Mitsubishi PUHZ-P100VHA2.UK, PUHZ-P125VHA2.UK, PUHZ-P125VHA21.UK, PUHZ-P140VHA2.UK, PUHZ-P140VHA21.UK Service Manual

...

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

R410A

Outdoor unit [model names] PUHZ-P100VHA2

PUHZ-P125VHA2

PUHZ-P140VHA2

PUHZ-P100VHA3 PUHZ-P125VHA3

[Service Ref.]

PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P125VHA21.UK PUHZ-P140VHA2.UK PUHZ-P140VHA21.UK PUHZ-P100VHA3.UK PUHZ-P125VHA3.UK

March 2009

No.OCH415

REVISED EDITION-B

Revision:

• PUHZ-P100/125/140VHA3. UK are added in REVISED EDITION-B.

• Some descriptions have been modified.

•

Please void OCH415

REVISED EDITION-A.

Note:

• This manual describes only

service data of the outdoor units.

• RoHS compliant products

have <G> mark on the spec name plate.

PUHZ-P140VHA3

PUHZ-P140VHA3.UK

CONTENTS

1. TECHNICAL CHANGES

2. REFERENCE MANUAL

3. SAFETY PRECAUTION

4. FEATURES

5. SPECIFICATIONS

6. DATA

7. OUTLINES AND DIMENSIONS

8. WIRING DIAGRAM

9. WIRING SPECIFICATIONS

10.

REFRIGERANT SYSTEM DIAGRAM

11. TROUBLESHOOTING

12. FUNCTION SETTING

13. EASY MAINTENANCE FUNCTION

14.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

15. DISASSEMBLY PROCEDURE

PARTS CATALOG (OCB415)

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2 3 6

8 11 13

78 81

PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK

TECHNICAL CHANGES

PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK PUHZ-P125VHA2

1.UK PUHZ-P125VHA3.UK

PUHZ-P140VHA21.UK PUHZ-P140VHA3.UK

OUTDOOR CONTROLLER BOARD (C.B) has been changed. (Corresponding to the additional combination between PKA-RP

* In case of UL error, the compressor may be damaged if the unit is restarted by remote controller. To avoid the damage, unit has the system that is not able to be restarted unless the power is turned OFF once.

•HAL/KAL, PCA-RP•KA and PEAD-RP•JA(L))

PUHZ-P125VHA2.UK PUHZ-P125VHA21.UK PUHZ-P140VHA2.UK PUHZ-P140VHA21.UK

4-WAY VALVE and COIL (21S4) have been changed.

REFERENCE MANUAL

INDOOR UNIT’S SERVICE MANUAL

Model name Service Ref.

PLA-RP50/60/71/100/125/140BA PLA-RP140BA2

PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA(#1) PCA-RP50GA2 PCA-RP50GA2(#1)

PCA-RP71/125HA

PKA-RP50GAL PKA-RP50GAL(#1)

PKA-RP60/71/100FAL PKA-RP60/71/100FAL(#1) PKA-RP50FAL2 PKA-RP50FAL2(#1)

PEAD-RP50/60/71/125/140EA PEAD-RP100EA2

PEAD-RP60/71/100GA

PKA-RP60/71/100KAL

PKA-RP35/50HAL

PCA-RP50/60/71/100/125/140KA

PLA-RP50/60/71/100/125/140BA(#2).UK PLA-RP50/60/71BA PLA-RP140BA2R1.UK

PCA-RP71/125HA(#1)

PEAD-RP50/60/71/125/140EA(#1).UK PEAD-RP100EA2(#1).UK

PEAD-RP60/71/100GA(#1).UK

PKA-RP60/71/100KAL.TH

PKA-RP35/50HAL

PCA-RP50/60/71/100/125/140KA

1.UK

Service

Manual No.

OCH412 OCB412

OC328

OC329

OC330

OC331

HWE0521

HWE0506

OCH452

OCB452

OCH453 OCB453

OCH454

OCB454

SAFETY PRECAUTION

3-1. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Use new refrigerant pipes.

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

· Be sure to clean the pipes and make sure that the insides of the pipes are clean.

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

· Avoid using thin pipes.

Make sure that the inside and outside of refrigerant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thickness.

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

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

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

Do not use refrigerant other than R410A.

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

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.

Tools for R410A Gauge manifold Charge hose

Gas leak detector

Torque wrench

Flare tool Size adjustment gauge Vacuum pump adaptor

Electronic refrigerant charging scale

Handle tools with care.

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

Use ester oil, ether oil or alkylbenzene oil (small amount) as the refrigerant oil applied to flares and flange connections.

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

Do not use a charging cylinder.

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

Ventilate the room if refrigerant leaks during

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.

operation. If refrigerant comes into contact with a flame, poisonous gases will be released.

[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.)

Unit

Gravimeter

[3] Service tools

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

No. Tool name Specifications

1 Gauge manifold · Only for R410A

· Use the existing fitting

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

2 Charge hose · Only for R410A

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

3 Electronic scale

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

5 Adaptor for reverse flow check · Attach on vacuum pump.

6 Refrigerant charge base

7 Refrigerant cylinder · Only for R410A · Top of cylinder (Pink)

· Cylinder with syphon

8 Refrigerant recovery equipment

specifications

. (UNF1/2)

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 time higher than that of R22, their sizes of flared sections and flare nuts are different.

1Thickness 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 0.7mm or below.)

Diagram below: Piping diameter and thickness

Nominal

dimensions(inch)

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

Outside

diameter

6.35

9.52

12.70

15.88

19.05

(mm)

Thickness

R410A R22

0.8

1.0

—

(mm)

0.8

1.0

2Dimensions 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 refriger ants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been speci fied separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also have 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.

Dimension A

Flare cutting dimensions

Nominal

dimensions(inch)

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

Outside

diameter

6.35

9.52

12.70

15.88

19.05

Dimension A

R410A R22

9.1

13.2

16.6

19.7

—

( )

-0.4

9.0

13.0

16.2

19.4

23.3

(mm)

Flare nut dimensions

dimensions(inch)

Nominal

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

Outside

diameter

6.35

9.52

12.70

15.88

19.05

R410A

17.0

22.0

26.0

29.0

—

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

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

: 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.

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 Refrigerant charge 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 and alkylbenzene oil (minimum amount) Tool exclusive for R410A

Tool exclusive for R410A

Tools for other refrigerants can be used if equipped with adopter 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

(Usable if equipped

with adopter for rever se flow)

(Usable by adjusting flaring dimension)

Dimension B

(mm)

Dimension B

R22

17.0

22.0

24.0

27.0

36.0

Can R407C tools be used?

Ester oil: Alkylbenzene oil: minimum amount

(Usable if equipped

with adopter for rever se flow)

(Usable by adjusting

flaring dimension)

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

4 FEATURES

PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA21.UK PUHZ-P125VHA3.UK

PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK

CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m (PUHZ-P125/P140))

The refrigerant circuit with LEV (Linear Expansion Valve) and Accumulator always control the optimal refrigerant level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during installation often causes problems. Heretofore it is completely eliminated. This unique system improves the quality and reliability of the work done. It also helps to speed up the installation time.

PUHZ-P140VHA3.UK

1.UK

5 SPECIFICATIONS

Service Ref.

Mode

Power supply (phase, cycle, voltage)

Running current

Max. current External finish Refrigerant control Compressor Model Motor output Starter type Protection devices

Crankcase heater Heat exchanger Fan Fan(drive) % No. Fan motor output Airflow

OUTDOOR UNIT

Defrost method Noise level

Dimensions

Weight Refrigerant Charge Oil (Model) Pipe size O.D.

Connection method

Between the indoor & outdoor unit

REFRIGERANT PIPING

/min(CFM

Cooling Heating

D H

mm(in.) mm(in.) mm(in.)

kg(lbs)

Liquid

Gas

mm(in.)

mm(in.) Indoor side Outdoor side Height difference Piping length

A A

dB dB

PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK

Cooling

Heating

Single, 50Hz, 230V

12.26

12.62

Munsell 5Y 7/1

Linear Expansion Valve

Hermetic

TNB220FLHMT

2.9

Inverter

HP switch

Discharge thermo

—

Plate fin coil

Propeller fan % 1

0.060

)

60(2120)

Reverse cycle

50 54

950(37-3/8)

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

943(37-1/8)

75(165)

R410A

3.0(6.6)

0.87(FV50S)

9.52(3/8)

15.88(5/8) Flared Flared

Max. 30m Max. 50m

Service Ref.

Mode

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

Crankcase heater Heat exchanger Fan Fan(drive) % No. Fan motor output Airflow

OUTDOOR UNIT

Defrost method Noise level

Dimensions

Weight Refrigerant Charge Oil (Model) Pipe size O.D.

Connection method

Between the indoor & outdoor unit

REFRIGERANT PIPING

/min(CFM

Cooling

Heating

D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

mm(in.) mm(in.) mm(in.)

kg(lbs)

mm(in.) mm(in.)

A A

dB dB

PUHZ-P125VHA2.UK PUHZ-P125VHA2 PUHZ-P125VHA3.UK

Cooling

17.37 28

3.4

)

51 55

1.UK

Heating

Single 50Hz, 230V

16.74

Munsell 5Y 7/1

Linear Expansion Valve

Hermetic

TNB306FPGM

Inverter

HP switch

Discharge thermo

Plate fin coil

Propeller fan % 2

0.060+0.060 100(3,530)

Reverse cycle

950(37-3/8)

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

1,350(53-1/8)

99(218)

R410A

4.5(9.9)

0.87(FV50S)

9.52(3/8)

15.88(5/8) Flared Flared

Max. 30m Max. 50m

PUHZ-P140VHA2.UK PUHZ-P140VHA2

PUHZ-P140VHA3.UK

Cooling

22.48

29.5

3.9

52 56

1.UK

Heating

21.31

6 DATA

6-1. REFILLING REFRIGERANT CHARGE (R410A : kg)

Service Ref.

PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK

PUHZ-P125VHA2.UK PUHZ-P125VHA2 PUHZ-P125VHA3.UK

PUHZ-P140VHA2.UK PUHZ-P140VHA2 PUHZ-P140VHA3.UK

1.UK

10m

2.9

4.3

Piping length (one way)

20m

3.0

4.4

6-2. COMPRESSOR TECHNICAL DATA

Unit

Compressor model

Winding

Resistance

(  )

U-V

U-W

W-V

PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK

TNB220FLHMT

0.88

PUHZ-P125,140VHA2.UK PUHZ-P125,140VHA21.UK PUHZ-P125,140VHA3.UK

TNB306FPGM

0.53

30m

3.6

4.5

(at 20˚C)

Initial

40m

4.2

5.1

Longer pipe than 20 or 30m, additional charge is required.

50m

4.8

5.7

charged

3.0

4.5

6-3. NOISE CRITERION CURVES

MICROPHONE

1.5m

UNIT

PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK

MODE

COOLING

HEATING

SPL(dB)

LINE

NC-70

PUHZ-P125VHA2.UK PUHZ-P125VHA2

1.UK

PUHZ-P125VHA3.UK

MODE

COOLING

HEATING

GROUND

SPL(dB)

51 55

LINE

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS

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

NOISE

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

PUHZ-P140VHA2.UK PUHZ-P140VHA2

1.UK

PUHZ-P140VHA3.UK

MODE

COOLING

HEATING

SPL(dB)

52 56

NC-60

NC-50

NC-40

NC-30

NC-20

LINE

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

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

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

APPROXIMATE

THRESHOLD OF HEARING FOR CONTINUOUS NOISE

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

NC-70

NC-60

NC-50

NC-40

NC-30

NC-20

6-4. STANDARD OPERATION DATA

Representative matching

Mode

Capacity

To ta lElectrical circuitRefrigerant circuitIndoor side

Input

Indoor unit

Phase , Hz

Volts

Input

Amperes

Outdoor unit

Phase , Hz

Volts

Current

Discharge pressure

Suction pressure

Discharge temperature

Condensing temperature

Suction temperature

Ref. pipe length

Intake air temperature

Discharge air temperature

Intake air temperature

side

Outdoor

SHF

D.B.

W.B.

D.B.

W.B.

MPa

(.f/%)

MPa

(.f/%)

°C

PLA-RP100BA PLA-RP125BA PLA-RP140BA(2)

Cooling

9,400

3.12

PLA-RP100BA PLA-RP125BA PLA-RP140BA(2)

0.14

0.94

PUHZ-P100VHA2 PUHZ-P100VHA3

12.26

2.90

(29.6)

0.92

(9.4)

72.7

48.6

10.1

14.8

0.74

Heating

11, 200

3.28

1 , 50

230

0.13

0.87

1 , 50

230

12.62

2.57

(26.2)

0.62

(6.3)

75.5

41.4

0.1

43.4

—

Cooling

12,300

4.09

0.15

1.00

PUHZ-P125VHA2 PUHZ-P125VHA3

17.37

2.68

(27.3)

0.86

(8.8)

67.8

45.5

6.8

13.6

0.71

1 , 50

230

1 , 50

230

Heating

14,000

4.11

0.14

0.94

16.74

2.56

(26.1)

0.68 (6.9)

64.5

43.4

1.3

44.2

—

Cooling

13,600

5.21

1 , 50

230

0.16

1.07

PUHZ-P140VHA2 PUHZ-P140VHA3

1 , 50

230

22.48

2.79

(28.5)

0.79

(8.1)

72.7

47.0

4.4

12.9

0.71

Heating

16,000

4.98

0.15

1.00

21.31

2.75

(28.1)

0.64 (6.5)

70.8

47.2

1.0

48.0

—

0.21

—

0.18

—

The unit of pressure has been changed to MPa based on international SI system. The conversion factor is : 1(MPa)=10.2(kgf/cm²)

0.14

—

7 OUTLINES AND DIMENSIONS

417

66 42

(19)37028

175600175

330

2-12%36 oval holes

(Foundation Bolt M10)

Air Discharge

Rear Air Intake

Side Air Intake

2-U Shaped notched holes

(Foundfation Bolt M10)

Installation Feet

Over

Less than

Piping and wiring connections

can be made from 4 directions:

front, right rear and below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Piping Knockout Hole Details

Example of Notes

···Refrigerant GAS pipe connction (FLARE)W15.88(5/8 inch)

···Refrigerant LIQUID pipe connection (FLARE)W 9.52(3/8 inch)

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

The diagram below shows a

basic example.

Explantion of particular details is

given in the installation manuals etc.

Over10

500

Over100

Dimensions of space needed

for service access are

shown in the below diagram.

Service space

Please secure the unit firmly

with 4 foundation (M10) bolts.

(Bolts and washers must be

purchased locally.)

Handle for moving

Side Air Intake

Front piping cover

Rear piping cover

14522030 145

81 219

145

Drain hole

(5-W33)

Bottom piping hole

(Knockout)

Air Intake

Rear Air Intake

Handle for moving

943

473

950

322

+1 447

+1 443

670

Terminal Connections

Left···Power supply wiring

Reight···Indoor/Outdoor wiring

Earth terminal

Service panel

Handle for moving

19 55

23 27 92

4075

73 63

Right piping hole

(Knockout)

Right trunking hole

(Knockout)

Power supply wiring hole

(2-W27Knockout)

27 55

Front piping hole

(Knockout)

Front trunking hole

(Knockout)

Power supply wiring hole

(2-W27Knockout)

4045

27 55

23 73 63

Rear piping hole

(Knockout)

Rear trunking hole

(Knockout)

Power supply wiring hole

(2-W27Knockout)

FOUNDATION

Over 10mm

Over 5

00mm

Over 1

00mm

FREE

OUTDOOR UNIT PUHZ-P100VHA2.UK PUHZ-P100VHA3.UK

Unit : mm(inch)

PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2

1.UK

PUHZ-P125VHA3.UK PUHZ-P140VHA3.UK

(19)28 370

2-U Shaped notched holes

(Foundation Bolt M10)

417

Unit : mm(inch)

1076

53 56

2-12 x 36 Oval holes

(Foundation Bolt M10)

Terminal connection

Left···Power supply wiring

Right···Indoor/Outdoor wiring

Service panel

Handle for moving

+1 447

+1 443

Front piping cover

Rear piping cover

Bottom piping hole

(Knockout)

Drain hole

(5-W33)

Rear Air Intake

600175 175

Installation Feet

330

Air Discharge

Side Air Intake

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

4 PIPING-WIRING DIRECTIONS

FOUNDATION

Please secure the unit firmly

with 4 foundation (M10) bolts.

(Bolts and washers must be

purchased locally.)

3 FOUNDATION BOLTS

2 SERVICE SPACE

Dimensions of space needed

for service access are

shown in the below diagram.

150

Over

FREE

Over

r 150mm

Ove

500

Less than

Over

500

Over

Service space

Over 10mm

950

Earth terminal

322

Handle for moving

Side Air Intake

Rear Air Intake

635

1350

Handle for moving

371

Air intake

27Knockout)

Power supply wiring hole

(2-

Rear trunking hole

(Knockout)

45 40

Right trunking hole

(Knockout)

27Knockout)

Power supply wiring hole

(2-

75 40

Right piping hole

(Knockout)

4540

27Knockout)

Power supply wiring hole

(2-

81 219

73 63

14514522030 145

Rear piping hole

(Knockout)

27 55

23 73 63

19 55

73 63 23 27 92

27 55

1 FREE SPACE (Around the unit)

The diagram below shows a

basic example.

Explantion of particular details is

given in the installation manuals etc.

Over 10mm

Over 1000mm

Example of Notes

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

···Refrigerant GAS pipe connction (FLARE)W15.88(5/8 inch)

···Refrigerant LIQUID pipe connection (FLARE)W 9.52(3/8 inch)

Piping Knockout Hole Details

Front trunking hole

(Knockout)

Front piping hole

(Knockout)

8 WIRING DIAGRAM

PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P100VHA3.UK PUHZ-P125VHA3.UK PUHZ-P140VHA3.UK

SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 MC MF1,MF2 21S4 SV Solenoid Valve (Bypass Valve) CH Crankcase Heater 63H TH3 TH4 TH6 TH7 TH8 LEV-A DCL ACTM CB

Terminal Block<Power Supply, Indoor/Outdoor > Motor Compressor Fan Motors Solenoid Valve (Four-Way Valve)

High Pressure Switch

Thermistor<Outdoor Pipe>

Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor> Thermistor<Heatsink> Electronic Expansion Valve

Reactor Active Filter Module Main Smoothing Capacitor

1.UK PUHZ-P140VHA21.UK

P. B.

TABU/V/W TAB S/T TABP1/P2/P TABN1/N2/N DS2,3

IPM N.F. C.B.

F1~F4

Power Circuit Board Connection Terminal<U/V/W-Phase> Connection Terminal<L/N- Phase> Connection Terminal<DC Voltage> Connection Terminal<DC Voltage> Diode Bridge Power Module Noise Filter Circuit Board Controller Circuit Board Fuse<T6.3AL250V>

SW1

Switch<Forced Defrost, Defect History Record Reset, Refrigerant Address>

SW4

Switch<Test Operation>

SW5

Switch<Function Switch>

SW6

Switch<Model Select>

SW7

Switch<Function Setup>

Switch

SW8 SW9

Switch

SWP

Switch<Pump Down>

CN31

Connector<Emergency Operation>

LED1,LED2

Light Emitting Diodes <Operation Inspection Indicators>

CNM

Connector<A-Control Service Inspection Kit> Connector<Connected to Optional M-NET Adapter Board>

CNMNT CNVMNT

Connector<Connected to Optional M-NET Adapter Board>

CNDM

Connector<Connected for Option (Contact Input)>

X51,X52,X54,X55

Relay

+ 2

MF1

MS 3~

MF2

MS 3~

C.B.

CNS

WHT)

(

TH8

63H

TH7 TH6 TH3 TH4

TRANS

CNAC

(

tttt

TH7/6 (RED)

WHT)

122

TH3

TH4

(WHT)

63H

(YLW)

CN2

(WHT)

CNF1

(WHT)

CNF2

WHT)

(

CNDC

(

PNK)

LED2

21S4

(GRN)

LEV-A

LEV-A (WHT)

LED1

CN4

(WHT)

X52

X55

21S4

SV2

(BLU)

SV + 2

CNVMNT

(WHT)

CNM

(WHT)

X54

SV1/CH

(GRY)

CNMNT

(WHT)

CN52C (RED)

SW5SW8SW4 SWP

X51

(WHT)

When M-NET adaptor is connected

+ 1+ 1

SW7

SW6SW1

SW9

CN31

CNDM

(WHT)

CN51

(WHT)

ABS

SW1

CN5

(WHT)

LED2 LED3 LED4

M-NET SUBSTRATE

2 1

CN2M

(WHT)

LED5

TB7

M-NET

SW11

SW12

CND

(WHT)

LED1

N.F.

52C

P. B .

CNAF

(WHT)

CN2

IPM

(WHT)

7 1

CN3

(WHT)

2 1

(RED)

2 1

(WHT)

TABN

TABP

CN5

CN4

TAB P2

TAB URED

UVW

TABVWHT

BLK

–

TABW

CNDC (PNK)

TAB N1

TABT

DS3

–~

TABS

DS2

–

TABP1

TAB N2

(RED)

CNAC2

(WHT)

CNAC1

CN52C

CN5

(BLK)

(RED)

DCL

—

ACTM

L1 L2

N1 N2

POWER SUPPLY ~/N 230V 50Hz

INDOOR UNIT

CY1 CY2

+ 1 MODEL SELECT

S3S2S1NL

TB1

MODEL

SW5-6

100V

OFF

123456

125V

OFF

123456

140V

OFF

123456

+ 2 P125, P140 only + 3 SW5-1 to 5: Function Switch

SW6

ON OFF

123456

ON OFF

123456

ON OFF

123456

9 WIRING SPECIFICATIONS

9-1. FIELD ELECTRICAL WIRING (power wiring specifications)

Outdoor unit model Outdoor unit power supply

Outdoor unit input capacity *1 Main switch (Breaker)

Outdoor unit power supply

)

Outdoor unit power supply earth

ing

Indoor unit-Outdoor unit *2

Wir

Indoor unit-Outdoor unit earth *2

Wire No. %

size (mm

Remote controller-Indoor unit *3 Outdoor unit L-N (single) Outdoor unit L1-N, L2-N, L3-N (3 phase) Indoor unit-Outdoor unit S1-S2 *4 Indoor unit-Outdoor unit S2-S3 *4

Circuit rating

Remote controller-Indoor unit *4

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker(NV). *2. Refer to 8-3. *3. The 10 m wire is attached in the remote controller accessory. *4. The figures 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.

P100, 125V P140V

~/N (single), 50 Hz, ~/N (single), 50 Hz,

230 V 230 V

32 A 40 A

2 % Min. 4 2 % Min. 6 1 % Min. 4 1 % Min. 6

3 % 1.5 (Polar) 3 % 1.5 (Polar)

1 % Min. 1.5 1 % Min. 1.5

2 % 0.3 (Non-polar) 2 % 0.3 (Non-polar)

AC 230 V AC 230 V

DC 24 V DC 24 V DC 12 V DC 12 V

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

2. Power supply cords and Indoor/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)

3. Install an earth longer than other cables.

230V

Single phase

Isolator

3 poles isolator

A-Control

Outdoor Unit

A-Control

Indoor Unit

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.

1:1 system Synchronized twin and triple system Electrical wiring

• Synchronized twin

Unit power supply



 Earth leakage breaker  wiring circuit breaker or

isolating switch

Outdoor unit



Indoor/outdoor unit connection cable

S1 S2 S3

Indoor unit

S1 S2 S3

Remote controller

Unit power



supply

 Earth leakage breaker  wiring circuit breaker or

isolating switch

Outdoor unit



Indoor/outdoor unit connection cable

S1 S2 S3

Indoor unit

S1 S2 S3

1 2

• Synchronized triple

Remote controller

Indoor unit

1 2

S1 S2 S3

Unit power



supply

 Earth leakage breaker  wiring circuit breaker or

isolating switch

Outdoor unit

L N



Indoor/outdoor connection cable

S1 S2 S3

Indoor unit

S1 S2 S3

1 2

Remote controller

Indoor unit

1 2

S1 S2 S3

Indoor unit

1 2

S1 S2 S3

9-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES

The following connection patterns are available. The outdoor unit power supply patterns vary on models.

1:1 System

* The optional indoor power supply terminal kit is required.



L N







S1 S2 S3



L N







S1 S2 S3

1 2

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Simultaneous twin/triple system

* The optional indoor power supply terminal kits are required.



 







* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units.

If the indoor and outdoor units have separate power supplies, refer to the table below. If the optional indoor power supply terminal kit is used, change the indoor unit electrical box wiring refering to the figure in the right and the DIP switch settings of the outdoor unit control board.

Indoor unit specifications Indoor power supply terminal kit (option) Indoor unit electrical box connector connection change Label affixed near each wiring diagram for the indoor and outdoor units Outdoor unit DIP switch settings (when using separate indoor unit/outdoor unit power supplies only)

Required

ON OFF 1 2

Set the SW8-3 to ON.

(SW8)







Electric heater (For models with heater)



Indoor unit power supplied from outdoor unit (when shipped from factory)





Connectors (connections when shipped from the factory are for indoor unit power supplied from outdoor unit)

BLUE

YELLOW

CND or

CN01

control board



Indoor unit

* There are three types of labels (labels A, B and C). Affix the appropriate labels to

the units according to the wiring method.

 Outdoor unit power supply  Earth leakage breaker  Wiring circuit breaker or isolating switch  Outdoor unit  Indoor unit/outdoor unit connecting cords  Remote controller  Indoor unit  Option

Indoor unit power supply



Outdoor unit power supply



Earth leakage breaker



Wiring circuit breaker or isolating switch



Outdoor unit



Indoor unit/outdoor unit connecting cords



Remote controller



Indoor unit



Option



Indoor unit power supply



Indoor unit earth



If the indoor and outdoor units have separate power supplies, change the connections of the connectors as shown in the following figure.

Electric heater (For models with heater)



Separate indoor unit/outdoor unit power supplies

YELLOW

BLUE

YELLOW

CN01

CND or

Connectors

Indoor unit

control board

Indoor unit model Indoor unit power supply Indoor unit input capacity Main switch (Breaker)

Indoor unit power supply Indoor unit power supply earth

)

Indoor unit-Outdoor unit

(mm

Wiring

Indoor unit-Outdoor unit earth

Wire No. % size

Remote controller-Indoor unit

Indoor unit L-N *4

Indoor unit-Outdoor unit S1-S2 *4 Indoor unit-Outdoor unit S2-S3 *4

rating

Circuit

Remote controller-Indoor unit *4

RP35~140

~/N (single), 50 Hz, 230 V

16 A

2 % Min. 1.5 1 % Min. 1.5 2 % Min. 0.3

–

2 % 0.3 (Non-polar)

AC 230 V

– DC24 V DC12 V

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). *2. Max. 120 m *3. The 10 m wire is attached in the remote controller accessory. Max. 500 m *4. The figures are NOT always against the ground.

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

2. Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 60245 IEC 57)

3. Install an earth longer than other cables.

9-3. INDOOR – OUTDOOR CONNECTING CABLE

The cable shall not be lighter than design 60245 IEC or 60227 IEC.

The cable length may vary depending on the condition of installation, humidity or materials, etc.

Cross section

of cable

Round

Wire size

)

(mm

2.5

Number of wires

Polarity L(m) *5

Clockwise : S1-S2-S3

Flat

2.5

Not applicable (Because center wire has no cover finish)

Flat

1.5

From left to right : S1-Open-S2-S3

Round

2.5

*1 : In case that cable with stripe of yellow and green is available. *2 : In case that the flat cables are connected as this picture, they can be used up to 80m.

(3C Flat cable × 2)

S1 S2 S3

*3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm *4 : In case of regular polarity connection (S1-S2-S3) *5 : Mentioned cable length is just a reference value. It may be different depending on the condition of installation, humidity or materials, etc.

Clockwise : S1-S2-S3-Open Connect S1 and S3 to the opposite angle

Not

applicable

Wire No. % Size ($)

Outdoor power supply

Max. 45m

Indoor unit-Outdoor unit

Indoor unit-Outdoor unit earth

+ The Max. cable length may vary depending on the condition of installation, humidity or materials, etc.

3 % 1.5 (polar)

1 % Min. 1.5

Indoor/Outdoor separate power supply

Indoor unit-Outdoor unit

Indoor unit-Outdoor unit earth

+ The optional indoor power supply terminal kit is necessary.

Be sure to connect the indoor-outdoor connecting cables directly to the units (no intermediate connections).

Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to

earth or a poor electrical contact at the intermediate connection point.

Max. 50m

3 % 2.5 (polar)

1 % Min. 2.5

Wire No. % Size ($)

2 % Min. 0.3

Max. 80m

3 % 2.5 (polar) and S3 separated

1 % Min. 2.5

Max. 120m

—

9-4. M-NET WIRING METHOD

(Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from

making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same

conduit tube. (2) Terminal block (TB7) for transmission wires should never be connected to V power supply. If it is connected, electronic parts on M-NET P.C. board may be burn out. (3) Use 2-core x 1.25mm² shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent or

received normally if different types of transmission wires are put together in the same multi-conductor cable. Never do this

because this may cause a malfunction.

Group remote controller

Power supply unit for transmission wire

A-control remote

It would be ok if M-NET wire (non-polar, 2-cores) is arranged in addition to the wiring for A-control.

(4) Earth only one of any appliances through M-NET transmission wire (shield wire). Communication error may occur due to

the influence of electromagnetic noise. “Ed” error will appear on the LED display of outdoor unit. “0403” error will appear on the central-control remote controller.

 Bad example (Multi spot earthing of shield wire)

Central remote controller

M-NET transmission wire

controller

Power supply appliance

Refrigerant address 00

M-NET address 01

M-NET type outdoor unit

A-control remote controller

Refrigerant address 00

M-NET address 02

M-NET type outdoor unit

A-control remote controller

Refrigerant address 00

M-NET address 03

Good example 1 (Single spot earthing of shield wire)

Central remote controller

M-NET transmission wire

Good example 2 (Single spot earthing of shield wire)

Central remote controller

M-NET transmission wire

If there are more than 2 grounding spots on the shield wire, noise may enter into the shield wire because the earth wire

and shield wire form 1 circuit and the electric potential difference occurs due to the impedance difference among earthing

spots. In case of single spot grounding, noise does not enter into the shield wire because the earth wire and shield wire do

not form 1 circuit.

To avoid communication errors caused by noise, make sure to observe the single spot grounding method described in the

installation manual.

Power supply appliance

M-NET type outdoor unit

M-NET wiring

(1) Use 2-core x 1.25mm² shield wire for electric wires. (Excluding the case connecting to system controller.) (2) Connect the wire to the M-NET terminal block. Connect one core of the trans-

mission wire (non-polar) to A terminal and the other to B. Peel the shield wire,

twist the shield part to a string and connect it to S terminal. (3) In the system which several outdoor units are being connected, the terminal (A, B, S) on M-NET terminal block should be individually wired to the other

M-NET terminal block

ABS

Transmission

wire

Earth wire

Shield part

outdoor unit’s terminal, i.e. A to A, B to B and S to S. In this case, choose one of those outdoor units and drive a screw

to fix an ground wire on the plate as shown on the right figure.

9-4-1. M-NET address setting

In A-control models, M-NET address and refrigerant address should be set only for the outdoor unit. Similar to CITY MULTI system, there is no need to set the address of outdoor unit and remote controller. To construct a central control system, the setting of M-NET address should be conducted only upon the outdoor unit. The setting range should be 1 to 50 (the same as that of the indoor unit in CITY MULTI system), and the address number should be consecutively set in a same group.

Address number can be set by using rotary switches (SW11 for ones digit and SW12 for tens digit), which is located on the M-NET board of outdoor unit. (Factory setting: all addresses are set to “0”.)

M-NET Address No.

SW11

Switng setting

ones digit

SW12 tens digit

9-4-2. Refrigerant address setting

In case of multiple grouping system (multiple refrigerant circuits in one group), indoor units should be connected by remote controller wiring (TB5) and the refrigerant address needs to be set. Leave the refrigerant addresses to “00” if the group setting is not conducted. Set the refrigerant address by using DIP SW1-3 to -6 on the outdoor controller board. [Initial setting: all switches are OFF. (All refrigerant addresses are “00”.)]

Refrigerant address

OFF

9-4-3. Regulations in address settings

In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above section. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address.

Group A Group B Group C

System controller

Power supply unit for transmission wire

Refrigerant address 00

M-NET address 01

A-control remote controller

w Refrigerant addresses can be overlapped if they are in the different group.

Group A Group B

System controller

Power supply unit for transmission wire

Refrigerant address 00

M-NET address 01

A-control remote controller

Refrigerant address 00

M-NET address 02

A-control remote controller

Refrigerant address 01

M-NET address 02

TB5

Refrigerant address 01

M-NET address 03

Refrigerant address 00

M-NET address 04

A-control remote controller

Refrigerant address 00

M-NET address 04

A-control remote controller

Refrigerant address 01

M-NET address 03

Refrigerant address 02

M-NET address 05

w In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As

“3” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in the group for the outdoor unit whose refrigerant address is “00”.

10 REFRIGERANT SYSTEM DIAGRAM

PUHZ-P100VHA2.UK

PUHZ-P100VHA3.UK

Unit : mm(inch)

Refrigerant flow in cooling Refrigerant flow in heating

Service port

Stop valve

Refrigerant GAS pipe

15.88mm(:5/8)

Refrigerant LIQUID pipe

9.52mm(:3/8)

PUHZ-P125VHA2.UK PUHZ-P125VHA21.UK PUHZ-P125VHA3.UK

PUHZ-P125VHA2.UK PUHZ-P125VHA21.UK

PUHZ-P140VHA2.UK PUHZ-P140VHA2

(#50)

Strainer

Service port (check)

Accumulator

Strainer (#40)

Stop valve (with service port)

4-way valve

Muffler

Compressor

.UK PUHZ-P140VHA3.UK

1.UK

(check)

Thermistor (TH4)

High pressure protect switch

Outdoor heat exchanger

(#100)

Strainer

Linear expansion valve

Thermistor (TH6)

Thermistor (TH3)

Distributor

(#100)

Strainer

Stop valve

Refrigerant GAS pipe

15.88

mm(:

5/8)

Refrigerant LIQUID pipe

9.52

mm(:

3/8)

Stop valve

(with service port)

(#50)

Strainer

Service port (check)

Strainer (#40)

4-way valve

Accumulator

Bypass valve

Compressor

Strainer

(#100)

Service port (check)

High pressure protect switch

Muffler

Thermistor (TH4)

Strainer

(#100)

Linear expansion valve

Thermistor (TH6)

Distributor

Thermistor (TH3)

Capillary tube (

4.0%:3.0%-L200)%2

1. Refrigerant recovery (pump down)

Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit. 1Turn on the power supply (circuit breaker).

wWhen power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If

“CENTRALLY CONTROLLED” is displayed, the refrigerant recovering (pump down) cannot be completed normally.

2After the liquid stop valve is closed, set the SWP switch on the control board of the outdoor unit to ON. The compressor

(outdoor unit) and ventilators (indoor and outdoor units) start operating and refrigerant recovery operation begins. LED1 and LED2 on the control board of the outdoor unit are lit.

wSet the SWP switch (push-button type) to ON in order to perform refrigerant recovery operation only when the unit is

stopped. However, refrigerant recovery operation cannot be performed until compressor stops even if the unit is stopped. Wait 3 minutes until compressor stops and set the SWP switch to ON again.

3Because the unit automatically stops in about 2 to 3 minutes after the refrigerant recovering operation (LED1 is not lit and

LED2 is lit), be sure to quickly close the gas stop valve. wIn case the outdoor unit is stopped when LED1 is lit and LED2 is not lit, open the liquid stop valve completely, and then

repeat step 2 3 minutes later.

wIf the refrigerant recovering operation has been completed normally (LED1 is not lit and LED2 is lit), the unit will remain

stopped until the power supply is turned off.

4Turn off the power supply (circuit breaker.)

2. 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.

1Set the operation mode (cooling/heating) using SW4-2. 2Turn on SW4-1 to start test run with the operation mode set by SW4-2. 3Turn 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. But this is not a problem with product because the check valve itself generates the sound due to small pressure difference in the refrigerant circuit.

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.)

 Stop  Operation  Cooling  Heating

<SW4>



ON OFF



11 TROUBLESHOOTING

11-1. 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

The trouble is reoccurring.

The trouble is not reoccurring.

Error code

Displayed

Not displayed

Logged

Not logged

Actions to be taken for service (summary)

Judge what is wrong and take a corrective action according to “11-4. Self-diagnosis action table”.

Conduct trouble shooting and ascertain the cause of the trouble according to “11-5. Troubleshooting by inferior phenomena”.

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 concerning of parts such as electrical component, controller board, remote controller and etc.

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

of the trouble by inferior phenomena”. 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.

according to “11-5. Troubleshooting

11-2. CHECK POINT UNDER 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 leak-

age, 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.

wDo 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 12 hours before test run in order to protect compressor.

• For specific models which requires higher ceiling settings or auto-recovery feature from power failure, 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.)

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

Displays the remaining test run time.





[TEST] button



Pipe (liquid) temperature

Operating procedures

1. Turn on the main power supply.

2. Press TEST button twice.

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. +1

The TEST RUN appears on the screen.

Cooling mode: Heating mode: Check if warm air blows. (It takes a little while until warm air blows.)

Check for correct motion of auto-vanes.

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 if cool air blows and water is drained.

• 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 and triple operation. Malfunctions may not be displayed regardless of incorrect wiring. w1 After turning on the power supply, the system will go into start up mode, “PLEASE WAIT” will blink on the display section of the room temperature, and lamp(green) of the remote controller will blink. 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 light up. (After the start up 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 doesn’t function correctly, the causes written below should be considered. Find causes from the symptoms. The below symptoms are under test run mode. “start up” in the table means the display status of w1 written above.

Symptoms in test run mode

Remote Controller Display

Remote controller displays “PLEASE WAIT”, and

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.

cannot be operated.

OUTDOOR BOARD LED Display

< > indicates digital display.

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>

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

• Incorrect connection of outdoor terminal block (L 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 short.

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

• Remote controller transmission wire open.

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

system startup. (Normal)

Cause

1, L2, L3 and

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

display.

LCD

Abnormality of room temperature thermistor

Abnormality of pipe temperature thermistor/Liquid

Abnormality of drain sensor/Float switch connector open

Drain overflow protection is working. Freezing/overheating protection is working.

Abnormality of pipe temperature

Abnormality of pipe temperature thermistor/Cond./Eva

Abnormality of indoor controller board

Contents of trouble

LCD

U1~UP

Malfunction outdoor unit

F3~F9

Malfunction

E0~E5

Remote controller transmitting error Indoor/outdoor unit communication error

E6~EF

No error history

---No applied unit

FFFF

Forced compressor stop(due to water leakage abnormality)

outdoor unit

Contents of trouble

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

(microcomputer power supply)

LED1

(remote controller)

LED2

(indoor/outdoor communication)

LED3

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.

Flash when indoor and outdoor unit are communicating.



,



ON/OFF

MODE

CHECK

TEST RUN

SET

TEST RUN

FAN

VAN E

LOUVER

RESET

CLOCK

TEMP

AUTO STOP

AUTO START

min





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 button twice continuously.

(Start this operation from the status of remote controller display

turned off.)

TEST RU

and current operation mode are displayed. 3 Press the ( ) button to activate mode, then

check whether cool air is blown out from the unit.

4 Press the ( ) button to activate mode, then

check whether warm air is blown out from the unit.

5 Press the button and check whether strong air is blown out

from the unit.

6 Press the 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.

TEST RU

MODE

FAN

VAN E

COOL

HEAT

11-3. HOW TO PROCEED "SELF-DIAGNOSIS"















11-3-1. When a Problem Occurs During Operation

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

ON/OFF

button.

Error code (2 or 4 digits)



(Alternating Display)

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



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.

11-3-2. Self-Diagnosis During Maintenance or Service

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 shut off.



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



Switch to self-diagnosis mode.



Press the will change as shown below.

CHECK

button twice within 3 seconds. The display content

Unit number or refrigerant address to be diagnosed

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] o r [00]

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

an d

[15].



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.)

(Alternating Display)

Error code (2 or 4 digits)

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



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



 Press the

address or refrigerant address will flash.

 Cancel self-diagnosis.

Self-diagnosis can be cancelled by the following two methods.

 Press the

 Press the

ON/OFF

CHECK

ON/OFF

button twice within 3 seconds. The self-diagnosis

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

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

of self-diagnosis.

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.

11-3-3. Remote Controller Diagnosis

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.

Power on indicator

 Switch to the remote controller self-diagnosis mode.

 Press the

change as shown below.

CHECK

button for 5 seconds or more. The display content will

 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.

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

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.

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

The remote controller must be replaced with a new one.

(Error display 3)

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.

ing circuit is defective.

When the number of data errors is "02":

Transmission data from remote controller

Transmission data on transmission path

 To cancel remote controller diagnosis

 Press the

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

CHECK

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

11-3-4. Malfunction-diagnosis method by 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.

<Malfunction-diagnosis method at maintenance service>

[Procedure]

CHECK display

ON/OFF button

CHECK button

ON/OFF

MODE

CHECK

TEST RUN

SET

CHECK

FAN

VAN E

LOUVER

RESET

TEMP

AUTO STOP

AUTO START

CLOCK

min

Refrigerant address display

Temperature button

HOUR button

1. Press the CHECK button twice.

2. Press the temperature buttons.

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

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

• 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 intermit tent buzzer sound, the operation light flashes, and the error code is output. (It takes 3 seconds at most for error code to appear.)

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

• The check mode is cancelled.

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

Beeper sounds

OPERATION INDICATOR lamp blink pattern

Beep

Self-check starts (Start signal received)

Beep Beep Beep Beep Beep Beep

1st2nd3

Off

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

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

0.5 sec.

Off

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

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

1st2

· · · Repeated

[Output pattern B]

Beeper sounds

OPERATION INDICATOR lamp

blink

pattern

Beep Beep Beep Beep Beep Beep Beep

1st2nd3

Off

Self-check starts (Start signal received)

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

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

0.5 sec.

Off

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

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

1st2

[Output pattern A] Errors detected by indoor unit

Wireless remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

Wired remote controller

Symptom Remark

(Number of times)

1P1

P2 Pipe (TH2) sensor error P9 Pipe (TH5) sensor error

3E6,E7

Intake sensor error

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

–

12 Fb Indoor unit control system error (memory error, etc.)

–

E0, E3

Remote controller transmission error

– E1, E2 Remote controller control board error

[Output pattern B]

Wireless remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

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

Wired remote controller

Symptom Remark

(Number of times)

2 3 4

7 8 9

12 13 14

*1 If the beeper does not sound again after the initial

the OPERATION INDICATOR lamp does not come on,

*2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.4 sec.)” after the initial two beeps to confirm

the self-check start signal was received, the specified refrigerant address is incorrect.

UP U3,U4 UF

U1,Ud

U5 U8 U6 U7

U9,UH

– –

Others

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

Compressor overcurrent interruption Open/short of outdoor unit thermistors Compressor overcurrent interruption (When compressor locked) Abnormal high discharging temperature/49 worked/

insufficient refrigerant Abnormal high pressure (63H worked)/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

– –

Other errors

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

there are no error records.

· · · Repeated

As for indoor unit, refer to indoor units service manual.

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

11-4. SELF-DIAGNOSIS ACTION TABLE

Error Code

None —

Abnormal points and detection method

1 No voltage is supplied to terminal

block(TB1) of outdoor unit. a) Power supply breaker is

turned off.

b) Contact failure or disconnec-

tion of power supply terminal c) Open phase (L or N phase)

2 Electric power is not supplied

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 :Disconnection of connector

TABT or TABS

3 Electric power is not supplied to

outdoor controller circuit board. a) Disconnection of connector

(CNDC)

4 Disconnection of reactor (DCL)

(Note 1) Refer to indoor unit section for code P and code E. (P.33~35)

Case

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

Disconnection of connector TABT or TABS Refer to 11-9.

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

Refer to 11-9. 4 Check connection of reactor. (DCL) Check connection of “L1” and “L2” on the active filter module.(ACTM)

Judgment and action

power circuit board

(5201)

63H connector open

Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply. 63H: High-pressure switch

5 Disconnection of outdoor noise

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

It is especially needed to check

the resistance RS1 on the noise filter cuircuit board.

6 Defective outdoor power circuit

board

7 Defective outdoor controller circuit board

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

5 a) Check connection of outdoor noise filter circuit board. b) Replace outdoor noise filter circuit board.

Refer to 11-9.

6 Replace outdoor power circuit board.

7 Replace outdoor controller circuit board (When

items above are checked but the units cannot be repaired).

1 Check connection of 63H connector on outdoor controller circuit board. Refer to 11-9.

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.

Error Code

(6844)

(6845)

(6846)

Abnormal points and detection method Judgment and action

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”.

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.

Start-up time over

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

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.

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.

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.

Case

1 Check disconnection or looseness or polar-

ity 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.

7 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.

w The descriptions above, 1-8, are for EA, Eb

and EC.

Error Code

(1302)

(1102)

Abnormal points and detection method

High pressure (High-pressure switch 63H worked)

Abnormal if high-pressure switch 63H worked ( w ) during compressor operation. w 4.15 MPa

63H: High-pressure switch

High discharging temperature

(1) Abnormal if discharge temperature thermistor (TH4) exceeds 125: or 110: continuously for 5 minutes. Abnormal if condenser/evaporator temperature thermistor (TH5) exceeds 40: during defrosting and discharge temperature thermistor (TH4) exceeds 110:.

(2) Abnormal if discharge super heat (Cooling: TH4 – TH5/Heating: TH4 – TH6) increases. All the conditions in A or B are detected simultaneously for 10 minutes continuously after 6 minutes past from compressor start-up (including the thermostat indication or recovery from defrosting). <Condition A>

• Heating mode

• When discharge super heat is less than 70 deg.

• When the TH6 temp is more than the value obtained by TH7 – 5 deg.

• When the condensing temp of TH5 is less than 35:.

Case

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 fully 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 Over-heated 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

Judgment and action

1~6 Check indoor unit and repair defect.

7 Check if stop valve is fully open.

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

3 Check the inspected temperature of outside

temperature thermistor on LED display.

(SW2 on A-Control Service Tool : Refer to

11-10.)

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 11-6. 8 Replace outdoor controller board.

1 Check intake super heat. Check leakage of refrigerant. Charge additional refrigerant.

2 Check if stop valve is full open. 34 Turn the power off and check if U3 is dis-

played 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 11-6.

• During comp operation (Cooling and Heating)

• When discharge super heat is less than 80 deg in Cooling.

• When discharge super heat is less than 90 deg in Heating.

• When condensing temp of TH6 is more than –40:. (In Cooling only.)

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