Mitsubishi Electric PUZ-HA30NHA5, PUZ-HA36NHA5 Service Manual

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SERVICE MANUAL

CONTENTS

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

2. SAFETY PRECAUTION ·································· 2

3. FEATURES ······················································ 6

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

5. DATA ································································ 8

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

7. WIRING DIAGRAM ·········································11

8. WIRING SPECIFICATIONS ··························· 12

REFRIGERANT SYSTEM DIAGRAM

·············· 16

10. TROUBLESHOOTING ··································· 17

11. EASY MAINTENANCE FUNCTION··············· 73

12. FUNCTION SETTING ···································· 75

13.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

············ 84

14. DISASSEMBLY PROCEDURE ······················ 94

R410A

Notes:

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

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

[Model Name]

PUZ-HA30NHA5

PUZ-HA36NHA5

[Service Ref.]

PUZ-HA30NHA5 PUZ-HA36NHA5

PARTS CATALOG (OCB607)

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

No. OCH607

October 2015

2 SAFETY PRECAUTION

REFERENCE MANUAL

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 beaker.

• 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.

2-1. ALWAYS OBSERVE FOR SAFETY

INDOOR UNIT

Model name Service Ref. Service manual No.

PLA-A18/30/36BA6 PLA-A18/30/36BA6 OCH581/OCB581

PKA-A18HA6 PKA-A18HA6 OCH580/OCB580

PKA-A30/36KA6 PKA-A30/36KA6.TH OCH584/OCB584

PEA-A18AA6 PEA-A18AA6.TH HWE08070

PEAD-A30/36AA5 PEAD-A30/36AA5 HWE14030

PCA-A30/36KA6 PCA-A30/36KA6 OCH585/OCB585

PVA-A30/36AA4 PVA-A30/36AA4 HWE14060

OCH607

Cautions for units utilizing refrigerant R410A

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

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 indoors, and 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 alkylbenzene oil in a small amount.

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

· 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.

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.

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.

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.

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

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.

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

OCH607

Gravimeter

Unit

[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

specifications

· 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

[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 a syphon type.

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

OCH607

2-3. 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 7/256 in [0.7 mm] or below.)

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 refrigerants. Therefore, to enhance air tightness and strength, 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 strength as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch pipes, the dimension B changes. Use torque wrench corresponding to each dimension.

3Tools 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

1/32 [0.8]

5/128 [1.0]

—

1/32 [0.8]

1/32 [0.8] 5/128 [1.0] 5/128 [1.0]

Nominal

dimensions

(in)

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

: in [mm]

R410A R22

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

6.35

9.52

12.70

15.88

19.05

11/32-23/64 [ 9.1] 1/2-33/64 [13.2] 41/64-21/32 [16.6] 49/64-25/32 [19.7] —

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions (in)

Flare cutting dimensions

Outside

diameter (mm)

Dimension A

( )

-0.4

R410A R22

(mm)(in [mm])

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

6.35

9.52

12.70

15.88

19.05

43/64 [17.0] 7/8 [22.0] 1-3/64 [26.0] 1-9/64 [29.0]

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions (in)

Flare nut dimensions

Outside

diameter (mm)

Dimension B (in [mm])

R410A

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

Recover refrigerant 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 Recover refrigerant Check the degree of vacuum. (Vacuum valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Recover refrigerant

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 can be used for other refrigerants Tools can be used for other refrigerants Tools can be used for other refrigerants Tools can be used for other refrigerants Tools can be used for other refrigerants

Tool exclusive for R410A

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

(Usable if equipped with adopter 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

OCH607

3 FEATURES

HIGH HEATING CAPACITY

Industry-first flash injection circuit is equipped, which enables to keep the equal capacity to the rating even when outside temperature is 5°F [−15°C].

HIGH SPEED HEATING START UP

The performance of heating start up is improved. Compared to PUZ-A type, Hyper Heating Inverter reduced the time for heating start up by about half. After starting operation, the airflow temperature goes up to 105°F [41°C] quickly in 10 minutes. With industry first shorter and less frequent defrost, defrosting time is cut down by 15% compared to PUZ-A type and heating operation can continuously run for maximum 150 minutes.

WIDE HEATING RANGE

The heating range is expanded to −13°F [−25°C] compared to PUZ-A type which is up to 10°F [−12°C].

CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. Maximum 100 ft, 30m

The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level regardless of the length (maximum: 100 ft [30 m] and minimum: 16 ft [5 m]) of piping. The additional refrigerant charging work during installation often causes problems. It is completely eliminated by chargelss system. This unique system improves the quality and reliability of the work done. It also helps to speed up the installation time.

PUZ-HA30NHA5 PUZ-HA36NHA5

Outdoor W.B. temp.

Heating capacity

-13°F

[-25°C]

-4°F

[-20°C]

5°F

[-15°C]

14°F

[-10°C]

23°F

[-5°C]

32°F [0°C]

A36

HA36

40,000

(Btu/h)

30,000

23,500BTU/h

38,000BTU/h

Performance

about

60%UP

33,000Btu/h (Outlet air temp. 105°F[41°C])

About 5min.

Stable

About 50% CUT

Elapsed time(min.)

Heating capacity(peak)

About 10 min.

When stabled,

hot air of 122˚F[50˚C]

PUZ-A type: Outlet air temp. 105˚F[41˚C]

HA36

Outlet air temp.105˚F[41˚C]

40,000

(Btu/h)

30,000

5 100

w1 Condition Room temp. 70°F[21°C](D.B.) Outdoor temp. 35°F[1.7°C](D.B.) / 33°F[0.6°C](W.B.) : Hi notch

It does not become

122˚F[50˚C]

when outside air temp.

is too low.

Expanded

Up to -13

°F

Outdoor wet-bulb temperature

A36 type

HA36 type

-13°F

10°F

-13°F

[-25°C]

-4°F

[-20°C]

5°F

[-15°C]

14°F

[-10°C]

23°F

[-5°C]

32°F [0°C]

OCH607

4 SPECIFICATIONS

Service Ref.

Power supply Phase Single

Cycle 60 Hz

Voltage 208/230 V MCA A 28 MOCP A 40 Breaker size A 30 External finish Munsell 3Y 7.8/1.1 Heat exchanger Plate fin coil Defrost method Reverse cycle Crankcase heater

—

Compressor Hermetic

Model

Motor output kW 2.5

R.L.A. 20

L.R.A. 27.5

Starter type Inverter Fan Fan(drive) o No. Propeller fan o 2

Fan motor output

0.086 + 0.086

Fan motor

F.L.A.

0.40 + 0.40

Airflow m

/min 100

CFM 3530

Sound level Cooling dB 52

Heating dB 53 Protection devices

HP switch LP switch

Discharge thermo

Dimension W mm 950

D mm 330+30

H mm 1350

W in 37-12/32

D in 13 + 1-3/16

H in 53-5/32 Weight kg

Refrigerant

Charged kg 5.5

R410A

lb 12 Control Linear expansion valve Oil Model Ether (FV50S) Charged L 1.4

oz 45 Refrigerant Pipe size OD mm 9.52 piping Liquid in 3/8

Pipe size OD mm 15.88 Gas in 5/8 Connection method Indoor Flared Connection method Outdoor Flared Height difference m Maximum 30 IU - OU ft Maximum 100 Piping length m Maximum 75

ft Maximum 245

PUZ-HA30NHA5 PUZ-HA36NHA5

ANB33FJEMT

120 265

OCH607

Piping Length (one way

)

Charged

Factory

Service Ref. 100 ft 110 ft 120 ft 130 ft 140 ft 150 ft 160 ft 165 ft

30 m 33 m 37 m 40 m 43 m 46 m 49 m 50 m

PUZ-HA30NHA5 PUZ-HA36NHA5

194 oz 200 oz 206 oz 212 oz 218 oz 224 oz 230 oz 237 oz 195 oz

5.5 kg 5.7 kg 5.9 kg 6.0 kg 6.2 kg 6.4 kg 6.6 kg 6.7 kg

180 ft 200 ft 210 ft 230 ft 245 ft

55 m 61 m 64 m 70 m 75 m

242 oz 254 oz 260 oz 272 oz 280 oz

6.9 kg 7.2 kg 7.4 kg 7.7 kg 7.9 kg 5.5 kg

Additional charge is required for pipes longer than 100 ft

Service Ref.

Compressor model

(")

Winding Resistance

U-V

U-W

W-V

(at 68°F [20°C])

PUZ-HA30NHA5 PUZ-HA36NHA5

ANB33FJEMT

0.188

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

5-2. COMPRESSOR TECHNICAL DATA

DATA

5-3. NOISE CRITERION CURVES

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

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

BAND CENTER FREQUENCIES, Hz

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

PUZ-HA30NHA5 PUZ-HA36NHA5

COOLING

MODE

HEATING

SPL(dB)

LINE

5 ft

3.3 ft

MICROPHONE

UNIT

GROUND

OCH607

PUZ-HA30NHA5

Representative matching

PKA-A36KA6

Mode

COOLING HEATING

Total Capacity BTU/h

33,500

2,790

38,000

3,410

Input W

Electrical circuit

Indoor unit model

PKA-A36KA6

Phase

Single

Cycle

60 Hz

Voltage

230 V

Current

0.36A

Outdoor unit model

PUZ-HA36NHA5

Phase

Single

Cycle

60Hz

Voltage

230V

Current

Refrigerant circuit

Discharge pressure MPa

Suction pressure MPa

Discharge temperature °C

Condensing temperature °C

Suction temperature °C

Ref. Pipe length m

Discharge pressure PSIG

Suction pressure PSIG

Discharge temperature °F

Condensing temperature °F

Suction temperature °F

Ref. Pipe length ft

side

Indoor

Intake air temperature DB °C

Intake air temperature WB °C

Discharge air temperature DB °C

side

Outdoor

Intake air temperature DB °C

Intake air temperature WB °C

side

Indoor

Intake air temperature DB °F

Intake air temperature WB °F

Discharge air temperature DB °F

side

Outdoor

Intake air temperature DB °F

Intake air temperature WB °F

SHF

PKA-A30KA6

COOLING HEATING

12.2 A

2.58

0.87

70.8

44.4

10.5

7.6

374

126

159

112

26.7

19.4

12.5

23.9

0.71

0.09

15.4 A

2.94

0.73

75.6

49.7

2.8

7.6

427

106

168

121

21.1

15.6

43.5

8.3

6.1

110

—

30,000

2,500

32,000

2,930

PKA-A30KA6

0.57A

11.1 A

2.51

0.88

67.7

43.3

10.8

7.6

364

128

154

110

26.7

19.4

12.3

23.9

0.70

0.09

13.0 A

2.92

0.71

78.1

49.4

2.5

7.6

424

103

173

121

21.1

15.6

43.4

8.3

6.1

110

—

5-4. STANDARD OPERATION DATA

OCH607

OUTLINES AND DIMENSIONS

PUZ-HA30NHA5 Unit : mm<inch> PUZ-HA36NHA5

Min. 1000mm

<39-3/8>

Min. 150mm

<5-29/32>

Min. 10mm

<3/8>

Min. 10mm

<3/8>

FREE

FOUNDATION

Service space

Terminal Block

Left···Power supply wiring

Right····Indoor/Outdoor wiring

Earth terminal

Service panel

Handle

23<29/32>

1076<42-3/8>

* 1 447<17-19/32>

* 1 443<17-7/16>

Handle

Front piping cover

Rear piping cover

Air Discharge

Rear Air Intake

Side Air Intake

31<1-7/32>

145

<5-23/32>

145

<5-23/32>

220

<8-21/32>

30<1-3/16>

145

<5-23/32>

81<3-3/16>

219<8-5/8>

71<2-13/16>

Bottom piping hole

(Knockout)

Drain hole

5-[33<1-5/16>

Handle

Side Air Intake

Air intake

Rear Air Intake

Handle

40<1-9/16>

74<2-19/32>

When installing the conduit.

Set the attachment to the

inner side of each panel.

2-[22.2<7/8>

1/2 Conduit attachment

45<1-25/32>

40<1-9/16>

65<2-9/16>

92<3-5/8>

27<1-1/16>

55<2-3/16>

23<29/32>

73<2-7/8>

63<2-1/2>

Rear piping hole

(Knockout)

Rear trunking hole

(Knockout)

Conduit hole

(2-[27<1-1/16>Knockout)

[92

<3-5/8>

19<3/4>

55<2-3/16>

92<3-5/8>

<2-31/32>

40<1-9/16>

73<2-7/8>

63<2-1/2>

23<29/32>

27<1-1/16>

92<3-5/8>

Right piping hole

(Knockout)

Right trunking hole

(Knockout)

Conduit hole

(2-[27<1-1/16>Knockout)

[92

<3-5/8>

92<3-5/8>

65<2-9/16>

45<1-25/32>

40<1-9/16>

27<1-1/16>

55<2-3/16>

23<29/32>

73<2-7/8>

<2-1/2>

Front piping hole

(Knockout)

Front trunking hole

(Knockout)

Conduit hole

(2-[27<1-1/16>Knockout)

[92

<3-5/8>

371<14-19/32>

330<13>30<1-3/16>

175<6-7/8>

600<23-5/8>

175<6-7/8>

42<1-21/32>66<2-5/8>

950<37-13/32>

322<12-11/16>

1350<53-5/32>

635<25>

19<3/4>

417<16-13/32>

370<14-9/16>

2-U Shaped notched hole

(Foundation Bolt M10<W3/8>)

56<2-7/32>

28<1-3/32>

53<2-3/32>

45<1-25/32>

2-12 o 36 Oval hole

(Foundation Bolt M10<W3/8>)

1····Refrigerant GAS pipe connection (FLARE)[15.88<5/8>

2····Refrigerant LIQUID pipe connection (FLARE)[ 9.52<3/8>

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

Example of Notes

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

Piping Knockout Hole Details

The diagram below shows a

basic example.

Explanation of particular details are

given in the installation manuals, etc.

Dimensions of space needed

for service access are

shown in the below diagram.

Please secure the unit firmly

with 4 foundation (M10<W3/8>)

bolts. (Bolts and washers must

be purchased locally.)

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

Min.

10mm<3/8>

Min.

500mm

<19-11/16>

Min.

500mm

<19-11/16>

Min.

150mm

<5-29/32>

Min.

30mm

<1-3/16>

OCH607

WIRING DIAGRAM

PUZ-HA30NHA5 PUZ-HA36NHA5

TB1 MC MF1, MF2 21S4 63H

TH3 TH4 TH6 TH7 TH8

LEV-A, LEV-B, LEV-C DCL

Terminal Block<Power Supply, Indoor/Outdoor> Motor for Compressor Fan Motor Solenoid Valve (4-Way Valve) High Pressure Switch

63L Low Pressure Switch

Thermistor<Liquid>

TH32

Thermistor<Suction>

TH33

Thermistor<Ref. check>

Thermistor<Discharge> Thermistor<2-Phase Pipe> Thermistor<Ambient> Thermistor

<Heat Sink

Linear Expansion Valve

Reactor

P.B.

Power Circuit Board

ACTM

Active Filter Module

Main Smoothing Capacitor

CY1, CY2

Capacitor

Noise Filter Circuit Board

N.F.

Controller Circuit Board

C.B.

SYMBOL NAME SYMBOL NAME

Switch<Function Switch> Switch<Function Switch> Switch<Function Switch>

Switch

<Manual Defrost, Defect History Record Reset, Refrigerant Address> Switch<Test Operation> Switch<Function Switch, Model Select> Switch<Model Select>

SW7

SW1

SW4 SW5 SW6

SW8 SW9

Switch<Pump Down>

SWP

Connector<Emergency Operation>

CN31

F1, F2, F3, F4

CNM CNMNT CNVMNT CNDM

Connector<Connection for Option>

CN51

Fuse<T6.3AL250V

Connector<Connection for Option>

1 2 3 4 5 6 7 8

MODEL

SW6

1 MODEL SELECT

2 SW5 -1 to 5 : Function Switch

SW5-6 *2

OFF

30N

OFF

1 2 3 4 5 6

1 2 3 4 5 6 7 8

OFF

36N

OFF

1 2 3 4 5 6

The black square(■)indicates a switch position.

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M

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

CN5

(WH)

3 1

TB7

CND (WH)

CN2M

(WH)

M-NET ADAPTER

M-NET

A B S

When M-NET Adapter is connected

CNVMNT

(WH)

CNDM

(WH)

CN51

(WH)

CNMNT

(WH)

CNM (WH)

LEV-A

(WH)

LEV-A

C. B.

LEV-B

(RD)

LEV-B

TH7/6

(RD)

63H (YE)

TRANS

X55

X51

TH3

(WH)

CNDC

(PK)

CNF1 (WH)

CNF2 (WH)

TH4

(WH)

TH7 TH6 TH3 TH4

41 21

TH32 (BK)

TH32

1 2 1

SW7

SW6SW1

SW9

CN31

141

MF1

MF2

M M

CN2

(WH)

CNS

(WH)

CNAC

(WH)

CN4

(WH)

SV2 (BU)

(WH)

21S4 (GN)

LED1

LED2

X52

*1*

SW5SW8SW4 SWP

IPM

UVW

21S4

3 1

LEV-C

(BU)

TH33

(YE)

TH33

13 13 13

CN52C

(RD)

221

TABN

TABP

CN3

(WH)

CNAF

(WH)

CN2

(WH)

CN4

(WH)

CN5 (RD)

TH8

1 2

1 2 1 2

TABP2

P. B.

CNDC

(PK)

TABU

TABV

TABW

DS2

DS3

TABT

TABS

TABP1

TABN1

TABN2

CY1

CY2

LI NI

LO NO

POWER SUPPLY 208/230VAC 60Hz

TO INDOOR UNIT

TB1

L1 L2 GR S1 S2 S3

N. F.

CN5 (RD)

CNAC1

(WH)

CNAC2

(RD)

CN52C

(BK)

DCL

ACTM

YEGNOG

63H

63L

(RD)

63L

LEV-C

Use copper supply wires.

Utilisez des fils d'alimentation en cuivre.

OCH607

WIRING SPECIFICATIONS

8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT

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

1:1 System Simultaneous twin system

A Outdoor unit power supply B Earth leakage breaker C Wiring circuit breaker or isolating switch D Outdoor unit E Indoor unit/outdoor unit connecting cords F Remote controller G Indoor unit H Indoor unit earth

1 2

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.

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

Indoor unit model

PLA-A18, 30

PCA-A30, PKA-A18, 30, 36

PLA-A36 PCA-A36

1A 2A

15A 15A

– –

GG G

HH H

Indoor unit power supply Minimum circuit ampacity Maximum rating of overcurrent protective device

*1. Maximum 147 ft [45 m] If AWG13 is used, maximum 164 ft [50 m]. If AWG13 is used and S3 is separated, maximum 262 ft [80 m]. *2. The 30 ft [10 m] wire is attached in the remote controller accessory. Maximum 1500 ft *3. The figures are NOT always against the ground. S3 terminal has 24 V DC against S2 terminal. However between S3 and S1, these terminals are NOT electrically insulated by the transformer or other device. *4. Use earth leakage breaker (NV)

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

2. Use copper supply wires.

3. Use wires rated 600V or more for the power supply cables and the indoor/outdoor unit connecting cables.

4. Install an earth longer than other cables.

Notes:

Outdoor unit model Outdoor unit power supply Breaker size Minimum circuit ampacity Maximum rating of overcurrent protective device

Outdoor unit power supply Outdoor unit power supply earth Indoor unit-Outdoor unit *1 Indoor unit earth Remote controller-Indoor unit *2 Outdoor unit L1-L2 *3 Indoor unit-Outdoor unit S1-S2 *3 Indoor unit-Outdoor unit S2-S3 *3 Remote controller-Indoor unit *3

HA30

Single, 208/230 V, 60 Hz

30A 28A

40A 2 o Min. AWG 10 1 o Min. AWG 10

3 o AWG 16 (polar)

1 o Min. AWG 16

2 o AWG 22 (Non-polar)

208/230 V AC

24 V DC

Wiring

Wire No. o

size

Circuit

rating

A-Control

Outdoor Unit

3 poles isolator

208/230 V

Single phase

Isolator

A-Control

Indoor Unit

• Turn on the main power when the ambient temperature is −4°F [−20°C] or higher.

• In below −4°F [−20°C] condition, it needs at least 4 hr standby to operate in order to warm the electrical parts.

208/230 V AC

12 V DC

OCH607

8-2. 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

S1 S2

1 2

S1 S2 S3

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

The optional indoor power supply terminal kit is required.

Outdoor unit power supply

Wiring circuit breaker or isolating switch Outdoor unit Indoor unit/outdoor unit connecting cords Remote controller Indoor unit Indoor unit power supply

Simultaneous twin system

If the indoor and outdoor units have separate power supplies, refer to the table below. Change the indoor unit electrical box wiring referring to the figure in the right and the DIP switch settings of the outdoor unit control board.

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

Outdoor unit power supply

Wiring circuit breaker or isolating switch Outdoor unit Indoor unit/outdoor unit connecting cords Remote controller Indoor unit Indoor unit power supply

ON OFF 1 2

(SW8)

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)

Indoor unit specifications

Required

*1. Maximum 165 ft [50 m] *2. The 30 ft [10 m] wire is attached in the remote controller accessory . Maximum 1500 ft [500 m] *3. The figures are NOT always against the ground.

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

2. Use copper supply wires.

3. Use wires rated 300 V or more for the power supply cables.

4. Install an earth longer than other cables.

Indoor unit model

Indoor unit power supply Minimum circuit ampacity Maximum rating of overcurrent protective device

Indoor unit power supply Indoor unit power supply earth Indoor unit-Outdoor unit *1 Indoor unit earth Remote controller-Indoor unit *2 Indoor unit L1-L2 *3 Indoor unit-Outdoor unit S1-S2 *3 Indoor unit-Outdoor unit S2-S3 *3 Remote controller-Indoor unit *3

PLA-A18, 30

PCA-A30, PKA-A18

PLA-A36, PCA-A36

Single 208/230 V, 60 Hz ,Single 208/230 V 60 Hz

1 A 2A

15A 15A

o Min. AWG16 2 o Min. AWG16

o Min. AWG16 1 o Min. AWG16

o AWG22 (polar) 2 o AWG22 (polar)

o AWG22 (Non-polar) 2 o AWG22 (Non-polar)

208/230 V AC

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

Circuit

rating

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

Indoor unit power supplied from outdoor unit (Initial setting)

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

Connectors

Indoor unit

control board

Separate indoor unit/outdoor unit power supplies

Indoor unit

control board

Note: There are three types of labels (labels A, B, and C).

Affix the appropriate labels to the units according to the wiring method.

S1 S2

1 2

L1 L2

GR GR

L1 L2 GR

S1 S2 S3

1 2

S1 S2 S3

L2 GR

BLUE

YELLOW

CN01

YELLOW

BLUE

YELLOW

Wiring

Wire No.

size

– –

Earth leakage breaker

B C D E F G H

Option

Earth leakage breaker

B C D E F G H

G G

CN01

Indoor unit earth

208/230 V AC

L1 L2 GR

OCH607

8-3. INDOOR – OUTDOOR CONNECTING CABLE

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

Indoor unit-Outdoor unit

Outdoor power supply

Max. 147 ft [45 m] 3 o AWG15(polar)

Max. 164 ft [50 m]

3 o AWG13(polar)

Max. 262 ft [80 m]

3 o AWG13(polar) and S3 separated

Wire No. o Size

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

Indoor unit-Outdoor unit

Indoor/Outdoor separate power supply

Max. 393 ft [120 m]

2 o Min. AWG22

Wire No. o Size

Note: The optional indoor power supply terminal kit is necessary.

8-4. 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 208/230 V power supply. If it is connected, electronic parts on M-NET P.C. board may be burnt out. (3) Use 2-core x AWG16 [1.25 mm2] 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.

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

(4) Ground 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.

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

wire form one circuit and the electric potential difference occurs due to the impedance difference among grounding spots. In case of

single spot grounding, noise does not enter into the shield wire because the ground 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.

Centralized controller

Refrigerant address 00

M-NET address 01

A-control remote controller

Refrigerant address 00

M-NET address 02

Refrigerant address 00

M-NET address 03

Power

supply unit

Centralized

controller

M-NET transmission wire

O Bad example (Multi spot grounding of shield wire)

Good example 1 (Single spot grounding of shield wire)

Power

supply unit

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

Good example 2 (Single spot grounding of shield wire)

Centralized

controller

Centralized

controller

Power

supply unit

Power

supply unit

OCH607

8-4-3. 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.

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

Note: 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 “03” 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”.

8-4-1. 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 series, 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. (Initial setting: all addresses are set to “0”.)

8-4-2. 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 1-6 on the outdoor controller board. [Initial setting: all switches are OFF. (All refrigerant addresses are “00”.)]

1 2

–

M-NET Address No.

Switching

setting

SW11 ones digit

SW12 tens digit

OFF

Refrigerant address

OFF

A-control remote controller

Group A Group B Group C

A-control remote controller

TB5

A-control remote controller

Refrigerant address 00

M-NET address 01

Refrigerant address 00

M-NET address 02

Refrigerant address 01

M-NET address 03

Refrigerant address 00

M-NET address 04

Power

supply unit

Centralized

controller

Power

supply unit

A-control remote controller

TB5

Group A Group B

Refrigerant address 00

M-NET address 01

Refrigerant address 01

M-NET address 02

Refrigerant address 00

M-NET address 04

Refrigerant address 01

M-NET address 03

Refrigerant address 02

M-NET address 05

Centralized

controller

●

M-NET wiring

(1) Use 2-core x AWG16 [1.25 mm2] 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 transmission 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(M1), B(M2), S) on M-NET terminal block should be individually wired to the other 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.

Transmission

wire

Shield part

M-NET terminal block

Ground wire

A B S

OCH607

REFRIGERANT SYSTEM DIAGRAM

PUZ-HA30NHA5 PUZ-HA36NHA5 Unit: mm (in)

Distributor

Thermistor TH7 (Ambient)

Heat exchanger

Refrigerant GAS pipe connection [15.88(5/8)

Refrigerant LIQUID pipe connection [9.52 (3/8)

Stop valve (with service port)

Strainer (#100)

Power receiver

Linear expansion valve-B

Linear expansion valve-C

Linear expansion valve-A

Thermistor TH6 (2-phase pipe)

Thermistor TH3 (Liquid)

Charge plug (Low pressure)

Charge plug (High pressure)

Heat inter change circuit

Thermistor TH4 (Discharge)

Compressor

Injection port

Strainer (#50)

Solenoid valve (4-way valve)

Strainer (#100)

Muffler

Ball valve

Thermistor TH33 (Ref. check)

Thermistor TH32 (Suction)

Low pressure switch 63L

High pressure switch 63H

Refrigerant flow in cooling Refrigerant flow in heating

Thermistor TH8 (Heat sink)

Power circuit board

REFRIGERANT COLLECTING (PUMP DOWN)

When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedures 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 “CEN-

TRALLY 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 pump-

down 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.

OCH607

10 TROUBLESHOOTING

Present and past check codes are logged, and they can be 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 in the field, are summarized in the table below. Check the contents below before investigating details.

10-1. TROUBLESHOOTING

Unit conditions at service

Check 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 trouble shooting and ascertain the cause of the trouble according to “10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA”.

The trouble is not reoccurring.

Logged

Not logged

1 Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise, etc. Re-check the symptom, and check the installation environment, refrigerant amount, when the trouble occurred, matters related to wiring, etc. 2

Reset check code logs and restart the unit after finishing

service. 3 There is no abnormality concerning of parts such as

electrical component, controller board, remote controller,

etc.

1 Re-check the abnormal symptom. 2

Conduct troubleshooting and ascertain the cause of the trouble according to “10-5. TROUBLESHOOTING

INFERIOR PHENOMENA”. 3 Continue to operate unit for the time being if the cause is not ascertained. 4 There is no abnormality concerning of parts such as

electrical component, controller board, remote controller,

etc.

10-2. 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 (L1, L2) on the outdoor unit by 500 V Megger

and check that it is 1.0 M" or over.

Note: Do not use 500 V 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 “12. FUNCTION SETTING".

Make sure to read operation manual before test run. (Especially items to secure safety.)

OCH607

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 blows out. Heat mode: Check the heat blows out.

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.

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 2 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

10-2-1. Test run for wired remote controller

Check the operation of the outdoor unit fan.

OCH607

F1 F2 F3 F4

Error information

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

ResetPage

Error information

Contact information Dealer Tel

ResetPage

Reset error: Reset button

blinks

Check 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 has 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 has been registered.

F1 F2 F3 F4

Error information

Error reset

Error code Error unit IU Ref. address Unt# 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 the

button.

Navigating through the screens

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

button

OCH607

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.

4 records are shown per page, and the top record on the 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 con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.

OCH607

10-2-3. Start and finish of test run [For outdoor controller board]

• 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.

However, this is not a 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 com-

pressor starts operating. However, this is not a problem with product because the check valve itself generates the sound because pressure difference is small 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.)

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

RESET

SET

CLOCK

TEST

RUN

COOL

3,4

Test run [for IR wireless remote controller]

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

1 Turn on the main power to the unit. 2 Press the

TEST RUN

button twice continuously.

(Start this operation from the turned off status of remote controller

display.)

TEST RUN

and current operation mode are displayed.

3 Press the

MODE

( ) button to activate

COOL

mode, then

check whether cool air blows out from the unit.

4 Press the

MODE

( ) button to activate

HEAT

mode, then

check whether warm air blows out from the unit.

5 Press the

FAN

button and check whether strong air blows 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.

Notes:

• 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.

OFF

1 2

<SW4>

A B

C D

A Stop C Operation B Cooling D Heating

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

OCH607

F1 F2 F3 F4

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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

Ref. address

Error Grp.

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.

Check 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 con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

OCH607

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

F1 F2 F3 F4

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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 V DC) 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. The remote controller needs replac-

ing.

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 interfer

ence.

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

OCH607

• "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 intermit tent buzzer sound, the operation lamp blinks, and the check code is output. (It takes 3 seconds at most for check code to appear.)

• The check mode is cancelled.

[Procedure]

1. Press the CHECK button twice.

2. Press the TEMP 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>

10-3-4. Malfunction-diagnosis method by IR 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

VANE

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

OCH607

[Output pattern A] Errors detected by indoor unit

[Output pattern B]

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 seconds)” 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 s

Approx. 3 s

0.5 sOn0.5 sOn0.5 s

0.5 s

Off

Approx. 2.5 sOnApprox. 3 sOn0.5 sOn0.5 s

··· 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 sOn0.5 sOn0.5 s.On0.5 s

0.5 s

Off

Approx. 2.5 sOn0.5 sOn0.5 s

··· 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]

Notes:

*The check code in the parenthesis indicates PAR-30/31MAA model.

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

(Number of times)

IR wireless remote controller

Wired remote controller

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

Symptom Remark

Indoor/outdoor unit communication error

(Transmitting error) (Outdoor unit)

Open/short of outdoor unit thermistors

Compressor overcurrent interruption (When compressor locked)

Abnormal high discharging temperature/49C worked/ insufficient refrigerant

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

Abnormal temperature of heat sink

Outdoor unit fan protection stop

Compressor overcurrent interruption/Abnormal of power module

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

UP U3,U4 UF

U1,Ud (UD)*

U8 U6

U9,UH

Others

– –

Other errors

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

Compressor overcurrent interruption

Beeper sounds/OPERATION

INDICATOR lamp blinks 1 Check code

Symptom Remark

(Number of times)

IR wireless remote controller

Wired remote controller

1 P1

Intake sensor error

Pipe (TH5) sensor error

Pipe (TH2) sensor error

3 E6,E7

Indoor/outdoor unit communication error

4 P4

Drain sensor error/Float switch connector open

P5 PA

Drain pump error 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 14

Fb (FB)* PL

Indoor unit control system error (memory error, etc.) Refrigerant circuit abnormal

–

E0, E3

–

E1, E2

Remote controller control board error

Remote controller transmission error

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

OCH607

10-4. SELF-DIAGNOSIS ACTION TABLE

Check code

Abnormal point and detection method Case

Judgment and action

None

—

1 No voltage is supplied to termi-

nal 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 (L1 or L2

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

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)

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 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 Disconnection of connector TABT or TABS Refer to "10-9. TEST POINT DIAGRAM".

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 "10-9. TEST POINT DIAGRAM".

4 Check connection of reactor. (DCL)

Check connection of “L1” and “L2” on the

active filter module.(ACTM)

Refer to "10-9. TEST POINT DIAGRAM".

5 a) Check connection of outdoor noise filter

circuit board.

b) Replace outdoor noise filter circuit board.

Refer to "10-9. TEST POINT DIAGRAM".

6 Replace outdoor power circuit board.

7 Replace controller board (When items

above are checked but the units cannot be repaired).

(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 refriger-

ant 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. TEST POINT DIAGRAM".

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.

Note: Refer to indoor unit section for the

codes starting with P and E.

OCH607

Check 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 cannot be set within 4 minutes after power on because of miswiring (converse wiring or disconnection) of indoor/outdoor unit connecting wire.

(6846)

Startup time over

The unit cannot finish startup 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, 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 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: 262 ft [80 m] (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.

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 1 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)

(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. TEST POINT DIAGRAM".

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.

(4119)

2 connector open

Abnormal if both 63H and 63L connector circuits are open for 3 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. TEST POINT DIAGRAM". 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.

OCH607

Check code

Abnormal point and detection method Judgment and action

(1302)

High pressure (High-pressure switch 63H worked)

Abnormal if high-pressure switch 63H worked (*) during compressor operation. *602 PSIG [4.15 MPa]

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. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS". )

4–6 Turn the power off and check F5 is displayed when the power is on again. When F5 is displayed, refer to “Judgment

and action” for F5.

7 Check linear expansion valve. Refer to "10-6. HOW TO CHECK THE

PARTS".

8 Replace outdoor controller board.

Case

(1102)

High discharge temperature

(1) Abnormal if discharge temperature thermistor (TH4) exceeds 257˚F [125:] or 230˚F [110:] continuously for 5 minutes. Abnormal if condenser/evaporator temperature thermistor (TH5) exceeds 104˚F [40:] during defrosting and discharge temperature thermistor (TH4) exceeds 230˚F [110:].

(2) Abnormal if discharge superheat (Cooling: TH4−TH5/Heating: TH4−TH6) exceeds 126˚F [70:].

1 Overheated compressor opera-

tion 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.

Note: logging occurs in the parts

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

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

2 Check if stop valve is fully open.

34 Turn the power off and check if U3 is dis-

played when the power is on again.

When U3 is displayed, refer to “Judgment

and action” for U3.

5 Check linear expansion valve. Refer to "10-6. HOW TO CHECK THE

PARTS".

6 After recovering refrigerant, remove water

from entire refrigerant circuit under vacuum more than 1 hour.

(5104)

Open/short circuit of discharge temperature thermistor (TH4)

Abnormal if open (37˚F [3:] or less) or short (422˚F [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.)

1 Disconnection or contact failure

of connector (TH4) on the outdoor controller circuit board

2 Defective thermistor 3 Defective outdoor controller cir-

cuit board

1 Check connection of connector (TH4) on the

outdoor controller circuit board.

Check breaking of the lead wire for ther-

mistor (TH4). Refer to "10-9. TEST POINT DIAGRAM".

2 Check resistance value of thermistor

(TH4) or temperature by microcomputer. (Thermistor/TH4: Refer to "10-6. HOW TO CHECK THE PARTS".) (SW2 on A-Control Service Tool: Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".)

3 Replace outdoor controller board.

OCH607

Thermistors

Open detection Short detection

Symbol Name

TH3,TH32,TH33

TH6 TH7 TH8

−40°F [−40:] or below

−17°F [−27:] or below

194°F [90:] or above 194°F [90:] or above 194°F [90:] or above

216°F [102:] or above

Thermistor <Liquid>, <Suction>, <Ref. check>

Thermistor <2-phase pipe>

Thermistor <Ambient>

Thermistor <Heat sink>

Check code

Abnormal point and detection method Case Judgment and action

(4230)

Temperature of heat sink

Abnormal if heat sink thermistor (TH8) detects temperature indicated below. HA30, 36 ······························ 183˚F [84:]

1 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 out-

door power circuit board

7 Failure of outdoor fan drive cir-

cuit

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 114˚F [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 thermistor (TH8)

or temperature by microcomputer. (Thermistor/TH8: Refer to "10-6. HOW TO CHECK THE PARTS".) (SW2 on A-Control Service Tool: Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".)

6 Replace outdoor power circuit board. 7 Replace outdoor controller circuit board.

U4,

TH32, TH33

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

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 thermistors 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. FUNCTION OF SWITCHES,

CONNECTORS AND JUMPERS".)

1 Check connection of connector

(TH3,TH,32,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 thermistor (TH3,TH32,TH33,TH6,TH7,TH8). Refer to "10-9. TEST POINT DIAGRAM".

2 Check resistance value of thermistor

(TH3,TH32,TH33,TH6,TH7,TH8) or check temperature by microprocessor. (Thermistor/ TH3,TH6,TH7,TH8: Refer to "10-6. HOW TO CHECK THE PARTS".) (SW2 on A-Control Service Tool: Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".)

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. EMERGENCY OPERATION".

(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 com-

pressor. Refer to "10-9. TEST POINT DIAGRAM" (Outdoor power circuit board).

4 Check compressor referring to "10-6. HOW

TO CHECK THE PARTS".

5 Replace outdoor power circuit board.

1 Disconnection or contact failure

of connectors Outdoor controller circuit board: TH3, TH32, TH33,TH7/TH6 Outdoor power circuit board:

CN3

2 Defective thermistor 3 Defective outdoor controller cir-

cuit board

(

(1520)

Too low superheat due to low discharge temperature

Abnormal if discharge superheat is continuously detected less than or equal to 5˚F[−15˚C] for 3 minutes even though linear expansion valve has minimum open pulse after compressor starts operating for 10 minutes.

1 Disconnection or loose connec-

tion of discharge temperature thermistor (TH4)

2 Defective holder of discharge

temperature thermistor

3 Disconnection or loose connection

of linear expansion valve’s coil

4 Disconnection or loose connec-

tion of linear expansion valve’s connector

5 Defective linear expansion valve

12 Check the installation conditions of dis-

charge temperature thermistor (TH4).

3 Check the coil of linear expansion valve. Refer to "10-7. HOW TO CHECK THE

COMPONENTS".

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.

HOW TO CHECK THE PARTS".

OCH607

Check code

Abnormal point and detection method Case Judgment and action

(4400)

Outdoor fan motor

The outdoor fan motor is considered to be abnormal if the rotational frequency of fan motor is abnormal when detected during operation. Fan motor rotational frequency is abnor mal if;

• 100 rpm or below detected continuously for 15 seconds at 68˚F [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 con-

troller board during operation.

3 Replace the outdoor circuit controller board.

(when the failure is still indicated even after performing the remedy 1 above.)

(4220)

To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6. Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".

1 Check the field facility for the power supply. 2 Correct the wiring (U.V.W phase) to

compressor.

Refer to "10-9. TEST POINT

DIAGRAM" (Outdoor power circuit board).

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

Replace compressor.

1 Decrease in power source voltage, instantaneous stop. 2 Disconnection or loose

connection of CN52C on the outdoor power circuit board/ controller circuit board

3 Defective converter drive circuit

in outdoor power circuit board

4 Defective 52C drive circuit in

outdoor power circuit board

5 Disconnection or loose

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

6 Power circuit failure on DC

supply for 18 V DC output on outdoor controller circuit board

Input current sensor error/ L1-phase open error

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

1 Defective input current detection

circuit in outdoor power circuit board

2 Defective outdoor controller

circuit board

1 Replace outdoor power circuit board.

2 Replace outdoor controller circuit board.

Detailed

codes

Overvoltage error

• Increase in DC bus voltage to 400 V

1 Abnormal increase in power source voltage 2

Disconnection of compressor

wiring 3 Defective outdoor power circuit board 4 Compressor has a ground fault.

Undervoltage error

• Instantaneous decrease in DC bus voltage to 200 V

1 Check the field facility for the power supply. 2 Check CN52C wiring.

3 Replace outdoor power circuit board.

4 Replace outdoor power circuit board.

5 Check CN2 wiring.

6 Replace outdoor controller circuit board.

PFC/IGBT error (Undervoltage)

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

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.

OCH607

(5300)

Current sensor error

• Abnormal if current sensor detects −1.5A

to 1.5A during compressor operation. (This error is ignored in case of test run mode.)

1 Disconnection of compressor

wiring

2 Defective circuit of current sen-

sor on outdoor power circuit board

1 Correct the wiring (U·V·W phase) to compres-

sor. Refer to "10-9. TEST POINT DIAGRAM" (Outdoor power circuit board).

2 Replace outdoor power circuit board.

(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 volt-

age

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 compres-

sor.

Refer to "10-9. TEST POINT DIAGRAM"

(Outdoor power circuit board).

4 Check compressor. Refer to "10-6. HOW TO

CHECK THE PARTS".

5 Replace outdoor power circuit board.

(1504)

Overheat protection

Abnormal if outdoor pipe thermistor (TH3) detects 158˚F [70:] or more during compressor operation.

1 Defective outdoor fan (fan

motor) or short cycle of outdoor unit during cooling operation

2 Defective outdoor pipe ther-

mistor (TH3)

1 Check outdoor unit air passage.

23 Turn the power off and on again to check

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

Check code

Abnormal point and detection method

Case Judgment and action

(1300)

Abnormal low pressure (63L worked)

Abnormal if 63L is worked (under −4 PSIG [−0.03 MPa]) during compressor operation.

63L: Low pressure switch

1 Stop valve of outdoor unit is

closed during operation.

2 Disconnection or loose con-

nection of connector (63L) on outdoor controller board

3 Disconnection or loose connec-

tion of 63L

4 Defective outdoor controller

board

5 Leakage or shortage of refriger-

ant

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 process-

ing direction.

5 Correct to proper amount of refrigerant. 6 Check linear expansion valve. Refer to "10-6.

HOW TO CHECK THE PARTS".

(4210)

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 volt-

age

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 out-

door controller board

7 Defective compressor

1 Open stop valve.

2 Check facility of power supply.

3 Correct the wiring (U·V·W phase) to com-

pressor. Refer to "10-9. TEST POINT DIAGRAM" (Outdoor power circuit board).

4 Check indoor/outdoor fan. 5 Solve short cycle. 6 Replace outdoor controller circuit board. 7 Check compressor. Refer to "10-6. HOW TO

CHECK THE PARTS".

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.

OCH607

Check code

Abnormal point and detection method Judgment and actionCase

(6831

6834)

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

1 Abnormal if main or sub remote control-

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

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

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

1 Abnormal if indoor controller board can

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

2 Indoor controller board cannot receive

any signal from remote controller for 2 minutes. (Check 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: maximum 1640 ft [500 m]

(Do not use cable o 3 or more.)

• The number of connecting indoor units: maximum 16 units

• The number of connecting remote controller: maximum 2 units

If the cause of trouble is not any of 1–3 above, 4 Diagnose remote controllers.

a) When “RC OK” is displayed, remote con-

trollers 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 “RC E3” or “ERC 00-06” is dis-

played, noise may be causing abnormality.

Note: If the unit is not normal after replacing

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 receiv-

ing circuit of indoor controller board of refrigerant address “0”.

6 Noise has entered into the

transmission wire of remote controller.

Remote controller control board

1 Abnormal if data cannot be read nor-

mally from the nonvolatile memory of the remote controller control board.

(Check code: E1)

2 Abnormal if the clock function of remote

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

1 Defective remote controller 1 Replace remote controller.

(6832

6833)

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.

(Check 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. (Check code: E3)

1 Abnormal if indoor controller board could

not find blank of transmission path. (Check code: E5) 2 Indoor controller board receives trans-

mitted data at the same time, compares

the data, and when detecting it, judges

different data to be abnormal 30 continuous times. (Check 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 con-

trollers 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. c)

When “RC E3”or “ERC 00-66” is dis-

played, noise may be causing abnormality.

1 2 remote controllers 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 trans-

mission wire of remote controller.

OCH607

Check code

Abnormal point and detection method Judgment and action

(6841)

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

1 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 cir-

cuit of outdoor controller circuit board

Noise has entered power supply.

4 Noise has entered indoor/ out-

door 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 check code

This code is displayed when non-defined check code is received.

1 Noise has entered transmission

wire of remote controller.

2 Noise has entered indoor/ out-

door unit connecting wire.

3 Outdoor unit is not inverter

model.

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 model.

Case

(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/out-

door unit connecting wire

2 Defective communication cir-

cuit 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.

(6840)

Indoor/outdoor unit communication error (Signal receiving error)

1 Abnormal if indoor controller board could

not receive any signal normally for 6 minutes after turning the power on.

2 Abnormal if indoor controller board could

not receive any signal normally for 3 minutes.

3 Consider the unit as abnormal under

the following condition; When 2 or more indoor units are connected to an outdoor unit, indoor controller board could not receive a signal for 3 minutes from outdoor controller circuit board, a signal which allows outdoor controller circuit board to transmit signals.

Note: Check LED display on outdoor controller

circuit board. (Connect A-Control service tool (PAC-SG50ST))

Refer to EA–EC item if LED displays EA–AC.

1 Check disconnecting or looseness of indoor/

outdoor unit connecting wire of indoor unit or outdoor unit.

Check all the units in case of twin indoor unit

system.

2–4

Turn the power off, and on again to check.

If abnormality generates again, replace

indoor controller board or outdoor

controller circuit board. 5 Turn the power off, and detach fan motor

from connector (CNF1,2). Then turn the power on again.

If abnormality is not displayed, replace fan

motor.

If abnormality is displayed, replace outdoor

controller circuit board.

Check RS1 on outdoor noise filter board with tester. If open is detected, replace the board .

Note: Other indoor controller board may have

defect in case of twin indoor unit system.

1 Contact failure, short circuit or

miswiring (converse wiring) of indoor/outdoor unit connecting wire

2 Defective transmitting receiv-

ing circuit of outdoor controller circuit board.

3 Defective transmitting receiv-

ing circuit of indoor controller board.

4 Noise has entered into indoor/

outdoor unit connecting wire.

5 Defective fan motor 6 Defective rush current resistor

OCH607

1 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 exten-

sion 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 com-

pletely.

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) [ −5.4˚F [−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: 5.4˚F [3:] [ (Condenser/

Evaporator temperature(TH5)− room temperature(TH1))

1–4 Check pipe <liquid or condenser/ evaporator> temperature with room tem-

perature 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.

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

23 Check converse connection of extension pipe or converse wiring of indoor/outdoor unit connecting wire.

(

)

1 2 3 4 5 6

OFF

1 2 3 4 5 6

OFF

1 234 5 6

OFF

1 2 3 4 5 6

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

Check code

Abnormal point and detection method Judgment and actionCase

(0403)

Serial communication error

1. Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective.

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 cir-

cuit 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.

OCH607

Check 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 trans-

mission 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.

(6602)

Hardware 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.

1 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 collide each other.

2 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

1. Overtime error by collision damage Abnormal if transmitting signal is not

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

2. Data could not reach transmission wire for 8 to 10 minutes continuously because of noise, 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 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 proces-

sor 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 and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more, and turn the power on again. System returns to normal if abnormality was accidental malfunction. If the same abnormality generates again, abnormality-generated controller may be defective.

OCH607

Continued to the next page.

Check

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 is 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�� 656 ft [200 m]

• Remote controller line (39 ft [12 m])

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��

AWG16 [1.25 mm2]

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 gen-

erated controller

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

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 following when the error “A7” occurs.

1 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.

2 Check address switch of abnormality gener-

ated address.

3 Check disconnection or looseness of abnor-

mality generated or abnormality detected 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 the cause of trouble is in 1–5, repair the defective, then 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 there was no trouble with 1–5 above in

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

• If there was no trouble with 1–5 above in dif-

ferent 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 the cause of trouble is not any of 1-6 above, replace the controller board of displayed address or attribute. If the unit does not return to normal, multi-controller board of outdoor unit may be defective (repeater circuit). Replace multi-controller board one by one to check if the unit returns to normal.

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

1 During group operation with

indoor unit of multi- refrigerant system, if remote controller transmit 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

Disconnection of transmission connector (CN2M) of indoor unit

4 Defective transmitting receiving

circuit of indoor unit or remote controller

OCH607

5. If displayed address or attribute is FRESH MASTER, indoor unit detects abnormality when indoor unit transmitted 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 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

Check Code

Abnormal point and detection method Case Judgment and action

(6607)

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

1 If the power supply of

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

2 During sequential operation

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

3 Contact failure of transmis-

sion wire of indoor unit of LOSSNAY

4 Disconnection of transmission

connector (CN2M) of indoor unit

5 Defective transmitting receiv-

ing 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 transmitted 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 transmitted to remote controller and there was no reply (ACK).

1 During group operation with

indoor unit of multi- refrigerant system, if indoor unit transmit 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.

OCH607

10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA

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 not be 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

Communication error between the indoor and outdoor unit

4 Outdoor unit protection device connector is open.

1 12 V DC is not supplied to remote controller.

(Power supply display is not indicated on LCD.) 2 12–15 V DC is supplied to remote controller, how-

ever, 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 3 “PLEASE WAIT” is displayed for 6 min-

utes 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 nor mal. 4 Check LED display on outdoor controller circuit board. Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".). Check protection device connector (63L and 63H) for contact failure. Refer to "10-9. TEST POINT DIAGRAM".

Check 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 Extension of transmission wire

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

• Maximum distance�� 656 ft [200 m]

•

Remote controller line

(39 ft

[12 m])

3 Extension 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��AWG16 [1.25mm2]

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.

OCH607

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 expan-

sion 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 tempera-

ture 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 intake grill and check the filter.

Clean the filter by removing dirt or dust on it.

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 shield. 7

Check refrigerant system during operation.

8. 1For 3 minutes after temperature

adjuster turns off, the compressor will not start operating even if temperature adjuster is turned on. 2For 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 IR wireless remote controller no beep is heard and the unit does not start operating. Operation display is indicated on the IR wireless remote controller.

1 The pair number settings of the IR wireless remote

controller and indoor controller board are mismatched.

1 Check the pair number settings.

5. When operating by the IR 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 Hand-held remote controller operation is prohibited.

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

• Hand-held remote controller operation is prohibited

by centralised controller etc. since it is connected to MELANS.

3 Refer to factor of No.2 on previous page.

1 Normal operation

2 Normal operation

3 Check phenomena of No.2.

6. Remote controller display works normally and the unit performs cool-

ing 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 tempera-

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

2 Open intake grille and check the filter.

Clean the filter by removing dirt or dust on it.

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 shield.

OCH607

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 check codes

displayed on the

remote controller?

Are any check 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

OCH607

187 to 253 V AC?

12 to 16 V DC?

YES

Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit.

Check the voltage among L1 and L2 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 indoor/outdoor connecting wire

•

Check if there is miswiring

or breaking of wire.

Symptoms: Nothing is displayed on the remote controller. 1

Diagnosis flow Cause

Inspection method and troubleshooting

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

OCH607

187 to 253 V AC?

Are there looseness or

disconnection of the indoor/

outdoor connecting wire?

Is anything displayed?

17 to 28 V DC?

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.

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. 2

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?

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10 to 16 V DC?

YES

Lighting

Blinking

Lighting

Blinking

Check the voltage of the terminal block (TB6) of the indoor unit.

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 10

and 16 V DC, 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. 3

LED display of the indoor

controller board LED1 : LED2 : or LED3 : —

Check the status of the LED2.

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The operating display of remote

controller does not come on.

Phone Calls From Customers How to Respond Note

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

2 Unit cannot be restarted for a while after it’s stopped.

2 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 or thermostat.

Check 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.

3 Check code will be displayed if any protection devices of the air conditioner are actuated.

What is check code?

“PLEASE WAIT” is displayed on the screen.

1 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 displayed while that time.

“FILTER” is displayed on the screen.

2 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.

3 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.)

4 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 blower 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

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Phone Calls From Customers How to Respond Note

1 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.

2 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.

3 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.

An gas escaping sound is heard

sometimes.

1 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.

2 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.

3 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.

4 This is not a malfunction. This is the sound which is heard when the blower 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.

5 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.

2 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.)

1 This is not a malfunction. During the DRY operation, the blower’s ON/OFF is controlled by the microcomputer 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.

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Air blows out for a while after HEAT operation is stopped.

Phone Calls From Customers How to Respond Note

3 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.

1 If the up/down vane is set to downward in COOL operation, it will be automatically set to horizontal blow by the microcomputer 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.)

2 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)

3 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….

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

2 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.

1 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.

3 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 “auto recovery feature from power ”.

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.

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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.

COOL: When pipes or piping joints are cooled, they get sweated and water drips down. HEAT: Water drips down from the heat exchanger. Note: Use optional parts “Drain Socket” and “Drain

pan” if these water needs to be collected 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 the IR wireless remote controller gets dim or does not come on. The indoor unit does not receive a signal from remote controller at a long distance.

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1 2 3 4 5 6

Gray

Orange

Red

Yellow

Black

Parts name

Check points

Disconnect the connector then measure the resistance with a tester. (Ambient temperature 50 to 86°F [10 to 30:])

Thermistor (TH3) <Liquid>

Thermistor (TH4) <Discharge>

Thermistor (TH6) <2-phase pipe>

Thermistor (TH7) <Ambient>

Thermistor (TH8) <Heat sink>

Thermistor (TH32) <Suction>

Thermistor (TH33) <Ref. check>

Normal

160 to 410 k"

4.3 to 9.6 k"

39 to 105 k"

TH4

TH3

TH6

TH7

TH32

TH33

TH8

Abnormal

Open or short

Measure the resistance between the terminals with a tester. (Ambient temperature 68°F [20

])

Solenoid valve coil <4-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 68°F [20

])

Refer to the next page.

Fan motor(MF1,MF2)

1435 i 150 "

0.188 "

Measure the resistance between the terminals with a tester. (Winding temperature 68°F [20

])

Normal Abnormal

Open or short

Normal

Gray - Black Gray - Red

Gray - Yellow

Gray - Orange

Abnormal

46 i 3 "

Open or short

10-6. HOW TO CHECK THE PARTS PUZ-HA30NHA5 PUZ-HA36NHA5

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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 rotate.

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

Fail

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 250–330 V DC

TEST POINT 2 : VCC (between 5 (+) and 4 (−) of the fan connector): VCC 15 V DC

Wiring recovery

Replace the outdoor controller board.

Replace the fan motor.

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

Replace the 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

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10-7. HOW TO CHECK THE COMPONENTS

Low temperature thermistors

• Thermistor <Liquid> (TH3)

• Thermistor <2-phase pipe> (TH6)

• Thermistor <Ambient> (TH7)

• Thermistor <Suction> (TH32)

• Thermistor <Ref. check> (TH33)

32˚F [0:] 15 k" 50˚F [10:] 9.6 k" 68˚F [20:] 6.3 k" 77˚F [25:] 5.2 k"

86˚F [30:] 4.3 k" 104˚F [40:] 3.0 k"

68˚F [20:] 250 k" 86˚F [30:] 160 k" 104˚F [40:] 104 k" 122˚F [50:] 70 k" 140˚F [60:] 48 k"

158˚F [70:] 34 k" 176˚F [80:] 24 k" 194˚F [90:] 17.5 k" 212˚F [100:] 13.0 k" 230˚F [110:] 9.8 k"

High temperature thermistor

• Thermistor <Discharge> (TH4)

−20 −10 0 10 20 30 40 50

−4 −14 32 50 68 86 104122:°F

Temperature

Resistance (k")

500

400

300

200

100

50 75 100 120

122 167 212 248

°F

Temperature

Resistance (k")

32˚F [0:] 180 k" 77˚F [25:] 50 k" 122˚F [50:] 17 k" 158˚F [70:] 8 k" 194˚F [90:] 4 k"

Medium temperature thermistor

• Thermistor <Heat sink> (TH8)

200

150

100

25 50 75 100 110 125

77 122 167 212 230 257:°F

Temperature

Resistance (k")

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

t (:): Rt =15exp{3480(

273+t – 273

)}

T (˚F): RT =15exp{3480(

273+(T– 32)/1.8 – 273

)}

1 1

Thermistor R50 = 17 k" ± 2% B constant = 4170 ± 3%

t (:): Rt =17exp{4170(

273+t – 323

)}

T (˚F): R

T=17exp{4170(

273+(T– 32)/1.8 – 323

)}

1 1

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

t (:): Rt =7.465exp{4057(

273+t – 393

)}

T (˚F): R

T =7.465exp{4057(

273+(T– 32)/1.8 – 393

)}

1 1

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(2) Linear expansion valve operation

Open

Extra tightning (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 phases become OFF.

• When the power 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 i n

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

LEV-B

LEV-C

12 V DC

Outdoor controller board

Drive circuit

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.

OFF

Output

(Phase)

Output

2 3 4

5 6 7 8

OFF

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Main body

Lead wire

Stopper

Coil

(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.

Be sure to attach the stopper.

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.

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 stress.

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(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

10-8. EMERGENCY OPERATION

(1) When any check codes shown below is displayed on outdoor unit, or microcomputer for wired remote controller or indoor

unit has a failure while no other problems are found, emergency operation will be available by setting the emergency operation switch (SWE) 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 check codes 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.

SW4

1 2 Cooling

Heating

OFF

CN31

Shorting pins

Inspected content

Open/short of thermistor (TH3/TH6/TH7/TH32/TH33/TH8)

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

Communication error between outdoor controller board and M-NET board (Serial communication error)

Check code

E0–E7

●

When following abnormalities occur, emergency operation will be available.

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(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:

Intake temperature (TH1)

Indoor liquid temperature (TH2)

Indoor 2-phase pipe temperature (TH5)

Set temperature

Outdoor liquid temperature (TH3)

Outdoor 2-phase pipe temperature (TH6)

Outdoor ambient temperature (TH7)

Temperature difference code (intake temperature−set temperature) (Tj)

Discharge superheat (SHd)

Sub-cool (SC)

Operation mode

COOL

81°F [27:]

41°F [5:]

77°F [25:]

113°F [45:]

122°F [50:]

95°F [35:]

54°F [30:]

9°F [5:]

HEAT

69°F [20.5:]

113°F [45:]

122°F [50:]

72°F [22:]

41°F [5:]

45°F [7:]

54°F [30:]

9°F [5:]

(*1)

(*2)

Remarks

*1: If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data. If the unit enters emergency operation because TH values have become mismatched, setting the thermistors to open/short corrects the settings.

*2: If one thermistor is set to open/short, the values for each will be different. [Example] When pipe temperature thermistor (TH3) has an open or short circuit.

COOL

113°F [45:]

41°F [5:]

HEAT

41°F [5:]

122°F [50:]

Thermistor

TH3

TH6

TH4

TH5

TH2

Regard normal figure as effective data.

Discharge superheat (SHd) Cooling = TH4−TH6 = Tc−Ta Heating = TH4− TH5 = Td−(122°F [50:])

Degree of subcooling (SC) Cooling = TH6−TH3 = Ta−(113°F[45:]) Heating = TH5−TH2 = 122°F−113°F = 9°F [50:−45: = 5:]

Operation data

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Communication power supply D71 Voltage 24 V DC

CNS

S1-S2: 208/230 V AC

CNAC

2 to 4: Power supply for outdoor controller circuit board (208/230 V AC) 1 to 3: Power supply for indoor and outdoor unit connection wire (208/230 V AC)

CNF1, CNF2 Connect to the fan motor

1–4: 280 V DC 5–4: 15 V DC 6–4: 0−6.5 V DC 7–4: 15 V DC(When stopped)

7.5 V DC(When operated) (0–15 V pulse)

21S4

4-way valve

63H

High pressure switch

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

280 V DC (1+, 3−) Connect to the outdoor power circuit board (CNDC)

+ -

VFG (TEST POINT 4)

(Voltage between right pins of PC5C and PC5D, pin 3 and pin 4) (Same as

(CNF1

7(+)–4(−))

VSP (TEST POINT 3)

(Voltage between pins of C5A, C5B): 0 V DC(when stopped), 1–6.5 V DC (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 (0–5 V DC) 3–4:

18 V DC

6–5: 16 V DC 7–5: 16 V DC

CN52C

(Connect to the noise filter circuit board (CN52C))

10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUZ-HA30NHA5 PUZ-HA36NHA5

<CAUTION> TEST POINT1 is high voltage.

TH32, TH33

Thermistor <Suction>, <Ref. check>

63L Low pressure switch

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CNAC1, CNAC2 208/230 V AC (Connect to the outdoor controller circuit board (CNAC))

EI Connect to the ground

CN5 Primary current (Connect to the outdoor power circuit board (CN5))

LO, NO Voltage of 208/230 V AC is output (Connect to the outdoor power circuit board (TABS, TABT))

Outdoor noise filter circuit board PUZ-HA30NHA5 PUZ-HA36NHA5

CN52C 52C driving signal (Connect to the outdoor controller circuit board (CN52C))

E2 Connect to the ground

LI, NI Voltage of 208/230 V AC is input (Connect to the terminal block(TB1))

RS1

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Outdoor power circuit board PUZ-HA30NHA5 PUZ-HA36NHA5

TABP1 Connect to 52C

TABP2/SC-P2 Connect to the ACTM

CN4 Connect to the outdoor controller circuit board (CN4)

CN2 Connect to the outdoor controller circuit board (CN2) 1–5: Transmitting signal to the 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

CN3 Thermistor (TH8) <Heat sink>

CN5 Detection of primary current Connect to the outdoor noise filter circuit board (CN5)

CNDC 280–380 V DC (1+, 3−) Connect to the outdoor controller circuit board (CNDC)

TABS/TABT Connect to the outdoor noise filter circuit board Voltage among phases: 208/230 V AC

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 bridge TABP1-TABS, TABN1-TABS, TABP1-TABT,TABN1-TABT

2. Check of DIP-IPM P-U, P-V, P-W, N-U, N-V, N-W

TABN2 Connect to ACTM

TABN Connect to the smoothing capacitor CB –

TABU/V/W Connect to the compressor (MC) Voltage among phases:10–180 V AC

TABP Connect to the smoothing capacitor CB +

TABN1 Connect to ACTM

DIP-IPM

CNAF Connect to ACTM

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Active filter module PUZ-HA30NHA5 PUZ-HA36NHA5

L1, L2 Connect to the DCL(Reactor)

Connect to the outdoor power circuit board (TABP1)

Connect to the outdoor power circuit board(TABN1)

–

Io Connect to the outdoor power circuit board (TABN2)

Non-connect

N1 Non-connect

P Connect to the outdoor power circuit board (TABP2)

Connect to the outdoor power circuit board(CNAF)

1 : GND 2–1 : 18 V DC

3–1 : Control signal 4, 5 : Not used 6–1 : Control signal

Upper side

Lower side

DCL

L1 L2

ACTM

N1 N2

(+)

(- )

Load

Connection and internal circuit diagram

Error condition Normal value (reference)

Symptom when the unit is in trouble

(–) and Io open less than 1"

The unit does not operate (cannot be switched ON)

(–) and L2

short 100 k" to 1 M"

The breaker operates

open *1

The unit does not operate (cannot be switched ON) 2U9 Abnormal stop (*2)

P and L2

short 100 k" to 1 M"

The breaker operates

open *1

The unit does not operate (cannot be switched ON) 2U9 Abnormal stop (*2)

P and Io

short 100 k" to 1 M"

The breaker operates

open *1

The unit does not operate (cannot be switched ON) 2U9 Abnormal stop (*2)

L2 and Io

short 100 k" to 1 M"

The breaker operates

open *1

The unit does not operate (cannot be switched ON) 2U9 Abnormal stop (*2)

Tester check points of Active lter module

. The symptom when the unit is in open error condition is described to determine open error by tester check.

. SW2 setting : Code "20" display

1 6

ON OFF

OCH607

*1 Manual defrost should be done as follows.

1 Change the DIP SW1-1 on the outdoor controller board from OFF to ON. 2 Manual 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 manual defrost is finished.

• Pipe temperature is less than or equal to 46ºF [8ºC].

Manual defrost will finish if certain conditions are satisfied. Manual 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.

Switch

Type

switch

DIP

switch

Push

switch

SW1

No.

Function Effective timing

Action by the switch operation

Manual 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

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

1 2 3

0 1 2 3

4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6

1 2 3

4 5 6 7

4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6

1 2 3

8 9 10 11

4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6

1 2 3

12 13 14 15

4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6ON1 2 3 4 5 6

10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches

Continue to the next page

OCH607

1 2 3 4 5 6 7 8

OFF

36N

OFF

1 2 3 4 5 6

1 2 3 4 5 6 7 8

MODEL SW6 SW5-6

OFF

30N

OFF

1 2 3 4 5 6

3,4,5

3,4

ON OFF

No.

Function Effective timing

Action by the switch operation

No function

Power failure

automatic recovery *

No function

Model select

Max. Hz setting (cooling)

Max. Hz setting (heating)

No function

Defrost setting

No function

Function switch

No function

Switch

SW5

SW7

DIP

switch

SW9

SW6

SW5

Type of

Switch

—

Auto recovery

—

Max. Hz (cooling)

0.8

Max. Hz (heating)

0.8

—

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

Power consumption (Demand switch ON)

Model select

Following SW5-6 reference

CN31

Types

Connector

Function Effective timing

Connector

Start

Short Open

Action by open/ short operation

Emergency operation

When power supply ON

Normal

(2) Function of connector

*2 “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. *3 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)) *4 Please do not use SW7-3 to 7-6 usually. Trouble might be caused by the usage condition.

OCH607

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.

Note: The performance depends on the load of conditioned outdoor temperature.

How to wire

1) Make the circuit as shown above with adapter for external signal input (PAC-SC36NA).

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 (PAC-SC36NA), 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. 33 ft [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)

Outdoor unit controller board

3 2 1

Insulate this point securely as this is not used.

<Low-level sound priority mode circuit>

SW7-1 SW7-2

OFF

0% (Operation stop)

75%

50%

OFF

Power consumption

(SW1 on)

OCH607

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

—

A0–A8

[Display] (1)Normal condition

(2)Abnormal condition

Unit condition

Outdoor controller board A-Control Service Tool

LED1 (Green) LED2 (Red) Check 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

Check

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

Check 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

*1 Check code displayed on remote controller *2

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.

3 Check if noise entered into indoor/outdoor connecting wire or power supply.

4 Re-check error by turning off power, and on again.

1 Check if connector (63L or 63H) on the outdoor controller

board is

not disconnected.

Check continuity of pressure switch (63H) 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.

1 Check if remote controller is MA remote controller (PAR-21MAA). 2 Check if noise entered into transmission wire of remote controller. 3 Check if noise entered into indoor/outdoor connecting wire. 4

Re-check error by turning off power, and on again.

Check if connecting wire of indoor unit or remote controller

is connected correctly. 2 Check if noise entered into transmission wire of remote controller.

3 Re-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.26 P.27 P.27 P.27

(EA)

P.27 (Eb) P.27

(EC)

P.33 (E8)

P.33 (E9)

P.32

P.33

P.34

P.35–

P.38

Detailed

reference

page

Continue to the next page

OCH607

Ud UF

U6 U3 U4

P1 P2 P9

Indication Error

Check

code

Outdoor controller board

Contents Inspection method

LED1 (Green)

LED2 (Red)

3 blinking 1 blinking

2 blinking

3 blinking

*1 Check code displayed on remote controller *2 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 shell thermostat and discharging temperature (TH4)

Abnormality of superheat due to low discharge temperature

1 Check if stop valves are open. 2 Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller

board are not disconnected.

3 Check if unit is filled with specified amount of refrigerant. 4 Measure resistance values among terminals on indoor valve and

outdoor linear expansion valve using a tester.

Abnormal high pressure (High pressure switch 63H worked.) Abnormal low pressure (Low pressure switch 63L worked.) Abnormality of outdoor fan motor rotational speed

1 Check if indoor/outdoor units have a short cycle on their air ducts. 2 Check if connector

(63H)(63L) on outdoor controller board is not disconnected.

3 Check if heat exchanger and filter is not dirty. 4 Measure resistance values among terminals on linear expansion valve

using a tester.

1 Check if stop valves are open. 2 Check looseness, disconnection, and converse connection of

compressor wiring. 3

Measure resistance values among terminals on compressor using a tester.

4 Check 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 discharge thermistor (TH4)

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

1 Check if connectors

(TH3,TH32,TH33,TH4, and TH7/6)

on outdoor

controller board and connector

(CN3)

on outdoor power board are not

disconnected. 2 Measure resistance value of outdoor thermistors.

Abnormality of heatsink temperature

1 Check if indoor/outdoor units have a short cycle on their air ducts. 2 Measure resistance value of outdoor thermistor(TH8).

1 Check the outdoor fan motor. 2 Check if connector

(TH3)

on outdoor controller board is disconnected.

Abnormality of voltage 1 Check looseness, disconnection, and converse connection of

compressor wiring. 2

Measure resistance value among terminals on compressor using a tester

3 Check if power supply voltage decreases. 4 Check the wiring of CN52C. 5 Check the wiring of CNAF.

Abnormality of room temperature thermistor (TH1) Abnormality of pipe temperature thermistor /Liquid (TH2) Abnormality of pipe temperature thermistor/Condenser-Evaporator

1 Check if connectors (CN20, CN21, CN29 and CN44) on indoor controller board are not disconnected. 2 Measure resistance value of indoor thermistors.

Abnormality of drain sensor (DS) Float switch connector open (FS)

Indoor drain overflow protection

1 Check if connector (CN31)(CN4F) on indoor controller board is not

disconnected.

2 Measure resistance value of indoor thermistors. 3 Measure resistance value among terminals on drain-up machine using

a tester.

4 Check if drain-up machine works. 5 Check drain function.

Freezing (cooling)/overheating (heating) protection

1 Check if indoor unit has a short cycle on its air duct. 2 Check if heat exchanger and filter is not dirty. 3 Measure resistance value on indoor and outdoor fan motors. 4 Check if the inside of refrigerant piping is not clogged.

Abnormality of pipe temperature

1 Check if indoor thermistors (TH2 and TH5) are not disconnected from holder. 2 Check if stop valve is open. 3

Check converse connection of extension pipe. (on plural units connection)

4 Check if indoor/outdoor connecting wire is connected correctly. (on plural units connection)

P.28

P.29

P.28

P.31

P.30

P.31

P.31 P.31 P.29 P.28 P.29

P.29

P.30

*2 *2 *2

Detailed

reference

page

Protection from overheat operation(TH3)

P.31

OCH607

<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 check code by controlling DIP SW2 on “A-Control Service Tool”.

SW2 setting

1ON2 3 4 5 6

Display detail

Explanation for display Unit

Operation indicator SW2 : Indicator change of self diagnosis

(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) 1Operation mode display

1ON2 3 4 5 6

(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

2Display 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.

(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

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

UP P1–P8 A0–A7

Abnormal high pressure (63H worked) Abnormal high discharging temperature, shortage of refrigerant Open/short circuit of discharging thermistor (TH4) 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 worked) Compressor overcurrent interruption Abnormality of indoor units Communication error of M-NET system

OCH607

SW2 setting

1ON2 3 4 5 6

Display detail

Explanation for display Unit

Pipe temperature/Liquid (TH3)

−40–194

−40–194 (−40–90:) (When the coil thermistor detects 0˚F or below, “–” and temperature are displayed by turns.) (Example) When −10˚F;

0.5 s 0.5 s 2 s

˚F

1ON2 3 4 5 6

Discharge temperature (TH4) 37–327

Output step of outdoor FAN 0–10

The number of ON/OFF times of compressor 0–9999

Compressor integrating operation times 0–9999

37–327 (3–164:) (When the discharge thermistor detects 100˚F or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 105˚F;

0.5 s 0.5 s 2 s

˚F

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 s 0.5 s 2 s

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 s 0.5 s 2 s

1ON2 3 4 5 6

Compressor operating current 0–50

LEV-A opening pulse 0–480

0–50 Note: Omit the figures after the decimal fractions.

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 s 0.5 s 2 s

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.

1ON2 3 4 5 6

(SW2)

1ON2 3 4 5 6

Compressor operating frequency 0–255

0–255 (When it is 100 Hz or more, hundreds digit, tens digit and ones digit are displayed by turns. (Example) When 125 Hz;

0.5 s 0.5 s 2 s

1ON2 3 4 5 6

OCH607

SW2 setting

1ON2 3 4 5 6

Display detail

Explanation for display Unit

Pipe temperature/Liquid (TH3) on error occurring

−40–194

−40–194 (–40–90:) (When the coil thermistor detects 0˚F or below, “–” and temperature are displayed by turns.) (Example) When –15˚F;

0.5 s 0.5 s 2 s

˚F

1ON2 3 4 5 6

Compressor temperature (TH4) or discharge temperature (TH4) on error occurring 37–327

Compressor operating current on error occurring 0–50

Error history (1) (latest) Alternate display of abnormal unit number and code

Error history (2) Alternate display of error unit number and code

37–327 (3–164:) (When the temperature is 100˚F or more, the hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 130˚F;

0.5 s 0.5 s 2 s

˚F

Code

display

Code

display

0–50

When no error history, “ 0 ” and “– –” are displayed by turns.

1ON2 3 4 5 6

Thermostat 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 s 0.5 s 2 s

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 s 0.5 s 2 s

Minute

OCH607

SW2 setting

1ON2 3 4 5 6

Display detail

Explanation for display

Unit

Capacity setting display

Displayed as an outdoor capacity code

Code

display

1ON2 3 4 5 6

Outdoor unit setting information

Indoor pipe temperature/Liquid (TH2(1)) Indoor 1

−38–190

Code

display

˚F

−38–190 (−39–88:) (When the temperature is 0ºF or less, “–” and temperature are displayed by turns.)

1ON2 3 4 5 6

Indoor room temperature (TH1) 46–102

HA30N

Capacity Code

14 20

HA36N

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

Single phase

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.

1ON2 3 4 5 6

Indoor pipe temperature/Cond./Eva. (TH5(1)) Indoor 1

−38–190

−38–190 (−39–88:) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.)

˚F

−38–190 (−39–88:) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.)

˚F

46–102 (8–39:)

Indoor pipe temperature/Liquid (TH2(2)) Indoor 2

−38–190

Indoor pipe temperature/Cond./Eva. (TH5(2)) Indoor 2

−38–190

1ON2 3 4 5 6

The number of connected indoor units

Unit

0–3 (The number of connected indoor units are displayed.)

OCH607

1ON2 3 4 5 6

˚F

Discharge superheat. SHd 0–327

Cooling = TH4−TH6 Heating = TH4−TH5

0–327 (0–182:) (When the temperature is 100˚F or more, hun dreds digit, tens digit and ones digit are displayed by turns.)

˚F

Sub cool. SC 0–234

Cooling = TH6-TH3 Heating = TH5-TH2

0–234 (0–130:) (When the temperature is 100˚F 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.)

Code

display

U9 error detail history (latest)

Error details Code (No error) 00 Overvoltage 01 Undervoltage 02 Input current sensor error 04 ACTM error 20

DC bus voltage 180–370

180–370 (When it is 100V or more, hundreds digit, tens digit and ones digit are displayed by turns.)

1ON2 3 4 5 6

SW2 setting

1ON2 3 4 5 6

Display detail

Explanation for display Unit

˚F

1ON2 3 4 5 6

Indoor setting temperature 62–86

Outdoor pipe temperature/2-phase (TH6)

−38–190

Outdoor heat sink temperature (TH8)

−40–327

62–86 (17–30:)

˚F

−38–190 (−39–88:) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.)

−40–327 (−40–164:) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) (When the thermistor detects 100˚F or more, hundreds digit, tens digit and ones digit are displayed by turns.)

Outdoor ambient temperature (TH7)

−38–190

−38–190 (−39–88:) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.)

Display examples for multiple errors: Overvoltage (01) + Undervoltage (02) = 03 Input current sensor error (04) + ACTM error = 24

OCH607

SW2 setting

Display detail

Explanation for display Unit

1ON2 3 4 5 6

Capacity save 0–100 When air conditioner is connected to M-NET and capacity save mode is demanded, a value from “0” to “100” is displayed. When there is no setting of capacity save “100” is displayed.

0–100 (When the capacity is 100%, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 100%;

0.5 s 0.5 s 2 s

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 history (3) (Oldest) Alternate display of abnormal unit number and code.

When no error history, “0” and “– –“ are displayed by turns.

3: Outdoor pipe temperature/Liquid (TH3, TH32) 6: Outdoor pipe temperature/2-phase (TH6) 7: Outdoor ambient temperature (TH7) 8: Outdoor heat sink (TH8)

1ON2 3 4 5 6

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 100 Hz or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 125 Hz;

0.5 s 0.5 s 2 s

1ON2 3 4 5 6

Fan step on error occurring 0–10

0–10

1ON2 3 4 5 6

Step

OCH607

SW2 setting

Display detail

Explanation for display Unit

1ON2 3 4 5 6

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 s 0.5 s 2 s

˚F

Indoor room temperature (TH1) on error occurring 46–102

46–102 (8–39°C)

˚F

Indoor pipe temperature/Liquid (TH2) on error occurring

−38–190

−38–190 (−39–88°C) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) (Example) When −15˚F;

0.5 s 0.5 s 2 s

Indoor pipe temperature/Cond./Eva. (TH5) on error occurring

−38–190

−38–190 (−39–88°C) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) (Example) When –15˚F;

0.5 s 0.5 s 2 s

Outdoor pipe temperature/2-phase (TH6) on error occurring

−38–190

−38–190 (−39–88°C) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) (Example) When –15˚F;

0.5 s 0.5 s 2 s

Outdoor ambient temperature (TH7) on error occurring

−38–190

−38–190 (−39–88°C) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) (Example) When –15˚F;

0.5 s 0.5 s 2 s

Outdoor heat sink temperature (TH8) on error occurring

−40–392

−40–392 (−40–200°C) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) (When the temperature is 100˚F or more, hundreds digit, tens digit and ones digit are displayed by turns.)

1ON2 3 4 5 6

˚F

OCH607

SW2 setting Display detail Explanation for display Unit

°F

0–327 (0–182:) (When the temperature is 100˚F or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 150°F;

0.5 s 0.5 s 2 s

Sub cool on error occurring. SC 0–234

Cooling = TH6−TH3 Heating = TH5−TH2

0–234 (0–130:) (When the temperature is 100˚F or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 115°F;

0.5 s 0.5 s 2 s

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 s 0.5 s 2 s

1ON2 3 4 5 6

Discharge superheat on error occurring SHd 0–327

Cooling = TH4−TH6 Heating = TH4−TH5

1ON2 3 4 5 6

°F

Minute

1ON2 3 4 5 6

U9 Error details (To be shown while error call is deferred.)

Code

display

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.)

1ON2 3 4 5 6

0–480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.)

Pulse

1ON2 3 4 5 6

LEV-C opening pulse 0–480

Outdoor pipe temperature (TH33)

−38–190

1ON2 3 4 5 6

˚F

−38–190 (−39–88°C) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) (Example) When –15˚F;

0.5 s 0.5 s 2 s

Error details Code (No error) 00 Overvoltage 01 Undervoltage 02 Input current sensor error 04 ACTM error 20

Display examples for multiple errors: Overvoltage (01) + Undervoltage (02) = 03 Input current sensor error (04) + ACTM error = 24

OCH607

SW2 setting

Display detail

Explanation for display Unit

Controlling status of compressor operating frequency

1ON2 3 4 5 6

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 heat sink

(Example) The following controls are activated.

• Primary current control

• Preventive control for excessive temper-

ature rise of condensing temperature

• Preventive control for excessive temper-

ature rise of heat sink

LED

OCH607

EASY MAINTENANCE FUNCTION

11-1. SMOOTH MAINTENANCE

Maintenance data, such as the indoor/outdoor unit’s heat exchanger temperature and compressor operation current can be displayed with “Smooth maintenance”.

This cannot be executed during test operation. Depending on the combination with the outdoor unit, this may not be supported by some models.

F1 F2 F3 F4

Check menu

Cursor

Service menu:

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

Smooth maintenance

Begin:

Smooth maintenance

Exit:

Ref.address Stable mode

Cursor

−

Address

＋

Ref.address Stable mode

Stabilization→Collecting

Cool / Heat/ Normal

Smooth maintenance

Return:

Smooth maintenance

Return:

Smooth maintenance

Return:

Page

COMP. current COMP. run time COMP. On / Off COMP. frequency

Hr times

Ref. address

Cool

Ref.address

Cool

Ref.address

Cool

Sub cool OU TH4 temp. OU TH6 temp. OU TH7 temp.

IU air temp. IU HEX temp. IU filter time

Select "Smooth maintenance" with the F1 or F2 button, and press the button.

Select "Check" with the F1

or F2 button, and press the button.

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

button.

Set each item.

Select the item to be changed with the

F1orF2

button.

Select the required setting with the

button.

■

<Ref.address>setting [ 0 ] to [ 15 ]

■

<Stable mode>setting [ Cool ] / [ Heat ] / [ Normal ]

Press the

button, Fixed operation will start.

Note: Stable mode will take approx. 20 minutes.

The operation data will appear.

The Compressor-Accumulated operating (COMP. run) time is 10-hour unit, and the Compressor-Number of operation times (COMP. ON/OFF) is a 100time unit (fractions discarded).

Navigating through the screens

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

button

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

button

OCH607

11-2. GUIDE FOR OPERATION CONDITION

Inspection item Result

Power supply

Loose con-

nection

Breaker Good Retightened

Terminal block Outdoor Unit Good Retightened

Indoor Unit Good Retightened

(Insulation resistance) M"

(Voltage) V

1 Accumulated operating time Time

2 Number of ON/OFF times Times

3 Current A

Refrigerant/heat exchanger temperature

COOL °F HEAT °F

Refrigerant/discharge temperature

COOL °F HEAT °F

6 Air/outside air temperature COOL °F HEAT °F

(Air/discharge temperature) COOL °F HEAT °F

Appearance Good

Cleaning required

Heat exchanger Good

Cleaning required

Sound/vibration None Present

Air/intake air temperature COOL °F HEAT °F

(Air/discharge temperature) COOL °F HEAT °F

Refrigerant/heat exchanger temperature

COOL °F HEAT °F

Filter operating time *

Time

Decorative panel Good

Cleaning required

Filter Good

Cleaning required

Fan Good

Cleaning required

Heat exchanger Good

Cleaning required

Sound/vibration None Present

Com-

pressor

Temperature

Cleanli-

ness

Outdoor Unit

Temperature

Cleanliness

Indoor Unit

*1 The filter operating time is the time that has elapsed since the filter was reset.

Check Points

Enter the temperature differences between 5, 4, 7 and 8 into the graph given below. Operation state is determined according to the plotted areas on the graph. For data measurements, set the fan speed to "Hi" before activating maintenance mode.

Is "000" displayed stably in Display D on the remote controller?

Is "000" displayed stably in Display

on the remote controller?

(

Discharge temperature) – (4 Outdoor

heat exchanger temperature)

(

Indoor intake air temperature) – (

Indoor heat exchanger temperature)

(

Discharge temperature) – (8 Indoor

heat exchanger temperature)

(

Indoor heat exchanger temperature) –

(

Indoor intake air temperature)

Cool

Classification Item Result

Inspection

Temperature

difference

Heat

Inspection

Temperature

difference

Stable Unstable

°F

Stable Unstable

°F

Notes:

Fixed Hz operation may not be possible under the following temperature ranges. A)In cool mode, outdoor intake air temperature is 104 °For higher or

indoor intake air temperature is 73 °F or lower.

B)In heat mode, outdoor intake air temperature is 68 °F or higher or

indoor intake air temperature is 77 °F or lower.

2. If the air conditioner is operated at a temperature range other than the ones above but operation is not stabilized after 30 minutes or more have elapsed, carry out inspection.

3. In heat mode, the operation state may vary due to frost forming on the outdoor heat exchanger.

°F

ºF

0 18 36 54 72 90 108 126 144

Normal

Filter inspection

Inspection C

Inspection A

Inspection B

°F

°F°F

Normal

Filter inspection

Inspection C

Inspection A

Inspection B

Cool mode Heat mode

(

Indoor intake air temperature)— (

Indoor

heat exchanger temperature)

(

Indoor heat exchanger temperature) —

(

Indoor intake air temperature)

[5 Discharge temperature] – [4 Outdoor heat exchanger temperature)

[5 Discharge temperature] – [8 Indoor heat exchanger temperature)

Result

Normal operation state

Filter may be clogged.

Performance has dropped. Detailed in-

spection is necessary.

Refrigerant amount is dropping.

Filter or indoor heat exchanger may be

clogged.

Area Check item

Judgment

Cool Heat

Normal

Filter inspection

Inspection A

Inspection B

Inspection C

18 36 54 72 90 108 126 144

Note: The above judgment is just guide based on Japanese standard conditions. It may be changed depending on the indoor and outdoor temperature.

It may be judged as “filter inspection” due to the outdoor and indoor

temperature, even though it is not clogged.

OCH607

12 FUNCTION SETTING

Power failure automatic recovery Indoor temperature detecting

LOSSNAY connectivity

Power supply voltage Frost prevention temperature Humidifier control

Change of defrosting control

Not available Available Average data from each indoor unit Data from the indoor unit with remote controllers Data from main remote controller Not supported Supported (indoor unit dose not intake outdoor air through LOSSNAY) Supported (indoor unit intakes outdoor air through LOSSNAY) 230 V 208 V 36°F [2:] (Normal) 37°F [3:] When the compressor operates, the humidifier also operates. When the fan operates, the humidifier also operates. Standard For high humidity

1 2 1 2 3 1 2 3 1 2 1 2 1 2 1 2

(101)

(–)

(103)

(104)

(115)

(116)

(117)

The setting is applied to all the units in the same refrigerant system.

Mode No.

Wired remote controller

(RF thermostat)

Function Settings

Setting No.

: Initial setting

(when sent from the factory)

Remarks

12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

Each function can be be set as necessary 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.

(1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.)

<Table 1> Function selections

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

OCH607

Function

Settings

Setting No.

Filter sign

100h 2500h "Clean the filter" indicator is not displayed

Air flow

Quiet

(

Fan speed

)

Standard High ceiling

No.of air outlets

4 directions 3 directions 2 directions

Optional high efficiency

Not supported

filter

Supported

Vane setting

No vanes (Vane No.3 setting: PLA only) Vane No.1 setting Vane No.2 setting

Optional humidifier

Not supported

(

PLA only

)

Supported

Vane differential setting

No.1 setting (TH5: 75−82˚F [24–28:])

in heating mode

No.2 setting (Standard, TH5: 82–90˚F [28–32:])

(

cold wind prevention

)

No.3 setting (TH5: 90–100˚F [32–38:])

Swing

Set temperature in heating mode (7.2˚F [4:] up

) *1

Fan speed when the

Extra low

heating thermostat is OFF

Stop Keeping fan speed set by remote controller

Fan speed when the

Keeping fan speed set by remote controller

cooling thermostat is OFF

Stop

Detection of abnormality of

Detect

(107)

(108)

(109)

(110)

(111 )

(113)

(114)

(123)

(124)

(125)

(127)

(128)

the pipe temperature (P8

)

Neglect

1 2 3 1 2 3 1 2 3 1 2 1 2 3 1 2 1 2 3 1 2 1 2 1 2 3 1 2 1 2

Not available Swing Available Wave air flow Available Not available

}

PLA-BA

: Initial setting (Factory setting

)

- : Not available

4-Way

cassette

PLA-BA

PKA-HA

PKA-HAL

PKA-KA

PKA-KAL

Ceiling

Suspended

PCA-KA

Mode No.

Wired remote controller

(RF thermostat)

Wall mounted

(2) Functions available when setting the unit number to 01-03 or AL (07 in the case of the IR wireless remote controller)

• When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the indoor unit number.

• When setting functions for a simultaneous twin indoor unit system, set the unit number to 01 to 03 for each indoor unit in case of selecting different functions for each unit referring to 4 setting the indoor unit number.

• When setting the same functions for an entire simultaneous Twin-indoor unit system, set refrigerant address to AL (07 in the case of the IR wireless remote controller) referring to 4 setting the indoor unit number.

Mode No.11

Setting No. Settings PLA-BA

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.

PCA-KA

No vane function

Standard Less draft *

(

Upward position than the standard

)

*1 PKA-HA(L)/KA(L): 3.6-F [2:]) up

OCH607

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 button 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

12-1-1. Selecting functions using the wired remote controller

OCH607

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 5 Mode 6 Mode 15 Mode 16

Grp.

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.

OCH607

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

CHECK

RESET

SET

CLOCK

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.

1 Check the function selection setting.

2 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".

3 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

8 End function selection mode. (End troubleshooting mode.)

YES

Note: When you switch to function selection mode on the IR wireless remote controller's operation area, the unit ends function selection mode automatically if nothing is input for 10 minutes or longer.

5 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]

12-1-2. Selecting functions using the IR wireless remote controller (Type C)

Functions can be selected with the IR wireless remote controller. Function selection using the IR wireless remote controller is available only for refrigerant system with wireless function. Refrigerant address cannot be specified by the IR 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 IR 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 IR wireless remote controller toward the receiver of the indoor unit and press the

min

button.

Notes:

1. 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.

2. 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 degrees

during heat operation. Direct the IR 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) Notes:

1. 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.

2. 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 IR 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 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 three times)

Notes:

1. If a setting number that cannot be recognized by the unit is entered, the setting will turn back to the original setting.

2. 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. Note: Do not use the IR wireless remote controller for 30 seconds after completing the function setting.

CHECK

min

OCH607

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 Temp. Fan

Cool Auto

Main

Main display:

Cursor Page

Main menu

Vane·Louver·Vent. (Lossnay) High power Timer Weekly timer OU silent mode

Function guide

12-2. FUNCTION SELECTION OF REMOTE CONTROLLER

OCH607

Not all functions are available on all models of indoor units.

Energy saving

Auto return

Schedule

Night setback

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

Weekly timer

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

Check

Self check

Maintenance password

Remote controller check

Test run

Clock

Auto descending panel

Menu structure

Filter information

Error information

OCH607

Setting and display items Setting details

Vane · Louver · Vent. (Lossnay) Use to set the vane angle.

• Select a desired vane setting from 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 8 operation patterns can be set for each day. (Not valid when the ON/OFF timer is enabled.)

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

speci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 4 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% or 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 lter status.

• The lter sign can be reset.

Error information Use to check error information when an error occurs.

• Check 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 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.

Display details Make the settings for the remote controller related items as necessary.

Clock: The initial 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 code: Details of the operation data including each thermistor temperature and error history can be checked.

Self check Error history of each unit can be checked via the remote controller. Maintenance password Use 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.

Main menu list

* Clock setting is required.

OCH607

12-3. Function selection of the IR wireless remote controller TEMPERATURE DISPLAY -C/-F SETTING (Change of temp mode from -F to -C)

1 Press the set button with something sharp at the end.

MODEL SELECT

blinks.

2 Press the

AUTO START

button. “°F” blinks.

3 Press the

button. “°C” blinks.

4 Press the set button with something sharp at the end.

MODEL SELECT

is lighted for 3 seconds, then turned off.

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

min

LOUVER

MODE

CHECK

RESETSET CLOCK

MODEL SELECT

NOT AVAILABLE

SWING

CHECK

FAN

TEST

RUN

°F °C

AMPMSTOP

START

AMPM

COOL

DRY

AUTO

FAN

HEAT

1 4

OCH607

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

Details on the operation data including each thermistor temperature and error history can be con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: 156

°F

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

13-1. HOW TO "MONITOR THE OPERATION DATA"

13-1-1. PAR-30MAA/PAR-31MAA

OCH607

13-2. REQUEST CODE LIST

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

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-Ambient 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 <Measured by thermostat>

Indoor unit-Intake air temperature (Unit No. 1)

Indoor unit-Intake air temperature (Unit No. 2)

Indoor unit-Intake air temperature (Unit No. 3)

Indoor unit-Intake air temperature (Unit No. 4)

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)

Thermostat ON operating time

Test run elapsed time

Refer to “13-2-1. Detail Contents in Request Code”.

0–50

0–9999

37–327

−40–194

0–9999

0–50

–

10 hours

100 times

°F

Outdoor suction pipe temperature (TH32)

°F

Step

rpm

Pulses

LEV (C) opening

Pulses

Units

°F

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.

−38–190

−40–327

0–327

0–234

0–255

0–10

0–500

180–370

0–4

62–86

46–102

−38–190

0–999

0–120

OCH607

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-Microcomputer version information

Outdoor unit-Microcomputer 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)

Refer to “13-2-1.Detail Contents in Request Code”.

Refer to

“13-2-1.Detail Contents in Request Code”.

Refer to “13-2-1.Detail Contents in Request Code”.

"0000": Not connected

Examples) Ver 5.01 →

Auxiliary information (displayed after

version information)

Examples) Ver 5.01 A000 →

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 “13-2-1.Detail Contents in Request Code”.

Refer to 13-2-1.Detail Contents in Request Code.

Refer to “13-2-1.Detail Contents in Request Code”.

"0001": Connected

"0000": Not washed "0001": Washed

"0501"

"A000"

0–255

OCH607

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".

Code

Sensor

number

–

10 hours

100 times

˚F

Step

rpm

Pulses

Minutes

˚F

"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 or more indoor units (twin).

Average value of all indoor units is displayed if the air condi-

tioner consists of 2 or more 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-Heat sink temperature (TH8) at time of error

Discharge super heat (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

Thermostat ON time until operation stops due to error

Indoor - Liquid pipe temperature at time of error

Indoor-Cond./Eva. pipe temperature at time of error

Indoor at time of error

· Intake air temperature <Thermostat judge temperature>

Indoor-Actual intake air temperature

Indoor - Liquid pipe temperature

Indoor-Cond./Eva. pipe temperature

0–9999

37–327

−40–194

−38–190

−40–327

0–327

0–234

0–255

0–10

0–9999

0–500

0–999

−38–190

0–50

0–9999

OCH607

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

Fan control data

00 **" "**" indicates fan control data.

"00 **" "**" indicates fan control data.

Refer to “13-2-1 Detail Contents in Request Code”.

Undefined

Refer to “13-2-1 Detail Contents in Request Code”.

Undefined

Examples) Ver 5.01 → "0501"

Auxiliary information (displayed after version information)

Examples) Ver 5.01 A000 → "A000"

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-Microcomputer version information

Indoor unit-Microcomputer 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 “13-2-1 Detail Contents in Request Code”.

0–9999

0–255

OCH607

Frequency control state

Display

Discharge temperature

Condensation temperature

Anti-freeze

Heat sink temperature

overheat prevention

protection control

overheat prevention 0 1 Controlled 2 Controlled 3 Controlled Controlled 4 Controlled 5 Controlled Controlled 6 Controlled Controlled 7 Controlled Controlled Controlled 8 Controlled 9 Controlled Controlled

A Controlled Controlled

b Controlled Controlled Controlled

C Controlled Controlled

d Controlled Controlled Controlled

E Controlled Controlled Controlled F Controlled Controlled Controlled Controlled

13-2-1. Detail Contents in Request Code

[Operation state] (Request code ":0")

Data display

Example) Request code "004"

Discharge temperature 156°F Refrigerant address "00"

Relay output state

Operation mode

[Indoor unit – Control state] (Request code :" 50 ")

Data display

Operation mode

Display Operation mode

0 STOP • FAN

C COOL • DRY H HEAT

d DEFROST

Relay output state

Display

Power currently

Compressor 4-way valve Solenoid valve

supplied to compressor

Unit No. 4 state

Unit No. 3 state

Unit No. 2 state

Unit No. 1 state

Display State

0 Normal 1 Preparing for heat operation. 2 – 3 – 4 Heater is ON. 5 Anti-freeze protection is ON. 6 Overheat protection is ON. 7 Requesting compressor to turn OFF.

F There are no corresponding units.

[Outdoor unit – Control state] (Request code ":51")

Data display State 0 0 0 0 Normal 0 0 0 1 Preparing for heat operation. 0 0 0 2 Defrost

[Compressor – Frequency control state] (Request code ":52")

Data display

Frequency control state

Display Current limit control

0 No current limit 1 Primary current limit control is ON. 2 Secondary current limit control is ON.

–

ON ON

0 1 2 3 4 5 6 7 8 A

–

ON ON ON ON

–

ON ON

–

Request:

Request code

Ref.address

Request code

Cursor

−＋

OCH607

[Fan control state] (Request code :" 53 ")

Data display

Fan step correction value by heatsink temperature overheat prevention control

Fan step correction value by cool condensation temperature overheat prevention control

Display Correction value

- (minus) – 1 0 0

[Actuator output state] (Request code :"54")

Data display

Actuator output state 1

Actuator output state 2

Actuator output state

Display SV1 Four-way valve Compressor

0 1

2 3

4 5

6 7

8 9

E F

ON ON

ON ON ON ON

ON ON

ON ON ON ON

Actuator output state

Display 52C SV2 SS

0 1

2 3 4 5 6 7

ON ON

ON ON ON ON

[Error content (U9)] (Request code :"55")

Data display

Error content 1

Error content 2

Error content

: Detected

Display

Overvoltage Undervoltage L

-phase

Power synchronizing

error error open error

signal error 0 1 2 3 4 5 6 7 8 9

E F

Error content

: Detected

Display

Converter Fo

PAM error

error 0 1 2 3

Compressor is

warming up

OCH607

[Contact demand capacity] (Request code "61")

Data display

000

Setting content

[External input state] (Request code "62")

Data display

000

Input state

Input state : Input present

Display

Contact demand Silent mode Spare 1 Spare 2

input input input input 0 1 2 3 4 5 6 7 8 9

[Outdoor unit – Capacity setting display] (Request code : "70")

Data display

Capacity

10 18

9 12

11 24 14 30 20 36 25 42

[Outdoor unit – Setting information] (Request code "71")

Data display

Setting information 1

Setting information 2

Setting information 1

Display Defrost mode

0 Standard 1 For high humidity

Setting information 2

Display

Single-/ Heat pump/

three-phase

cooling only

Single-phase

Heat pump

Cooling only

Three-phase

Heat pump

Cooling only

Setting content

Display Setting value

Setting

SW7-1 SW7-2 0 1 50%

2 75% ON

3 100%

OCH607

SW1, SW2, SW6, SW7

123456

000000 00 00 100000 00 01 010000 00 02 11 0000 00 03 001000 00 04 101000 00 05 011000 00 06 11 1000 00 07 000100 00 08 100100 00 09 010100 00 0A 11 0100 00 0b 00110 0 00 0C 10110 0 00 0d 01110 0 00 0E 11 1100 00 0F 000010 00 10 100010 010010 11 0010 001010 101010 011010 11 1010 00011 0 10011 0 01011 0 11 0110 00111 0 10111 0 01111 0 11 111 0 000001 100001 010001 11 0001 001001 101001 011001 11 1001 000101 100101 010101 11 0101 00110 1 10110 1 01110 1 11 1101 000011 100011 010011 11 0011 001011 101011 011011 11 1011 00011 1 10011 1 01011 1 11 0111 00111 1 10111 1 01111 1 11 111 1

[Outdoor unit switch setting display (SW1 to SW10, except SW3)] Request codes: 73 to 82

0: Switch OFF 1: Switch ON

Data display

SW5

1234

0000 00 00 1000 00 01 0100 00 02 11 00 00 03 0010 00 04 1010 00 05 0110 00 06 11 10 00 07 0001 00 08 1001 00 09 0101 00 0A 11 01 00 0b 0011 00 0C 1011 00 0d 0111 00 0E 11 11 00 0F

0: Switch OFF 1: Switch ON

Data display

SW8

123

000 00 00 100 00 01 010 00 02 11 0 00 03 001 00 04 101 00 05 011 00 06 11 1 00 07

0: Switch OFF 1: Switch ON

Data display

SW4, SW9, SW10

0 0 00 00 1 0 00 01 0 1 00 02 1 1 00 03

0: Switch OFF 1: Switch ON

Data display

00 11 00 12 00 13 00 14 00 15 00 16 00 17 00 18 00 19 00 1A 00 1B 00 1C 00 1D 00 1E 00 1F 00 20 00 21 00 22 00 23 00 24 00 25 00 26 00 27 00 28 00 29 00 2A 00 2B 00 2C 00 2D 00 2E 00 2F 00 30 00 31 00 32 00 33 00 34 00 35 00 36 00 37 00 38 00 39 00 3A 00 3B 00 3C 00 3D 00 3E 00 3F

OCH607

[Indoor unit – Model setting information] (Request code : 162 )

Data display

See the table on the right.

Display Model setting state Display Model setting state

00 20 01 21 02 22

PLA-A·BA

03 23 04 24 05 25 06 26 07 27 08 28 09 29 0A 2A 0b 2b 0C 2C 0d 2d 0E 2E 0F 2F 10 30 11 31 12 32 13 33 14 34 15 35 16 36 17 37 18 38 19 39 1A 3A 1b 3b 1C 3C 1d 3d 1E 3E 1F 3F

[Indoor unit – Capacity setting information] (Request code 163 )

Data display

See the table on the right.

Display Capacity setting state Display Capacity setting state

00 10 42 01 11 02 12 03 13 04 14 05 15 06 12 16 07 17 08 18 09 18 19 0A 1A 0b 24 1b 0C 1C 0d 30 1d 0E 1E 0F 36 1F

Display Pair No. setting state

00 No. 0 01 No. 1 J41 disconnected 02 No. 2 J42 disconnected 03 No. 3 J41, J42 disconnected

[Wireless pair No. (indoor control board side) setting] (Request code 165 )

Data display

See the table on the right.

PEA-A·AA PCA-A·KA PKA-A·HA(L)/KA(L)

PEAD-A·AA PEAD-A·AA

PVA-A·AA

PEAD-A·AA PEAD-A·AA

OCH607

PUZ-HA30NHA5 PUZ-HA36NHA5

Fan motor fixing screws

Fan motor

Fan motor fixing screws

Propeller

Front panel

Nut

14 DISASSEMBLY PROCEDURE

OPERATING PROCEDURE PHOTOS & ILLUSTRATION

1. Removing the service panel and top panel

(1) Remove the service panel fixing screws (3 for front/ 5 x

12), then slide the service panel downward to remove it. (The service panel is fixed to the side panel (R) with a hook on the right side.)

(2) Remove the top panel fixing screws (3 for front and 3 for

rear/ 5 x 12) to remove the top panel.

Note:

When removing service panel and top panel at the

same time, count one less screw since they share a screw.

2. Removing the fan motor (MF1, MF2)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the fan grille fixing screws (5 for front/ 5 x 12) to

remove the fan grille. (See Figure 1) (For the each fan motor on top and under)

(4) Remove the screw of nut (1 for front/ M6), then slide the

propeller fan forward to remove it. (For the each fan motor on top and under)

(5) Disconnect the connectors, CNF1 (WT) and CNF2 (WT)

on the controller circuit board in the electrical parts box. (See Photo 3)

(6) Loosen the clamp for the lead wire on motor support,

separator, and electrical parts box.

(7) Remove the fan motor fixing screws (4 for front/ 5 x 20) to

remove the fan motor. (For the each fan motor on top and under)

Top panel fixing screws

Top panel

Service panel fixing screws

Cover panel (front)

Service panel

Fan grille fixing screws

Fan grille

Grille fixing screws

Slide

Photo 1

Photo 2

Figure 1

OCH607

OPERATING PROCEDURE PHOTOS

3. Removing the electrical parts box

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3)

Disconnect the power supply cable from terminal block.

(4) Disconnect the indoor/outdoor connecting wire from

terminal block.

(5) Disconnect the connector CNF1 (WT), CNF2 (WT), TH3

(WT), TH4 (WT), TH7/ 6 (RD), TH32 (BK), TH33 (YE), 63H (YE), 63L (RD), 21S4 (GN), LEV-A (WT), LEV-B (RD), LEV-C (BU) from the controller circuit board. <Symbols on the board>

• Fan motor (CNF1, CNF2)

• Thermistor <Liquid> (TH3)

• Thermistor <Discharge> (TH4)

• Thermistor <Ambient/2-Phase Pipe> (TH7/6)

• Thermistor <Suction> (TH32)

• Thermistor <Ref. check> (TH33)

• High pressure switch (63H)

• Low pressure switch (63L)

• 4-way valve (21S4)

• LEV (LEV-A, LEV-B, LEV-C)

(6)

Loosen the clamps, fasteners and cable strap for the lead

wire in the electrical parts box and separator. (7) Loosen the lead wires fixed to the pipes with bands. (8) To disconnect the COMP lead wire, remove the terminal

cover. (9) Remove the electrical parts box fixing screw (1 for front/

4 x 10), then slide the electrical parts box upward to

remove it.

(The electrical parts box is fixed to the side panel (R)

with a hook on the right side, and to the separator with a

hook on the left side.)

Photo 3

Electrical parts box

Controller circuit board(C.B.)

Electrical parts box fixing screw

Terminal cover

Compressor (MC)

Terminal block (TB1)

Cover panel (rear)

Side panel (R)

Valve bed

OCH607

OPERATING PROCEDURE PHOTOS

4. Removing the thermistor <2-Phase Pipe> (TH6)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connector TH7/6 (RD) on the controller

circuit board in the electrical parts box. (See Photo 3)

(4) Loosen the fastener for the lead wire in the electrical parts

box.

(5) Loosen the clamp for the lead wire on the rear of electrical

parts box.

(6) Pull out the thermistor <2-phase pipe> (TH6) from

thermistor holder.

Note: When replacing thermistor <2-phase pipe> (TH6),

replace it together with thermistor <Ambient> (TH7) since they are combined together. Refer to procedure No.5 to remove the thermistor <Ambient> (TH7).

5. Removing the thermistor <Ambient> (TH7)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connector TH7/6 (RD) on the controller

circuit board in the electrical parts box. (See Photo 3)

(4)

Loosen the fastener for the lead wire in the electrical parts box.

(5) Loosen the clamps for the lead wire on rear of the

electrical parts box.

(6)

Pull out the thermistor <Ambient> (TH7) from sensor holder.

6. Removing the thermistor <Discharge> (TH4)

(1) Remove the service panel. (See Figure 1) (2) Disconnect the connector TH4 (WT) on the controller

circuit board in the electrical parts box. (See Photo 3)

(3) Loosen the fastener, cable strap and band for the lead

wire on the controller circuit board in the electrical parts

box. (4) Loosen clamps for the lead wire on the separator. (5) Pull out the thermistor <Discharge> (TH4) from the

thermistor holder.

7. Removing the thermistor <Liquid> (TH3) and thermistor <Suction> (TH32).

(1) Remove the service panel. (See Figure 1) (2) Disconnect the connector, TH3 (WT), TH32 (BK) on the

controller circuit board in the electrical parts box. (See Photo 3)

(3) Loosen the fastener, cable strap and band for the lead

wire on the controller circuit board in the electrical parts

box. (4)Loosen the clamp for the lead wire on separator. (5) Pull out the thermistor <Liquid> (TH3) from thermistor

holder. (6) Pull out the thermistor <Suction> (TH32) from thermistor

holder.

Note: When replacing thermistor <Ambient> (TH7), replace

it together with thermistor <2-phase pipe> (TH6), since they are combined together. Refer to procedure No.4 to remove the thermistor <2-phase pipe>(TH6).

Photo 7

Photo 8

Photo 6

Clamp

Muffler

Separator

Compressor (MC)

Thermistor <Discharge> (TH4)

Photo 4

Clamp

Heat exchanger

Thermistor <2-phase pipe> (TH6)

Electrical parts box

Sensor holder

Photo 5

Lead wire of thermistor <Ambient> (TH7)

Clamp (for TH3)

Thermistor <Liquid> (TH3)

Power receiver

Thermistor <Suction> (TH32)

Low pressure switch(63L)

OCH607

OPERATING PROCEDURE ILLUSTRATION

8. Removing the thermistor <Ref. check> (TH33)

(1) Remove the service panel. (See Figure 1) (2) Disconnect the connector, TH33 (YE), on the controller

circuit board in the electrical parts box. (See Photo 3)

(3) Loosen the fastener and clamp for the lead wire on the

controller circuit board in the electrical parts box.

(4) Pull out the thermistor <Ref. check> (TH33) from

thermistor holder.

9. Removing the 4-way valve coil (21S4), LEV coil (LEV-A, LEV-B, LEV-C) and lead wire for high pressure switch (63H) and low pressure switch (63L).

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 3) (4) Loosen the clamp for the lead wire on separator.

[Removing the lead wire for pressure switch]

(5) Disconnect the lead wire from the pressure switch.

[Removing the 4-way valve coil]

(5) Remove the 4-way valve coil fixing screw (1 for front/ M4)

to remove the 4-way valve coil.

(6) Slide the 4-way valve coil forward to remove it.

[Removing the LEV coil]

(5) Loosen the lead wires fixed to the pipes with bands. (6) Slide the LEV coil upward to remove it.

10. Removing the 4-way valve, LEV (LEV-A, LEV-B, LEV-C), high pressure switch and low pressure swich.

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 3) (4) Remove the cover panel (front). (See Figure 1) (5) Remove the cover panel (rear). (See Photo 3) (6) Remove the valve bed. (See Photo 3) (7) Remove the side panel (R). (8) Recover refrigerant.

[Removing the 4-way valve]

(9) Remove the 4-way valve coil. (See Figure 2) (10) Remove the welded part of 4-way valve (4 positions) to

remove the 4-way valve.

[Removing the LEV]

(9) Remove the LEV coil. (See Figure 2) (10) Remove the welded part of LEV (2 positions) to remove

the LEV.

[Removing the pressure switch]

(9) Disconnect the lead wire from the pressure switch. (10) Remove the welded part of pressure switch

(1 position) to remove the pressure switch.

Note 1: Recover refrigerant without spreading it in the

air.

Note 2: The welded part can be removed easily by

removing the side panel (R).

Note 3: When installing the following parts, cover it

with a wet cloth to prevent it from heating as the temperature below, then braze the pipes so that the inside of pipes are not oxidized;

• 4-way valve, 250°F [120°C] or more

• LEV, 250°F [120°C] or more

• Pressure switch, 210°F [100°C] or more

Figure 2

LEV coil (LEV-C)

LEV (Linear expansion valve)

LEV coil (LEV-A)

Thermistor <Ref. check> (TH33)

LEV

LEV coil (LEV-B)

Low pressure switch (63L)

High pressure switch (63H)

4-way valve coil (21S4)

4-way valve

4-way valve coil fixing screw

OCH607

OPERATING PROCEDURE PHOTOS

11. Removing the reactor (DCL) and capacitor (CB)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 3)

[Removing the reactor]

(4) Remove the reactor fixing screws (4 for rear/4 × 10) and

remove the reactor.

[Removing the capacitor]

(4) Remove the capacitor band fixing screws (2 for rear/

4 × 10) and remove the capacitor.

(The reactor and capacitor are fixed to the electrical parts box on the rear side.)

12. Removing the compressor (MC)

(1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 3) (4) Remove the cover panel (front). (See Figure1) (5) Remove the cover panel (rear). (See Photo 3) (6) Remove the valve bed. (See Photo 10) (7) Remove the side panel (R). (See Photo 3) (8) Remove the front panel fixing screws (4 for front/ 5x12

and 2 for front/ 4x10), then slide the front panel upward to remove it. (The front panel is fixed with 4 hooks; 3 on the left side fixing to the side panel (L), and the other on the right side fixing to the separator.)

(9) Remove the separator fixing screws (3 for front/ 4x10),

then slide the separator upward to remove it.

(

The

separator is fixed to a hook of the side plate.) (10) Recover refrigerant. (11) Remove the welded part of compressor (2 positions). (12) Remove the 3 compressor fixing nuts (M6) to remove the

compressor.

Note 1:

Recover refrigerant without spreading it in the air.

Note 2: The compressor can be easily removed by

removing separator.

Capacitor band fixing screws

Photo 9

Reactor fixing screws

Reactor (DCL)

Electrical parts box

Capacitor (CB)

Photo 10

Compressor (MC)

Valve bed

Separator

Power receiver

Compressor fixing nuts

OCH607

HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

New publication, effective Oct. 2015 Specifications are subject to change without notice.

Mitsubishi Electric PUZ-HA30NHA5, PUZ-HA36NHA5 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual