

YES

Selecting functions using the wired remote controller

Check the function selection setting.

For modes 15 and higher, press

and B at the same time.

Specify refrigerant address 00 (outdoor unit).

Specify unit No. 00. (indoor unit)

(Use

and D.)

Enter the setting.

(Press

(Specified indoor unit: FAN operation)

Change refrigerant address or unit No.

Switch to function setting mode.

(Press

and B at the same time

with the remote controller stopped.)

11-1-2. Selecting functions using the wired remote controller <PAR-21MAA>

First, try to familiarize yourself with the flow of the function selection procedure. In this section, an example of setting the room temperature detection position is given. For actual operations, refer to steps 1 to 0 .

Setting number

Refrigerant address Unit number

Mode number

Modes 01 to 14 can be activated by pressing buttons

and

simultaneously, and modes 15 to 28 by pressing buttons

and J.

The above procedure must be carried out only if changes are necessary.

OCH526B

[Operating Procedure]

 Check the function selection settings.

 Set the indoor unit number.

 Press the

ON/OFF

button so that "- -" blinks in the unit number display

area.

* To set modes 01 to 06 or 15 to 22, select unit number "00". * To set modes 07 to 14 or 23 to 28, carry out as follows:

• To set each indoor unit individually, select " 01" to "04".

• To set all the indoor units collectively, select " AL".

 Confirm the refrigerant address and unit number.

 Press the

MODE

button to confirm the refrigerant address and unit number. After a while, "- - " will start to blink in the mode number display area.

 When the refrigerant address and unit number are confirmed by pressing the

MODE

button, the corresponding indoor unit will start fan operation. This

selection. However, if "00" or "AL" is selected as the unit number, all the indoor units corresponding to the specified refrigerant address will start fan operation.

*"88" will blink in the room temperature display area if the selected refrigerant

address does not exist in the system. Furthermore, if

"F"

appears and blinks in the unit number display area and the refrigerant address display area also blinks, there are no units that correspond to the selected unit number. In this case, the refrigerant address and unit number may be incorrect, so repeat steps  and  to set the correct ones.

When grouping different refrigerant systems, if an indoor unit other than the one to which the refrigerant address has been set to perform fan operation, there may be another refrigerant address that is the same as the specified one. In this case, check the DIP switch of the outdoor unit to see whether such a refrigerant address exists.

 Select the mode number.

 Press the [

TEMP] buttons ( and ) to set the desired mode

number. (Only the selectable mode numbers can be selected.)

 Select the setting content for the selected mode.

 Press the

button. The currently selected setting number will

blink, so check the currently set content.

 Press the [

TEMP] buttons ( and ) to select the desired setting

number.

 Register the settings you have made in steps  to  .

 Press the

MODE

button. The mode number and setting number will start

to blink and registration starts.

The mode number and setting number will stop blinking and remain lit, indicating the end of registration.

* If " - - - " is displayed for both the mode number and setting number and "

" blinks in the room temperature display area, a transmission error may have occurred.

Check to see if there are any sources of noise or interference near the transmission path.

 If you wish to continue to select other functions, repeat steps  to  .

 Complete function selection.

 Hold down the ( mode is 15 to 28) and buttons

simultaneously for at least 2 seconds.

FILTER

After a while, the function selection screen will disappear and the air conditioner OFF screen will reappear.

* Do not operate the remote controller for at least 30 seconds after completing

function selection. (No operations will be accepted even if they are made.)

Note If a function of an indoor unit is changed by function selection after installation is complete, make sure that a " " mark, etc. of Table 1 to indicate the change.

Refrigerant address display section

Unit number display section

Mode number display section

Mode number 02 = Indoor temperature detection

Setting number display section

Setting number 3 = Remote controller built-in sensor

Setting number 1 = Indoor unit operating average

TEST

Changing the function selection settings for each mode will change its relevant mode function. Perform steps  through  to check all the function selection settings, and then change the settings as necessary. For the initial settings, refer to the <Table 1> in the chapter 12-1. The following is the procedure to operate the remote controller internal sensor.

helps you find the location of the indoor unit for which you want to perform function

Turn off the remote controller. Set the outdoor address.

*If the and temperature displays flash “” for 2 seconds and stop flashing, this seems to be an error. Check for noise source or interference around the transmission path.

Note: If the operation is made incorrectly before completion, finish operation by going to the step  and restart from the step .

Pr ess the but ton s( a nd )

) to indicate the indoor unit No. in turn such as 00 → 02 → 03 → 04 → AL. Select the unit No. to which the function selection applies.

Hold down 2 buttons simultaneously for 2 seconds: the 

and  buttons to set the modes 01 through 14, and the 

and  buttons to set the modes 15 through 28.

The “ ” will flash for a while and show “--” as below.

FUNCTION SELECTION

Press the [ buttons ( and ) to select the desired refrigerant address. The refrigerant address changes from "00" to "15". (This operation is not possible for single refrigerant systems.)

CLOCK]

FUNCTION SELECTION

00 refrigerant address

Indoor unit

Fan mode

Unit number 01

Unit number 02

Outdoor unit

Example) When the refrigerant address is set to 00 and the unit number is 02.

Remote controller

Confirm

OCH526B

ON/OFF

TEMP

FAN

VAN E

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

CHECK

RESET

SET

CLOCK

ON/OFF button

Check button

HOUR button

MINUTE button

Flow of function selection procedure

The flow of the function selection procedure is shown below. This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation. The procedure is given after the flow chart.

 Check the function selection setting.

 Switch to function selection mode.

(Enter address "50" in troubleshooting mode, then press the HOUR button.)

Troubleshooting mode is the mode entered when you press the CHECK button twice to display "CHECK".

 Specify unit No. "01" (since the function applies to unit 01). (Set address "01" while still in troubleshooting mode, then press the MINUTE button.) Note: You cannot specify the refrigerant address.



Select mode No. "24" (function that raises set temperature by 4 degrees during HEAT operation).

(Set address "24" while still in troubleshooting mode, then press the HOUR button.)



Finished

 End function selection mode. (End troubleshooting mode.)

YES

Note: When you switch to function selection mode on the wireless remote controller's operation area, the unit ends function selection mode automatically if nothing is input for 10 minutes or longer.

 Select setting No. "02" (OFF). (Set address "02" while still in troubleshooting mode, then press the HOUR button.)

Change unit No.

YES



[Flow of function selection procedure]

11-1-3. Selecting functions using the wireless remote controller (Type C)

Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refrigerant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller.

By setting unit number with the button, specified indoor unit starts performing fan operation. Detect which unit is assigned to which number using this function. If unit number is set to AL, all the indoor units in same refrigerant system start performing fan operation simultaneously.

[Operating instructions]

1 Check the function settings. 2 Press the button twice continuously.

CHECK is lit and “00” blinks. Press the temp button once to set “50”. Direct the wireless remote controller toward the receiver of the indoor unit and press the button. 3 Set the unit number. Press the temp button to set the unit number. (Press “01” to specify the indoor unit whose unit number is 01.) Direct the wireless remote controller toward the receiver of the indoor unit and press the button.

* If a unit number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the unit number setting. * If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the unit number setting. 4 Select a mode. Press the temp button to set a mode. Press “24” to turn on the function that raises the set temperature by 4 degree during heat operation. Direct the wireless remote controller toward the sensor of the indoor unit and press the button. The sensor-operation indicator will blink and beeps will be heard to indicate the current setting number. Current setting number: 1 = 1 beep (one second) 2 = 2 beeps (one second each) 3 = 3 beeps (one second each) * If a mode number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the mode number. * If the signal was not received by the sensor, you will not hear a beep or, a “double ping sound” may be heard. Reenter the mode number. 5 Select the setting number. Press the temp button to select the setting number. (02: Not available) Direct the wireless remote controller toward the receiver of the indoor unit and press the button. The sensor-operation indicator will blink and beeps will be heard to indicate the the setting number. Setting number: 1 = 2 beeps (0.4 seconds each) 2 = 2 beeps (0.4 seconds each, repeated twice) 3 = 2 beeps (0.4 seconds each, repeated 3 times) * If a setting number that cannot be recognized by the unit is entered, the setting will turn back to the original setting. *

If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the setting number.

6 Repeat steps 4 and 5 to make an additional setting without changing unit number. 7 Repeat steps 3 to 5 to change unit number and make function settings on it. 8 Complete the function settings.

Press button. * Do not use the wireless remote controller for 30 seconds after completing the function setting.

CHECK

minhh

min

OCH526B

Function buttons

F1 F2 F3 F4

Press to turn ON/OFF the indoor unit.

ON / OFF button

When the backlight is off, pressing any button turns the backlight on and does not perform its function. (except for the

(ON / OFF) button)

The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.

Press to save the setting.

SELECT button

Press to return to the previous screen.

RETURN button

Press to bring up the Main menu.

MENU button

Operation settings will appear. When the backlight is off, pressing any button turns the backlight on and it will stay lit for a certain period of time depending on the screen.

Backlit LCD

This lamp lights up in green while the unit is in operation. It blinks while the remote controller is starting up or when there is an error.

ON / OFF lamp

Main display : Press to change the operation mode. Main menu : Press to move the cursor down.

Function button

Main display : Press to decrease temperature. Main menu : Press to move the cursor up.

Function button

Main display : Press to increase temperature. Main menu : Press to go to the previous page.

Function button

Main display : Press to change the fan speed. Main menu : Press to go to the next page.

Function button

Fri

Room

Set temp.

Mode Tem p. F an

Cool Auto

Main

Main display:

Cursor Page

Main menu

Vane·Louver·Vent. (Lossnay) High power Timer Weekly timer OU silent mode

Function guide

11-2. FUNCTION SELECTION OF REMOTE CONTROLLER

11-2-1. PAR-31MAA

OCH526B

Not all functions are available on all models of indoor units.

Night setback

Energy saving

Auto return

Schedule

Error information

Weekly timer

Main menu

Press the

button.

Move the cursor to the desired item with the

and

buttons, and press the

SELECT

button.

Vane · Louver · Vent. (Lossnay)

High power

OU silent mode

Restriction

Maintenance

Initial setting

On / Off timer

Auto-Off timer

Temp. range

Operation lock

Manual vane angle

Main / Sub

Timer

Main display

Contrast

Display details

Auto mode

Administrator password

Language selection

Service

Input maintenance info.

Function setting (Mr.Slim)

Check

Self check

Maintenance password

Remote controller check

Auto descending panel

Test run

Clock

Filter information

OCH526B

Setting and display items Setting details

Vane · Louver · Vent. (Lossnay)

Use to set the vane angle.

• Select a desired vane setting from ﬁ ve different settings. Use to turn ON / OFF the louver.

• Select a desired setting from "ON" and "OFF." Use to set the amount of ventilation.

• Select a desired setting from "Off," "Low," and "High."

High power Use to reach the comfortable room temperature quickly.

• Units can be operated in the High-power mode for up to 30 minutes.

Timer On/Off timer* Use to set the operation On/Off times.

• Time can be set in 5-minute increments.

Auto-Off timer Use to set the Auto-Off time.

• Time can be set to a value from 30 to 240 in 10-minute increments.

Weekly timer* Use to set the weekly operation On / Off times.

• Up to eight operation patterns can be set for each day. (Not valid when the On/Off timer is enabled.)

OU silent mode* Use to set the time periods in which priority is given to quiet operation of outdoor units over

temperature control. Set the Start/Stop times for each day of the week.

• Select the desired silent level from "Normal," "Middle," and "Quiet."

Restriction Temp. range Use to restrict the preset temperature range.

• Different temperature ranges can be set for different operation modes.

Operation lock

Use to lock selected functions.

• The locked functions cannot be operated.

Energy saving

Auto return Use to get the units to operate at the preset temperature after performing energy-save

operation for a speciﬁ ed time period.

• Time can be set to a value from 30 and 120 in 10-minute increments. (This function will not be valid when the preset temperature ranges are restricted.)

Schedule* Set the start/stop times to operate the units in the energy-save mode for each day of the week,

and set the energy-saving rate.

• Up to four energy-save operation patterns can be set for each day.

• Time can be set in 5-minute increments.

• Energy-saving rate can be set to a value from 0% and 50 to 90% in 10% increments.

Night setback* Use to make Night setback settings.

• Select "Yes" to enable the setting, and "No" to disable the setting. The temperature range and

the start/stop times can be set.

Filter information Use to check the ﬁ lter status.

• The ﬁ lter sign can be reset.

Error information Use to check error information when an error occurs.

• Error code, error source, refrigerant address, unit model, manufacturing number, contact

information (dealer's phone number) can be displayed.

(The unit model, manufacturing number, and contact information need to be registered in

advance to be displayed.)

Maintenance

Auto descending panel

Auto descending panel (Optional parts) Up / Down you can do.

Manual vane angle

Use to set the vane angle for each vane to a ﬁ xed position.

Initial setting Main/Sub When connecting two remote controllers, one of them needs to be designated as a sub

controller.

Clock Use to set the current time.

Main display Use to switch between "Full" and "Basic" modes for the Main display.

• The initial setting is "Full."

Contrast Use to adjust screen contrast.

* Clock setting is required.

Continue to the next page

OCH526B

Setting and display items Setting details

Initial setting Display

details

Make the settings for the remote controller related items as necessary. Clock: The factory settings are "Yes" and "24h" format. Temperature: Set either Celsius (°C) or Fahrenheit (°F). Room temp. : Set Show or Hide. Auto mode: Set the Auto mode display or Only Auto display.

Auto mode Whether or not to use the AUTO mode can be selected by using the button.

This setting is valid only when indoor units with the AUTO mode function are connected.

Administrator password

The administrator password is required to make the settings for the following items.

• Timer setting • Energy-save setting • Weekly timer setting

• Restriction setting • Outdoor unit silent mode setting • Night set back

Language selection

Use to select the desired language.

Service Test run Select "Test run" from the Service menu to bring up the Test run menu.

• Test run • Drain pump test run

Input maintenance

Select "Input maintenance Info." from the Service menu to bring up the Maintenance information screen. The following settings can be made from the Maintenance Information screen.

• Model name input • Serial No. input • Dealer information input

Function setting

Make the settings for the indoor unit functions via the remote controller as necessary.

Check Error history: Display the error history and execute delete error history.

Refrigerant leak check: Refrigerant leaks can be judged. Smooth maintenance: The indoor and outdoor maintenance data can be displayed. Request cord: Details of the operation data including each thermistor temperature and error his-

tory can be checked. Self check Error history of each unit can be checked via the remote controller. Maintenance

password

Take the following steps to change the maintenance password.

Remote controller check

When the remote controller does not work properly, use the remote controller checking function

to troubleshoot the problem.

OCH526B

11-2. FUNCTION SELECTION OF REMOTE CONTROLLER

The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed.

Item 1

1.Change language ("CHANGE LANGUAGE")

2.Function limit ("FUNCTION SELECTION")

3.Mode selection ("MODE SELECTION")

4.Display change ("DISP MODE SETTING")

Item 3 (Setting content)

• Display in multiple languages is possible.

• Setting the range of operation limit (operation lock)

• Setting the use or non-use of "automatic" operation mode

• Setting the temperature adjustable range (maximum, minimum)

• Selecting main or sub remote controller *

When 2 remote controllers are connected to 1 group, 1 controller must be set to sub.

• Setting the use or non-use of clock function

• Setting the timer type

• Contact number display in case of error

• Setting the telephone number

• Setting the temperature unit ( or

°F) to display

• Setting the use or non-use of the display of indoor (room) air temperature

• Setting the use or non-use of the display of "Cooling" or "Heating" display

during operation with automatic mode

Item 2

Language setting to display

(1)

Operation function limit setting (operation lock) ("LOCKING FUNCTION")

(2)

Use of automatic mode setting ("SELECT AUTO MODE")

(3)

Temperature range limit setting ("LIMIT TEMP FUNCTION")

(1)

Remote controller main/sub setting ("CONTROLLER MAIN/SUB")

(2) Use of clock setting ("CLOCK") (3) Timer function setting ("WEEKLY TIMER") (4) Contact number setting for error situation ("CALL.")

(1) Temperature display /°F setting ("TEMP MODE /

°F")

(2)

Room air temperature display setting ("ROOM TEMP DISP SELECT")

(3)

Automatic cooling/heating display setting ("AUTO MODE DISP C/H")

[Function selection flowchart] Refer to next page. [1] Stop the air conditioner to start remote controller function selection mode. [2] Select from item1. [3] Select from item2. [4] Make the setting. (Details are specified in item3) [5] Setting completed. [6] Change the display to the normal one. (End)





[Detailed setting] [4] -1. CHANGE LANGUAGE setting

The language that appears on the dot display can be selected.

• Press the [

MENU] button to change the language.

 Japanese (JP),  English (GB),  German (D), Spanish (E),  Russian (RU),  Italian (I),  Chinese (CH),

French (F)

[4] -2. Function limit (1) Operation function limit setting (operation lock)

• To switch the setting, press the [ ON/OFF] button.

 no1 : All operation buttons except [ ON/OFF] button are locked.  no2 : All operation buttons are locked.  OFF (Initial setting value) : Operation lock setting is not made

* To make the operation lock setting valid on the normal screen, it is

necessary to press buttons (Press and hold down the [FILTER] and [ ON/OFF] buttons at the same time for 2 seconds.) on the normal screen after the above setting is made..

(2) Use of automatic mode setting When the remote controller is connected to the unit that has automatic operation mode, the following settings can be made.

• To switch the setting, press the [ ON/OFF] button.  ON (Initial setting value) : The automatic mode is displayed when

the operation mode is selected.

 OFF : The automatic mode is not displayed

when the operation mode is selected.

[4] -3. Mode selection setting (1) Remote controller main/sub setting

• To switch the setting, press the [

ON/OFF] button.

 Main : The controller will be the main controller.  Sub : The controller will be the sub controller.

(2) Use of clock setting

• To switch the setting, press the [

ON/OFF] button.

 ON : The clock function can be used.  OFF : The clock function cannot be used.

(3) Timer function setting

• To switch the setting, press the [

ON/OFF] button. (Choose

one of the followings.)

 WEEKLY TIMER (initial setting):

The weekly timer can be used.

 AUTO OFF TIMER: The auto off timer can be used.

SIMPLE TIMER:

The simple timer can be used.

TIMER MODE OFF: The timer mode cannot be used.

* When the use of clock setting is OFF, the "WEEKLY TIMER"

cannot be used.

(4) Contact number setting for error situation

• To switch the setting, press the [

ON/OFF] button.

 CALL OFF : The set contact numbers are not displayed in case

of error.

 CALL **** *** **** : The set contact numbers are displayed

in case of error.

(3) Temperature range limit setting After this setting is made, the temperature can be changed within the set range.

• To switch the setting, press the [ ON/OFF] button.  LIMIT TEMP COOL MODE :

The temperature range can be changed on cooling/dry mode.

 LIMIT TEMP HEAT MODE :

The temperature range can be changed on heating mode.

 LIMIT TEMP AUTO MODE :

The temperature range can be changed on automatic mode.

 OFF (initial setting) : The temperature range limit is not active. *

When the setting, other than OFF, is made, the temperature range limit setting on cooling, heating and automatic mode is made at the same time. However the range cannot be limited when the set temperature range has not changed.

•

To increase or decrease the temperature, press the [ TEMP ( ) or ( )] button.

•

To switch the upper limit setting and the lower limit setting, press the

[ ]

button. The selected setting will flash and the temperature can be set.

• Settable range

Cooling/Dry mode : Lower limit: 19  ~ 30  Upper limit: 30  ~ 19  Heating mode : Lower limit: 17  ~ 28  Upper limit: 28  ~ 17  Automatic mode : Lower limit: 19  ~ 28  Upper limit: 28  ~ 19 

CALL_ : The contact number can be set when the display

is as shown on the left.

• Setting the contact numbers To set the contact numbers, follow the following procedures. Move the flashing cursor to set numbers. Press the [

TEMP. ( ) and

(

)] button to move the cursor to the right (left). Press the [ CLOCK

(

) and ( )] button to set the numbers.

[4] -4. Display change setting (1) Temperature display /

°F setting

• To switch the setting, press the [

ON/OFF] button.

  : The temperature unit  is used.  °F : The temperature unit °F is used.

• To switch the setting, press the [ ON/OFF] button.

(3) Automatic cooling/heating display setting

• To switch the setting, press the [

ON/OFF] button.

 ON : One of "Automatic cooling" and "Automatic heating" is

displayed under the automatic mode is running.

 OFF : Only "Automatic" is displayed under the automatic mode.

(2) Room air temperature display setting

ON : The room air temperature is displayed. OFF : The room air temperature is not displayed.



OCH526B

OFF

no1

no2

OFF

CALL-

OFF

°C

°F

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

English

German

Spanish

Russian

Italian

Chinese

French

Japanese

Item 3

Item 2Item 1

Hold down the button and press the button for 2 seconds.

Remote controller function selection mode

Press the operation mode button. Press theTIMER MENU button. Press theTIMER ON/OFF button.

Dot display

Normal display (Display when the air conditioner is not running)

[Function selection flowchart]

Setting language (English)

Room air temperature is not displayed.

One of “Automatic cooling” and “Automatic heating” is displayed under the automatic mode is running. (Initial setting value)

Only “Automatic” is displayed under the automatic mode.

Change Language

Function selection

Mode selection

Display mode setting

Operation lock setting is not used. (Initial setting value)

All operation buttons except On/Off button are locked.

All operation buttons are locked.

The automatic mode is displayed when the operation mode is selected. (Initial setting value)

The automatic mode is not displayed when the operation mode is selected.

The temperature range limit is not active. (Initial setting value)

The temperature range can be changed on cooling/dry mode.

The temperature range can be changed on heating mode.

The temperature range can be changed on automatic mode.

The remote controller will be the main controller. (Initial setting value)

The remote controller will be the sub controller.

The clock function can be used. (Initial setting value)

The clock function cannot be used.

Weekly timer can be used. (Initial setting value)

Auto off timer can be used.

Simple timer can be used.

Timer mode cannot be used.

The set contact numbers are not displayed in case of error. (Initial setting value)

The set contact numbers are displayed in case of error.

The temperature unit °C is used. (Initial setting value)

The temperature unit °F is used.

Room air temperature is displayed. (Initial setting value)

Fixed air flow direction mode

Not necessary to set this mode. Refer to OPERATION MANUAL of indoor unit for details on operation.

Automatic filter elevation panel up/down operation mode

Not necessary to set this mode. Refer to OPERATION MANUAL of Optional Parts (Panel) for details on operation.

























OCH526B

Details on the operation data including each thermistor temperature and error history can be conﬁ rmed with the remote controller.

F1 F2 F3 F4

Check menu

Cursor

Service menu:

Error history Refrigerant volume check Refrigerant leak check Smooth maintenance Request code

Select "Request code" with the F1 or F2 button, and press the button.

Select "Check" with the F1

or F2 button, and press the button.

Set the Refrigerant address and Request code.

Select the item to be changed with the

button.

Select the required setting with the

button.

■

<Ref.address>setting [ 0 ] – [ 15 ]

■

<Request code>setting

Press the

button, Data will be collected and displayed.

F1 F2 F3 F4

Request code

Request:

Request code

Ref.address

Request code

Cursor −＋

Ref.address

Request code

Cursor

−＋

Request code: 004 Discharge temperature: 69˚C

Relay output state

<Operation state> (Request code "0")

1) Operation mode

Display Operation mode

0 STOP • FAN

C COOL • DRY

H HEAT

d Defrost

2) Relay output state

Display

Power currently

supplied to compressor

Compressor Four-way valve Solenoid valve

0— ———

1ON

2ON

3ONON

4ON

5ONON

6ONON

7ONONON

8ON

AON ON

Select "Service" from the Main menu, and press the button.

12-1. HOW TO "MONITOR THE OPERATION DATA"

12-1-1. PAR-31MAA

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

OCH526B

12-1-2. PAR-21MAA

• Turn on the [Monitoring the operation data]









(1)

(2)

(3)

(4)

(5)

(6)

(7)

(1) Press the

TEST

button for 3 seconds so that [ Maintenance mode] appears on the screen (at ).

(2) Press the

CHECK

button for 3 seconds to switch to [Maintenance monitor].

Note)

It is not possible to switch to [Maintenance monitor] during data request in maintenance mode (i.e., while "

- - - -"

is blinking)

since no buttons are operative.

Operating the service inspection monitor

- - - ] appears on the screen (at



) when [Maintenance monitor] is activated.

(The display (at



) now allows you to set a request code No.)

(3) Press the [TEMP] buttons (

and ) to select the desired refrigerant address.

[Screen ]

(4) Press the [CLOCK] buttons (

and ) to set the desired request code No.

(5) Press the

FILTER

button to perform data request.

(The requested data will be displayed at  in the same way as in maintenance mode.)

Data collected during operation of the remote controller will be displayed. The collected data such as temperature data will not be updated automatically even if the data changes. To display the updated data, carry out step (4) again.

Canceling the Monitoring the operation data

(6) While [Maintenance monitor] is displayed, press the

CHECK

button for 3 seconds to return to maintenance mode.

(7) To return to normal mode, press the

ON/OFF

button.

Example) Request code "004"

Discharge temperature 69 Refrigerant address "00"

B: Refrigerant address

A: Maintenance mode

C: Data display area D: Request code display area

[

OCH526B

12-2. REQUEST CODE LIST

Note: Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed.

Request code

Request content

Description

(Display range)

Unit Remarks

0 1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18

20 21

22 23 24 25 26 27 28 29 30 31

35 36

37 38 39 40 41 42 43 44 45 46 47 48 49

Operation state Compressor-Operating current (rms) Compressor-Accumulated operating time Compressor-Number of operation times Discharge temperature (TH4) Outdoor unit - Liquid pipe 1 temperature (TH3) Outdoor unit - Liquid pipe 2 temperature Outdoor unit-2-phase pipe temperature (TH6)

Outdoor unit-Outside air temperature (TH7) Outdoor unit-Heatsink temperature (TH8)

Discharge superheat (SHd) Sub-cool (SC)

Compressor-Operating frequency Compressor-Target operating frequency Outdoor unit-Fan output step Outdoor unit-Fan 1 speed (Only for air conditioners with DC fan motor) Outdoor unit-Fan 2 speed (Only for air conditioners with DC fan motor)

LEV (A) opening LEV (B) opening

Primary current DC bus voltage

Number of connected indoor units Indoor unit-Setting temperature Indoor unit-Intake air temperature <Thermo judge temperature> Indoor unit-Intake air temperature (Unit No. 1) <Heat mode-4-deg correction> Indoor unit-Intake air temperature (Unit No. 2) <Heat mode-4-deg correction> Indoor unit-Intake air temperature (Unit No. 3) <Heat mode-4-deg correction> Indoor unit-Intake air temperature (Unit No. 4) <Heat mode-4-deg correction>

Indoor unit - Liquid pipe temperature (Unit No. 1) Indoor unit - Liquid pipe temperature (Unit No. 2) Indoor unit - Liquid pipe temperature (Unit No. 3) Indoor unit - Liquid pipe temperature (Unit No. 4)

Indoor unit-Cond./Eva. pipe temperature (Unit No. 1) Indoor unit-Cond./Eva. pipe temperature (Unit No. 2) Indoor unit-Cond./Eva. pipe temperature (Unit No. 3) Indoor unit-Cond./Eva. pipe temperature (Unit No. 4)

Thermo ON operating time Test run elapsed time

Refer to 12-2-1. Detail Contents in Request Code. 0 – 50 0 – 9999 0 – 9999 3 – 217

-40 – 90

-39 – 88

-40 – 200

0 – 255 0 – 130

0 – 255 0 – 255 0 – 10

0 – 9999

0 – 500 0 – 500

0 – 50 180 – 370

0 – 4 17 – 30 8 – 39 8 – 39

8 – 39

-39 – 88

0 – 999 0 – 120

–

10 hours

100 times

: : : :

Outdoor unit-Suction pipe temperature (TH32)

-39 – 88

: : :

: :

Hz Hz

Step

rpm

Pulses Pulses

LEV (C) opening

0 – 500

Pulses

A V

Units

: :

: : : :

Minutes Minutes

"0" is displayed if the air conditioner is a single-fan

type.

"0" is displayed if the target unit is not present.

"0"

is displayed if the target unit is not present.

"0"

is displayed if the target unit is not present.

Not possible to activate maintenance mode during the test run.

Pressure saturation temperature (T63HS)

-39 – 88

OCH526B

Request code

Request content

Description

(Display range)

Unit Remarks

100

101

102

Indoor unit-Control state

Outdoor unit-Control state

Compressor-Frequency control state

Outdoor unit-Fan control state

Actuator output state

Error content (U9)

Signal transmission demand capacity

Contact demand capacity

External input state (silent mode, etc.)

Outdoor unit-Capacity setting display

Outdoor unit-Setting information

Outdoor unit-SW1 setting information

Outdoor unit-SW2 setting information

Outdoor unit-SW4 setting information

Outdoor unit-SW5 setting information

Outdoor unit-SW6 setting information

Outdoor unit-SW7 setting information

Outdoor unit-SW8 setting information

Outdoor unit-SW9 setting information

Outdoor unit-SW10 setting information

M-NET adapter connection (presence/absence)

Display of execution of replace/wash operation

Outdoor unit-Microprocessor version information

Outdoor unit-Microprocessor version information (sub No.)

Outdoor unit - Error postponement history 1 (latest)

Outdoor unit - Error postponement history 2 (previous)

Outdoor unit - Error postponement history 3 (last but one)

0 – 255

Refer to 12-2-1.Detail Contents in Request Code.

"0000": Not connected

Auxiliary information (displayed after

version information)

Displays postponement code. (" - - " is

displayed if no postponement code is present)

Displays postponement code. (" - - " is

displayed if no postponement code is present)

Displays postponement code. (" - - " is

displayed if no postponement code is present)

–

Ver

–

Code

Refer to 12-2-1.Detail Contents in Request Code.

"0001": Connected

"0000": Not washed "0001": Washed

"0501"

"A000"

OCH526B

Request code

Request content

Description

(Display range)

Unit Remarks

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

146

147

148

149

150

151

152

Displays error history. (" - - " is displayed if no history is present.)

: TH3

6 : TH6

7 : TH7

8 : TH8

0 : No thermistor error

Displayed in the same way as request code "0".

0 – 50

0 – 9999

3 – 217

-40 – 90

-39 – 88

-40 – 200

0 – 255

0 – 130

0 – 255

0 – 10

0 – 9999

0 – 500

0 – 999

-39 – 88

Code

Sensor

number

–

10 hours

100 times

   

Step

rpm

Pulses

Minutes



  

"0" is displayed if the air conditioner is a single-

fan type.

Average value of all indoor units is displayed if the air condi-

tioner consists of 2 indoor units (twin).

Average value of all indoor units is displayed if the air condi-

tioner consists of 2 indoor units (twin).

Error history 1 (latest)

Error history 2 (second to last)

Error history 3 (third to last)

Abnormal thermistor display

(TH3/TH6/TH7/TH8)

Operation mode at time of error

Compressor-Operating current at time of error

Compressor-Accumulated operating time at time of error

Compressor-Number of operation times at time of error

Discharge temperature at time of error

Outdoor unit - Liquid pipe 1 temperature (TH3) at time of error

Outdoor unit - Liquid pipe 2 temperature at time of error

Outdoor unit-2-phase pipe temperature (TH6) at time of error

Outdoor unit-Outside air temperature (TH7) at time of error

Outdoor unit-Heatsink temperature (TH8) at time of error

Discharge superheat (SHd) at time of error

Sub-cool (SC) at time of error

Compressor-Operating frequency at time of error

Outdoor unit at time of error

• Fan output step

Outdoor unit at time of error

• Fan 1 speed (Only for air conditioners with DC fan)

Outdoor unit at time of error

• Fan 2 speed (Only for air conditioners with DC fan)

LEV (A) opening at time of error

LEV (B) opening at time of error

Thermo ON time until operation stops due to error

Indoor - Liquid pipe temperature at time of error

Indoor - Cond./Eva. temperature at time of error

Indoor at time of error

• Intake air temperature <Thermo judge temperature>

Indoor - Actual intake air temperature

Indoor - Liquid pipe temperature

Indoor - Cond./Eva. temperature

Pressure saturation temperature (T

63HS) at time of error

-39 – 88



OCH526B

100

Request code

Request content

Description

(Display range)

Unit Remarks

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

189

190

191

192

764

765

766

767

0 – 9999

0 –

255

Fan control data

00 **" "**" indicates fan control data.

"00 **" "**" indicates fan control data.

Refer to 12-2-1 Detail Contents in Request Code.

Undefined

Refer to

12-2-1 Detail Contents in Request Code.

Undefined

Auxiliary information (displayed after version information)

1 hour

10 hours

–

Ver

–

For indoor fan phase control

For indoor fan pulsation control

For indoor DC brushless motor control

Indoor-Fan operating time

(After filter is reset)

Indoor-Total operating time

(Fan motor ON time)

Indoor fan output value (Sj value)

Indoor fan output value

(Pulsation ON/OFF)

Indoor fan output value (duty value)

Indoor unit-Model setting information

Indoor unit-Capacity setting information

Indoor unit-SW3 information

Wireless pair No. (indoor control board side) setting

Indoor unit-SW5 information

Indoor unit-Microprocessor version information

Indoor unit-Microprocessor version information (sub No.)

Stable operation (Heat mode)

Stable operation (Cool mode)

Stable operation cancellation

This request code is not provided to collect data. It is used to fix the operation state.

This request code is not provided to collect data. It is used to cancel the operation state that has been

fixed by request codes "765" and "766".

Refer to 12-2-1 Detail Contents in Request Code.

OCH526B

Mitsubishi PUHZ-SHW80VHA-BS, PUHZ-SHW112VHA, PUHZ-SHW112VHA-BS, PUHZ-SHW112YHA-BS, PUHZ-SHW140YHA-BS Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual