Mitsubishi PUHZ-P100VHA(1), PUHZ-P125VHA(1), PUHZ-P140VHA(1) Service Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

R410A

Outdoor unit [model names]

PUHZ-P100VHA

[Service Ref.]

PUHZ-P100VHA.UK PUHZ-P100VHA1.UK

PUHZ-P125VHA

PUHZ-P125VHA.UK PUHZ-P125VHA1.UK

PUHZ-P140VHA

PUHZ-P140VHA.UK PUHZ-P140VHA1.UK

December 2006

No.OC359

REVISED EDITION-B

Revision:

•

PUHZ-P100/125/140VHA1.UK

are

added in REVISED

EDITION-B.

• Some descriptions have been modified.

• Please void OC359 REVISED EDITION-A.

Note:

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

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

• For servicing of RoHS compliant products, refer to the RoHS Parts List.

PUHZ-P100VHA.UK PUHZ-P100VHA

1.UK

CONTENTS

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

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

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

4. FEATURES ·····················································6

5. SPECIFICATIONS···········································7

6. DATA·······························································8

7. OUTLINES AND DIMENSIONS ····················11

8. WIRING DIAGRAM·······································13

9. WIRING SPECIFICATIONS··························15

10.

REFRIGERANT SYSTEM DIAGRAM

11. TROUBLESHOOTING···································22

12. FUNCTION SETTING····································72

13. EASY MAINTENANCE FUNCTION··············78

14.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

15. DISASSEMBLY PROCEDURE ·····················91

16. PARTS LIST················································101

17. RoHS PARTS LIST ·····································107

··············20

············81

Model name Service Ref.

Service

Manual No.

PLA-RP50/60/71AA

PLA-RP100/125/140AA2

PLA-RP50/60/71AA.UK

OC335

OC357

PLA-RP100/125/140AA2.UK

PCA-RP71/125HA

OC329

PCA-RP71/125HA

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

OC328

PCA-RP50GA2 PCA-RP50GA2

PKA-RP50GAL PKA-RP50GAL

OC330

PSA-RP71/100/125/140GA PSA-RP71/100/125/140GA

OC332

PKA-RP60/71/100FAL PKA-RP60/71/100FAL PKA-RP50FAL2 PKA-RP50FAL2

OC331

PEAD-RP60/71/100GA

PEAD-RP60/71/100GA.UK

HWE05060

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

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

HWE05210

2-2.TECHNICAL DATA BOOK

Manual No. OCS06

TECHNICAL CHANGES

PUHZ-P100VHA.UK ➔ PUHZ-P100VHA1.UK

PUHZ-P125VHA.UK ➔ PUHZ-P125VHA PUHZ-P140VHA.UK ➔ PUHZ-P140VHA

1. NOISE FILTER CIRCUIT BOARD(N.F.) has been changed.

2. ACTIVE FILTER MODULE (ACTM) has been changed.

3.52C Relay (52C) and rush current protect resister (RS) are mounted to the NOISE FILTER CIRCUIT BOARD(N.F.).

1.UK

REFERENCE MANUAL

2-1. INDOOR UNIT’S SERVICE MANUAL

3 SAFETY PRECAUTION

Use new refrigerant pipes.

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

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

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

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

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

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

· Avoid using thin pipes.

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.

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.

Keep the tools with care.

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

Do not use a charging cylinder.

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

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

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

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

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

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

3-1. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

[1] Cautions for service

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

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

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

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

Unit

Gravimeter

[3] Service tools

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

No. Specifications

1 Gauge manifold ·Only for R410A

·Use the existing fitting

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

2 Charge hose ·Only for R410A

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

3 Electronic scale 4 Gas leak detector ·Use the detector for R134a, R407C or R410A. 5 Adaptor for reverse flow check ·Attach on vacuum pump. 6 Refrigerant charge base 7 Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

8 Refrigerant recovery equipment

specifications

Cylinder with syphon

. (UNF1/2)

(2) Cautions for refrigerant piping work

1/4” 3/8” 1/2” 5/8” 3/4”

6.35

9.52

12.70

15.88

19.05

0.8

1.0

—

0.8

1.0

Nominal

dimensions

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

(mm)

R410A R22 1/4” 3/8” 1/2” 5/8” 3/4”

6.35

9.52

12.70

15.88

19.05

9.1

13.2

16.6

19.7

—

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions

Flare cutting dimensions

Outside

diameter

Dimension A

( )

-0.4

(mm)

R410A R22 1/4” 3/8” 1/2” 5/8” 3/4”

6.35

9.52

12.70

15.88

19.05

17.0

22.0

26.0

29.0

—

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions

Flare nut dimensions

Outside

diameter

Dimension B

(mm)

R410A

w36.0mm for

indoor unit of RP100, 125 and 140

R22

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 and refrigerant charge Operation check and the two above Gas leak check Collection of 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 Charge refrigerant Check the degree of vacuum. (Vacuum

valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Charge 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 for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used Tools for other refrigerants can be used

Tool exclusive for R410A

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

(Usable if equipped

with adopter for rever se flow)

(Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil: Alkylbenzene oil: minimum amount

(Usable if equipped

with adopter for rever se flow)

(Usable by adjusting

flaring dimension)

: 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.

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

1Thickness of pipes

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

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 of its working pressure higher than that of other refriger-

ants. Therefore, to enhance airtightness and intensity, flare cutting dimension of copper pipe for R410A have been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also have partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2” and 5/8”, the dimension B changes. Use torque wrench corresponding to each dimension.

Dimension A

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

Dimension B

4 FEATURES

PUHZ-P125VHA.UK PUHZ-P125VHA PUHZ-P140VHA.UK

PUHZ-P140VHA1.UK PUHZ-P100VHA.UK PUHZ-P100VHA1.UK

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

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

1.UK

5 SPECIFICATIONS

A A

/min(CFM

)

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

kg(lbs) kg(lbs)

L mm(in.) mm(in.)

Power supply (phase, cycle, voltage)

Running current

Max. current External finish Refrigerant control Compressor

Model

Motor output

Starter type

Protection devices

Crankcase heater Heat exchanger Fan Fan(drive) o No.

Fan motor output

Airflow Defrost method Noise level

Dimensions

Weight Refrigerant

Charge

Oil (Model) Pipe size O.D.

Connection method Between the indoor &

outdoor unit

Mode

Cooling Heating

D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

Service Ref.

PUHZ-P100VHA.UK PUHZ-P100VHA

1.UK

Cooling

12.26

TNB220FLDM

Propeller fan o 1

0.060

60(2120)

50 54

943(37-1/8)

75(165)

2.7(6.0)

0.87(MEL56)

Max. 50m

Munsell 5Y 7/1

Linear Expansion Valve

Hermetic

2.3

Line start

—

Plate fin coil

Reverse cycle

950(37-3/8)

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

R410A

9.52(3/8)

15.88(5/8) Flared Flared

Max. 30m

Heating

12.62

HP switch

Discharge thermo

Single, 50Hz, 230V

OUTDOOR UNIT

REFRIGERANT PIPING

A A

/min(CFM

)

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

kg(lbs) kg(lbs)

L mm(in.) mm(in.)

Power supply (phase, cycle, voltage)

Running current

Max. current External finish Refrigerant control Compressor

Model

Motor output

Starter type

Protection devices Crankcase heater

Heat exchanger Fan Fan(drive) o No.

Fan motor output

Airflow Defrost method Noise level

Dimensions

Weight Refrigerant

Charge

Oil (Model) Pipe size O.D.

Connection method Between the indoor &

outdoor unit

Mode

Cooling

Heating

D H

Liquid

Gas Indoor side Outdoor side Height difference Piping length

Service Ref.

PUHZ-P140VHA.UK

PUHZ-P140VHA

1.UK

PUHZ-P125VHA.UK

PUHZ-P125VHA1.UK

Cooling

17.37 Munsell 5Y 7/1

Linear Expansion Valve

Hermetic

Line start

—

Plate fin coil

Propeller fan o 2

0.060+0.060 100(3,530)

Reverse cycle

950(37-3/8)

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

1,350(53-1/8)

123(271)

R410A

4.5(9.9)

1.40(MEL56)

9.52(3/8)

15.88(5/8) Flared Flared

Max. 30m Max. 50m

Heating

16.74

Cooling

22.48

29.5

2.9

Heating

21.31

HP switch

Discharge thermo

Single 50Hz, 230V

OUTDOOR UNIT

REFRIGERANT PIPING

2.5

ANV33FDDMT

52 56

51 55

6 DATA

Piping length (one way)

10m

20m

30m

40m

50m

Factory

charged

2.6

4.3

2.7

4.4

3.3

4.5

3.9

5.1

4.5

5.7

2.7

4.5

Service Ref.

PUHZ-P100VHA.UK PUHZ-P100VHA

1.UK

PUHZ-P125VHA.UK PUHZ-P125VHA

1.UK

PUHZ-P140VHA.UK PUHZ-P140VHA

1.UK

U-V U-W W-V

Unit

Compressor model

Winding

Resistance

( " )

ANV33FDDMT

(at 20°C)

0.266

PUHZ-P125,140VHA.UK PUHZ-P125,140VHA1.UK

TNB220FLDM

0.88

PUHZ-P100VHA.UK PUHZ-P100VHA1.UK

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

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

6-2. COMPRESSOR TECHNICAL DATA

6-3. NOISE CRITERION CURVES

1.5m

MICROPHONE

UNIT

GROUND

63 125 250 500 1000 2000 4000 8000

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

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

BAND CENTER FREQUENCIES, Hz

PUHZ-P100VHA.UK PUHZ-P100VHA

1.UK

COOLING

MODE

HEATING

SPL(dB)

LINE

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

PUHZ-P125VHA.UK PUHZ-P125VHA

1.UK

COOLING

MODE

HEATING

SPL(dB)

LINE

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

PUHZ-P140VHA.UK PUHZ-P140VHA

1.UK

COOLING

MODE

HEATING

SPL(dB)

LINE

6-4. STANDARD OPERATION DATA

TotalElectrical circuitRefrigerant circuitIndoor side

Outdoor

side

Representative matching

SHF

Mode

Capacity Input

Phase , Hz Volts Input Amperes

Outdoor unit

Phase , Hz Volts Current Discharge pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Ref. pipe length

Intake air temperature

Discharge air temperature

Intake air temperature

V A

MPa

(Of/F)

MPa

(Of/F)

°C °C °C

°C °C °C °C °C

Indoor unit

D.B.

W.B.

D.B. D.B.

W.B.

PLA-RP100AA2 PLA-RP125AA2 PLA-RP140AA2

Cooling

9,400

3.12

Heating

11,200

3.28

Cooling

12,300

4.09

Heating

14,000

4.11

Cooling

13,600

5.21

Heating

16,000

4.98

12.26

2.84

(29.0)

0.94 (9.6)

79.3

47.9

15.4 5

27 19

13.5

35 24

0.80

0.06

12.62

2.34

(23.9)

0.61 (6.2)

68.5

40.1

-2.3 5

20 15

42.5 7 6

— —

17.37

2.68

(27.3)

0.86 (8.8)

69.5

45.6

7.7 5

27 19

12.3 35 24

0.75

0.05

16.74

2.56

(26.1)

0.66 (6.7)

70.6

43.9

-0.2 5

20 15

45.5 7 6

— —

22.48

2.79

(28.5)

0.79 (8.1)

73.7

47.2

5.0 5

27 19

11.4 35 24

0.72

0.05

21.31

2.75

(28.1)

0.64 (6.5)

86.7

46.7

-0.9 5

20 15

49.6 7 6

— —

1 , 50

230

0.18

0.92

1 , 50

230

1 , 50

230

0.18

0.92

1 , 50

230

1 , 50

230

0.18

0.92

1 , 50

230

PUHZ-P100VHA PUHZ-P125VHA PUHZ-P140VHA

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

7 OUTLINES AND DIMENSIONS

417

66 42

(19)37028

175600175

330

2-12o36 oval holes

(Foundation Bolt M10)

Air Discharge

Rear Air Intake

Side Air Intake

2-U Shaped notched holes

(Foundfation Bolt M10)

Installation Feet

,,,,

,,,

Over

Less than

Piping and wiring connections

can be made from 4 directions:

FRONT,Right,Rear and Below.

4 PIPING-WIRING DIRECTIONS

3 FOUNDATION BOLTS2 SERVICE SPACE

1 FREE SPACE (Around the unit)

Piping Knock-Out Hole Details

Example of Notes

···Refrigerant GAS pipe connction (FLARE){15.88(5/8F)

···Refrigerant LIQUID pipe connection (FLARE){ 9.52(3/8F) w1 ···Indication of STOP VALVE connection location.

r 1

r 5

The diagram below shows a

basic example.

Explantion of particular details are

given in the installation manuals etc.

r 1

r 10

FREE

Over10

500

Over100

Dimensions of space needed

for service access are

shown in the below diagram.

Service space

Please secure the unit firmly

with 4 foundation (M10) bolts.

(Bolts and washers must be

purchased locally.)

Handle for moving

Side Air Intake

Front piping cover

Rear piping cover

14522030 145

81 219

145

Drain hole

(5-{33)

Bottom piping hole

(Knock-Out)

Air Intake

Rear Air Intake

Handle for moving

943

473

950

322

w 1 447 w 1 443

670

Terminal Connections

Left···Power supply wiring

Reight···Indoor/Outdoor wiring

Earth terminal

Service panel

Handle for moving

19 55

23 27 92

4075

73 63

Right piping hole

(Knock-Out)

Right trunking hole

(Knock-Out)

Power supply wiring hole

(2-{27Knock-Out)

{

27 55

732363

Front piping hole

(Knock-Out)

Front trunking hole

(Knock-Out)

Power supply wiring hole

(2-{27Knock-Out)

{

4045

27 55 23 73 63

Rear piping hole

(Knock-Out)

Rear trunking hole

(Knock-Out)

Power supply wiring hole

(2-{27Knock-Out)

{

FOUNDATION

OUTDOOR UNIT PUHZ-P100VHA.UK PUHZ-P100VHA1.UK

Unit : mm

Less than

Over

Handle for moving

Side Air Intake

Front piping cover

Rear piping cover

Air intake

Rear Air Intake

Handle for moving

Terminal connection

Left···Power supply wiring

Right···Indoor/Outdoor wiring

Earth terminal

Service panel

Handle for moving

The diagram below shows a

basic example.

Explantion 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) bolts.

(Bolts and washers must be

purchased locally.)

Air Discharge

Rear Air Intake

Side Air Intake

···Refrigerant GAS pipe connction (FLARE){15.88(5/8F)

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

w1 ···Indication of STOP VALVE connection location.

Example of Notes

Piping Knock-Out Hole Details

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

Piping and wiring connections

can be made from 4 directions:

FRONT,Right,Rear and Below.

ver10

00m

ver 150m

ver 10m

FREE

FOUNDATION

150

500

Service space

600175 175

330

417

42 66

53 56

(19)28 370

2-U Shaped notched holes

(Foundation Bolt M10)

2-12 x 36 Oval holes

(Foundation Bolt M10)

Installation Feet

45 40

27 55

23 73 63

Rear piping hole

(Knock-Out)

Rear trunking hole

(Knock-Out)

Power supply wiring hole

(2-

{

27Knock-Out)

{

19 55

75 40

73 63 23 2792

Right piping hole

(Knock-Out)

Right trunking hole

(Knock-Out)

Power supply wiring hole

(2-

{

27Knock-Out)

{

4540

27 55

73 63

Front piping hole

(Knock-Out)

Front trunking hole

(Knock-Out)

Power supply wiring hole

(2-

{

27Knock-Out)

{

14514522030 145

81 219

Bottom piping hole

(Knock-Out)

Drain hole

(5-{33)

1350

950

1076

w 1 447

w 1 443

371 635

322

Handle for moving

PUHZ-P125VHA.UK PUHZ-P125VHA

1.UK

PUHZ-P140VHA.UK PUHZ-P140VHA

1.UK

Unit : mm

8 WIRING DIAGRAM

CY2

CY1

CY1, CY2

Capacitor

T6.3AL250V

PUHZ-P100VHA.UK PUHZ-P125VHA.UK PUHZ-P140VHA.UK

PUHZ-P100VHA1.UK PUHZ-P125VHA1.UK PUHZ-P140VHA1.UK

9 WIRING SPECIFICATIONS

1 2

S1 S2 S3

Indoor/outdoor unit connection cable

Indoor unit

Unit power supply

Outdoor unit

Remote controller

B Earth leakage breaker C wiring circuit breaker or

isolating switch

B Earth leakage breaker C wiring circuit breaker or

isolating switch

L N

1 2

Indoor unit

S2 S3

S1 S2 S3

Unit power supply

Indoor/outdoor unit connection cable

Indoor unit

Outdoor unit

Remote controller

B Earth leakage breaker C wiring circuit breaker or

isolating switch

1 2

S1 S2 S3

Indoor/outdoor connection cable

Indoor unit

Unit power supply

Indoor unit

Outdoor unit

Remote controller

L N

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

Outdoor unit model Outdoor unit power supply

Outdoor unit input capacity *1 Main switch (Breaker)

Outdoor unit power supply

)

Outdoor unit power supply earth Indoor unit-Outdoor unit *2

Wiring

Indoor unit-Outdoor unit earth *2

Wire No. o

size (mm

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

Circuit rating

Remote controller-Indoor unit *4

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV). *2. Refer to 9-3. *3. The 10 m wire is attached in the remote controller accessory. *4. The figures are NOT always against the ground.

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

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

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

3. Install an earth longer than other cables.

230V

Single phase

P100, 125V P140V

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

230 V 230 V

32 A 40 A

2 o Min. 4 2 o Min. 6 1 o Min. 4 1 o Min. 6

3 o 1.5 (Polar) 3 o 1.5 (Polar)

1 o Min. 1.5 1 o Min. 1.5

2 o 0.3 (Non-polar) 2 o 0.3 (Non-polar)

AC 230 V AC 230 V AC 230 V AC 230 V

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

A-Control

Outdoor Unit

Isolator

3 poles isolator

A-Control

Indoor Unit

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

1:1 system Synchronized twin and triple system Electrical wiring

• Synchronized twin

• Synchronized triple

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

1:1 System

* The optional indoor power supply terminal kit is required.

S1 S2

L N

1 2

L N

S1 S2 S3

1 2

L N

S1 S2 S3

1 2

L N

S1 S2 S3

JBC

GGHG

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

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 Option J

A B C D E F G H J

Indoor unit power supply

* The optional indoor power supply terminal kits are required.

Simultaneous twin/triple system

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

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

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

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

Indoor unit specifications

Required Required

Required

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

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

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

3. Install an earth longer than other cables.

Indoor unit model Indoor unit power supply Indoor unit input capacity

Main switch (Breaker)

Indoor unit power supply Indoor unit power supply earth Indoor unit-Outdoor unit

Indoor unit-Outdoor unit earth Remote controller-Indoor unit *3

Indoor unit L-N *4

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

RP35~140

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

16 A

2 o Min. 1.5 1 o Min. 1.5 2 o Min. 0.3

–

2 o 0.3 (Non-polar)

AC 230 V

– DC24 V DC12 V

Circuit

rating

Wiring

Wire No. o size

(mm

)

Electric heater (For models with heater)

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

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

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

Electric heater (For models with heater)

Indoor unit

control board

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

the units according to the wiring method.

Set the SW8-3 to ON.

;

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

JEB

S1 S2 S3

L N

S1 S2 S3

BLUE

ON OFF 1 2

(SW8)

L N

S1 S2 S3

BLUE

YELLOW

ORANGE

CND

S1 S2 S3

YELLOW

BLUE

YELLOW

BLUE

CND

ORANGE CND

9-3. INDOOR – OUTDOOR CONNECTING CABLE

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

Indoor unit-Outdoor unit

Outdoor power supply

Max. 45m

3 o 1.5 (polar)

1 o Min. 1.5

Max. 50m

3 o 2.5 (polar)

1 o Min. 2.5

Max. 80m

3 o 2.5 (polar) and S3 separated

1 o Min. 2.5

Indoor unit-Outdoor unit earth

Wire No. o Size (E)

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. (If an intermediate connection is necessary, be sure to take measures to prevent water from entering the cables.)

Indoor unit-Outdoor unit

Indoor/Outdoor separate power supply

Max. 120m

2 o Min. 0.3

—

Indoor unit-Outdoor unit earth

Wire No. o Size (E)

w The optional indoor power supply terminal kit is necessary

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

✽3 : In case of regular polarity connection (S1-S2-S3), wire size is 1.5mm

✽4 : In case of regular polarity connection (S1-S2-S3) ✽5 : Mentioned cable length is just a reference value.

It may be different depending on the condition of installation, humidity or materials, etc.

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

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

Cross section

of cable

Round

2.5

1.5

2.5

(50)

✽1

(45)

✽3

60 ✽4

Not

applicable

✽2

Flat

Round

Wire size

(mm

)

Number of wires

Clockwise : S1-S2-S3

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

Not applicable (Because center wire has no cover finish)

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

Polarity L(m) ✽5

(3C Flat cable ✕ 2)

S1 S2 S3

9-4. M-NET WIRING METHOD

Group remote 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 for transmission wire

Central remote controller

M-NET transmission wire

✕ Bad example (Multi spot grounding of shield wire)

Good example 1 (Single spot grounding of shield wire)

Power supply appliance

M-NET type outdoor unit

Central remote controller

Power supply appliance

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

Central remote controller

Power supply appliance

M-NET type outdoor unit

M-NET transmission wire

M-NET type outdoor unit

Good example 2 (Single spot grounding of shield wire)

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

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

(2) Terminal block (TB7) for transmission wires should never be connected to V power supply. If it is connected,

electronic parts on M-NET P.C. board may be burn out.

(3) Use 2-core x 1.25mm2shield 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 would be ok 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 two 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 one circuit.

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

installation manual.

M-NET Address No.

Switng setting

SW11 ones digit

SW12 tens digit

OFF

Refrigerant address

OFF

System controller

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 for transmission wire

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

System controller

Power supply unit for transmission wire

● M-NET wiring

(1) Use 2-core x 1.25mm

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 Aterminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.

(3) In the system which several outdoor units are being connected, the terminal

(A, B, S) on M-NET terminal block should be individually wired to the other

M-NET terminal block

ABS

Transmission

wire

Ground wire

Shield part

outdoor unit’s terminal, i.e. Ato A, B to B and S to S.In this case, choose one of those outdoor units and drive a screw to fix an ground wire on the plate as shown on the right figure.

9-4-1. M-NET address setting

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

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

9-4-2. Refrigerant address setting

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

9-4-3. Regulations in address settings

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

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

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

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

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8")

Refrigerant LIQUID pipe

9.52A({3/8")

4-way valve

Service port (check)

High pressure protect switch

Liner expansion valve

Muffler

Thermistor (TH4)

Refrigerant flow in cooling Refrigerant flow in heating

Ball valve

(#50)

Strainer

(#100)

Strainer (#100)

Strainer

(#100)

Stop valve

(with service port)

Strainer (#40)

Thermistor (TH3)

Capillary tube ([4.0o[3.0-L200)o2

Thermistor (TH6)

Distributor

10 REFRIGERANT SYSTEM DIAGRAM

PUHZ-P100VHA.UK PUHZ-P100VHA

Refrigerant GAS pipe

15.88A({5/8")

Refrigerant LIQUID pipe

9.52A({3/8")

1.UK

Ball valve

(#50)

Strainer

Service port (check)

Accumulator

Strainer (#40)

Stop valve (with service port)

Bypass valve

4-way valve

Muffler

Compressor

Service port (check)

Thermistor (TH4)

Refrigerant flow in cooling Refrigerant flow in heating

High pressure protect switch

Outdoor heat exchanger

(#100)

Strainer

Liner expansion valve

(#100)

Strainer

Unit : mm

Thermistor (TH6)

Thermistor (TH3)

Distributor

PUHZ-P125VHA.UK PUHZ-P125VHA1.UK PUHZ-P140VHA.UK PUHZ-P140VHA1.UK

1. Refrigerant collecting (pump down)

OFF

<SW4>

A Stop C operation B Cooling D Heating

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

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

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

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

(outdoor unit) and ventilators (indoor and outdoor units) start operating and refrigerant collecting operation begins. LED1 and LED2 on the control board of the outdoor unit are lit. wSet the SWP switch (push-button type) to ON in order to perform refrigerant collecting operation only when the unit is

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

3Because the unit automatically stops in about two to three minutes after the refrigerant collecting operation (LED1 is not lit

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

repeat step 2 three minutes later.

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

stopped until the power supply is turned off.

4Turn off the power supply (circuit breaker.)

2. Start and finish of test run

• Operation from the indoor unit

Execute the test run using the installation manual for the indoor unit.

• Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation mode (cooling/heating) can be set up.

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

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

• There may be a knocking sound around the machine room for several seconds after compressor starts operating. But this is not a problem with product because the check valve itself generates the sound 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.)

11 TROUBLESHOOTING

Unit conditions at service

Error code

Actions to be taken for service (summary)

The inferior phenomenon is reoccurring.

Displayed

Not displayed

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

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

The inferior phenomenon is not reoccurring.

Logged

Not logged

1Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor, poor connection of wiring, noise and etc. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the inferior phenomenon occurred, matters related to wiring and etc. 2Reset error code logs and restart the unit after finishing service. 3There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

1Re-check the abnormal symptom. 2Conduct trouble shooting and ascertain the cause of the

inferior phenomenon according to “11-5. Troubleshooting by inferior phenomena”. 3Continue to operate unit for the time being if the cause is not ascertained. 4There is no abnormality concerning of parts such as electrical component, controller board, remote controller and etc.

11-1. TROUBLESHOOTING

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

11-2. CHECK POINT UNDER TEST RUN

(1) Before test run

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

age, loosened connections and incorrect polarity.

• Measure impedance between the ground and the power supply terminal block(L, N) on the outdoor unit by 500V Merger and check that it is 1.0M" or over.

wDon’t use 500V Merger 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 twelve hours before test run in order to protect compressor.

• For specific models which requires higher ceiling settings or auto-recovery feature from power failure, make proper changes

of settings referring to the description of “Selection of Functions through Remote Controller”.

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

"TEST RUN" and the currently selected

LCD

Contents of inferior phenomena

P1 P2 P4 P5 P6 P8 P9 Fb

Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor/Liquid Abnormality of drain sensor Drain overflow protection is working. Freezing/overheating protection is working. Abnormality of pipe temperature Abnormality of pipe temperature thermistor/Cond./Eva Abnormality of indoor controller board

LCD

Contents of inferior phenomena

U1~UP

F3~F9 E0~E5

E6~EF

----

FFFF

Malfunction outdoor unit Malfunction

outdoor unit Remote controller transmitting error Indoor/outdoor unit communication error

No error history No applied unit

LED1

(microcomputer power supply)

LED2

(remote controller)

LED3

(indoor/outdoor communication)

Lits when power is supplied. Lits when power is supplied for wired remote controller. The indoor unit should be connected to the outdoor unit with address “0” setting.

Flash when indoor and outdoor unit are communicating.

operation mode are displayed altemately.

Displays the remaining test run time.

[TEST] button

Pipe (liquid) temperature

Operating procedures

1. Turn on the main power supply.

2. Press TEST button twice.

3. Press OPERATION SWITCH button.

4. Press AIR DIRECTION button.

5. Check the outdoor unit fan for correct running.

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

7. Register the contact number.

While the room temperature display on the remote controller is “PLEASE WAIT”, the remote controller is disabled. Wait until “PLEASE WAIT” disappears before using remote controller. “PLEASE WAIT” appears for about 2 minutes after power supply is turned on. w1

The TEST RUN appears on the screen. Cooling mode:

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

Check for correct motion of auto-vanes. The outdoor unit features automatic capacity control to

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

Check if cool air blows and water is drained.

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

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

• Check that all the indoor units are running properly in case of simultaneous twin and triple operation. Malfunctions may not be displayed regardless of incorrect wiring.

w1 After turning on the power supply, the system will go into start up mode, “PLEASE WAIT” will blink on the display section of

the room temperature, and lamp(green) of the remote controller will blink. As to INDOOR BOARD LED, LED1 will be lit up, LED2 will either be lit up in case the address is 0 or turned off in case the address is not 0. LED3 will blink. As to OUTDOOR BOARD LED, LED1(green) and LED2(red) will light up. (After the start up mode of the system finishes, LED2(red) will be turned off.) In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.

• If one of the above operations doesn’t function correctly, the causes written below should be considered. Find causes from the symptoms. The below symptoms are under test run mode. “start up” in the table means the display status of w1 written above.

Symptoms in test run mode

Remote Controller Display

Remote controller displays “PLEASE WAIT”, and

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

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

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

cannot be operated.

OUTDOOR BOARD LED Display

< > indicates digital display.

After “startup” is displayed, only green lights up. <00> After “startup” is displayed, green(once) and red(once) blink alternately. <F1>

After “startup” is displayed, green(once) and red(twice) blink alternately. <F3, F5, F9>

After “startup” is displayed, green(twice) and red(once) blink

alternately. <EA. Eb> After “startup” is displayed, only

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

green lights up. <00>

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

• Incorrect connection of outdoor terminal block (L S1, S2, S3.)

• Outdoor unit’s safeguard installation connector is open.

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

• Remote controller transmission wire short.

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

• Remote controller transmission wire open.

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

system startup. (Normal)

Cause

1, L2, L3 and

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

display.

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

MODE

COOL

HEAT

TEST RUN

FAN

VANE

TEST RUN

3,4

ON/OFF

MODE

CHECK

TEST RUN

SET

TEST RUN

FAN

VANE

LOUVER

RESET

CLOCK

TEMP

AUTO STOP

AUTO START

min

Test run [for wireless remote controller]

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

1 Turn on the main power to the unit. 2 Press the button twice continuously.

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

and current operation mode are displayed.

3 Press the ( ) button to activate mode, then

check whether cool air is blown out from the unit.

4 Press the ( ) button to activate mode, then

check whether warm air is blown out from the unit.

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

from the unit.

6 Press the button and check whether the auto vane operates

properly.

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

Note:

• Point the remote controller towards the indoor unit receiver while following steps

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

to 77.

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

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

If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display.

[CHECK] and the refrigerant address are displayed on the temperature display, and the error code and unit number are displayed alternately as shown below.

1 (If the outdoor unit is malfunctioning, the unit number will be "00".) 2 In the case of group control, for which one remote controller controls

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

3 To clear the error code, press the

ON/OFF

button.

Error code (2 or 4 digits)

(Alternating Display)

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

When using remote-/local-controller combined operation, cancel the error code after turning off remote operation. During central control by a MELANS controller, cancel the error code by pressing the

ON/OFF

button.

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

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

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

Switch to self-diagnosis mode.

Press the will change as shown below.

CHECK

button twice within three seconds. The display content

Unit number or refrigerant address to be diagnosed

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

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

[50] or [00]

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

and

[15].

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

(Alternating Display)

Error code (2 or 4 digits)

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

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

D Press the

address or refrigerant address will flash.

5 Cancel self-diagnosis.

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

H Press the

6 Press the

ON/OFF

CHECK

ON/OFF

button twice within three seconds. The self-diagnosis

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

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

of self-diagnosis.

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

11-3-3. Remote Controller Diagnosis

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

1 First, check that the power-on indicator is lit.

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

Power on indicator

2 Switch to the remote controller self-diagnosis mode.

H Press the

change as shown below.

CHECK

button for five seconds or more. The display content will

A Press the

FILTER

button to start self-diagnosis.

3 Remote controller self-diagnosis result

[When the remote controller is functioning correctly]

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

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

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

➝ Transmission is not possible.

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

The remote controller must be replaced with a new one.

(Error display 3)

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

ing circuit is defective.

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

When the number of data errors is "02": Transmission data from remote controller Transmission data on transmission path

4 To cancel remote controller diagnosis

H Press the

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

CHECK

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

11-3-4. Malfunction-diagnosis method by wireless remote controller

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

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

<Malfunction-diagnosis method at maintenance service>

[Procedure]

1. Press the CHECK button twice.

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

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

2. Press the temperature buttons.

3. Point the remote controller at the

sensor on the indoor unit and press the HOUR button.

4. Point the remote controller at the

sensor on the indoor unit and press the ON/OFF button.

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

Note: Set refrigerant address using the

outdoor unit’s DIP switch (SW1). (For more information, see the outdoor unit installation manual.)

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

• The check mode is cancelled.

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

Beeper sounds OPERATION

INDICATOR lamp blink pattern

Beep

Self-check starts (Start signal received)

Beep Beep Beep Beep Beep Beep

1st2nd3

Off

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

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

0.5 sec.

Off

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

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

1st2

· · · Repeated

[Output pattern B]

Beeper sounds OPERATION

INDICATOR lamp

blink

pattern

Beep Beep Beep Beep Beep Beep Beep

1st2nd3

Off

Self-check starts (Start signal received)

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

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

Off

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

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

1st2

· · · Repeated

[Output pattern A] Errors detected by indoor unit

Wireless remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

Wired remote controller

Symptom Remark

(Number of times)

1P1 2

P2 Pipe (TH2) sensor error

P9 Pipe (TH5) sensor error 3 E6,E7 4 P4 Drain sensor error 5 P5 Drain pump error

Intake sensor error

Indoor/outdoor unit communication error

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

6 P6 Freezing/Overheating protection operation 7 EE Communication error between indoor and outdoor units 8 P8 Pipe temperature error 9 E4, E5 Remote controller signal receiving error

– –

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

–

E0, E3

Remote controller transmission error

– E1, E2 Remote controller control board error

[Output pattern B]

Wireless remote controller

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

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

Wired remote controller

Symptom Remark

(Number of times)

1 2

3 4

6 7

8 9

10 11

12 13 14

E9 UP

U3,U4 UF

U1,Ud U5

U8 U6 U7

U9,UH

– –

Others

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

the OPERATION INDICATOR lamp does not come on,

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

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

insufficient refrigerant Abnormal high pressure (63H worked)/Overheating

protection operation Abnormal temperature of heat sink Outdoor unit fan protection stop

Compressor overcurrent interruption/Abnormal of power module Abnormality of super heat due to low discharge temperature Abnormality such as overvoltage or voltage shortage and

abnormal synchronous signal to main circuit/Current sensor error

–

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

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

there are no error records.

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

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

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

11-4. SELF-DIAGNOSIS ACTION TABLE

Error Code

None —

Meaning of error code and detection method

1 No voltage is supplied to terminal

2 Electric power is not charged

3 Electric power is not supplied to

4 Open circuit of rush current

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

Case

block(TB1) of outdoor unit.

a) Power supply breaker is

turned off.

b) Contact failure or discon-

nection of power supply terminal

c) Open phase (L or N phase)

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

outdoor controller circuit board.

a) Disconnection of connector

(CNDC)

protect resistor (RS)(VHA type)

1 Check following items.

a) Power supply breaker b) Connection of power supply terminal block

c) Connection of power supply terminal block

2 Check following items.

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

3 Check connection of the connector (CNDC)

on the outdoor controller circuit board. Check connection of the connector CNDC on the outdoor power circuit board Refer to 11-9.

4 Check resistance value of rush current

protect resistor (RS).

Judgment and action

(TB1) (TB1)

(TB1) circuit board

Disconnection of connector TABT or TABS

Refer to 11-9.

(5201)

63H connector open

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

5 Disconnection of reactor (DCL)

6 Disconnection of outdoor noise

filter circuit board or parts failure in outdoor noise filter circuit board As for VHA needed to check the resistance RS1 on the noise filter cuircuit board.

7 Defective outdoor power circuit

board

8 Defective outdoor controller

circuit board

1 Disconnection or contact failure

of 63H connector on outdoor controller circuit board

2 Disconnection or contact failure

of 63H

3 63H is working due to defective

parts.

4 Defective outdoor controller

circuit board

1 type, it is especially

5 Check connection of reactor. (DCL)

Check connection of “L1” and “L2” on the active filter module.(ACTM)

6 a) Check connection of outdoor noise filter

circuit board.

b) Replace outdoor noise filter circuit board.

Refer to 11-9.

7 Replace outdoor power circuit board. 8 Replace controller board (When items above

are checked but the units can not be repaired).

1 Check connection of 63H connector on

outdoor controller circuit board. Refer to 11-9.

2 Check the 63H side of connecting wire. 3 Check continuity by tester.

Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board.

Error Code

(6844)

(6845)

(6846)

Meaning of error code and detection method Indoor/outdoor unit connector

mis-wiring, 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 mis-wiring of indoor/outdoor unit connecting wire and etc. after power is turned on for 4 minutes.

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

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

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

Start-up time over

The unit can not finish start-up process within four minutes after power on.

1 Contact failure or mis-wiring of

2 Diameter or length of

3 4 or more indoor units are 4 Defective transmitting receiving

5 Defective transmitting receiving

6 Defective indoor power board 7 Two or more outdoor units

8 Noise has entered into power

1 Contact failure or mis-wiring of

2 Diameter or length of

4 Defective transmitting receiving

5 Defective transmitting receiving 6 Defective indoor power board

7 Two or more outdoor units

8 Noise has entered into power

1 Contact failure of indoor/ 2 Diameter or length of indoor/

7 Two or more outdoor units

8 Noise has entered into power

Case

indoor/outdoor unit connecting wire

indoor/outdoor unit connecting wire is out of specified capacity.

connected to one outdoor unit. circuit of outdoor controller

circuit board circuit of indoor controller

board

have refrigerant address “0” . (In case of group control)

supply or indoor / outdoor unit connecting wire.

indoor/outdoor unit connecting wire

indoor/outdoor unit connecting wire is out of specified capacity.

circuit of outdoor controller circuit board

circuit of indoor controller board

have refrigerant address “0” .

(In case of group control)

supply or indoor/outdoor unit connecting wire.

outdoor unit connecting wire outdoor unit connecting wire is

out of specified capacity. have refrigerant address “0” .

(In case of group control) supply or indoor/outdoor unit

connecting wire.

Judgment and action

1 Check disconnection or looseness or polarity

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

2 Check diameter and length of indoor/outdoor

unit connecting wire. Total wiring length: 80m (including wiring connecting each indoor unit and between indoor and outdoor unit) Also check if the connection order of flat cable is S1, S2, S3.

3 Check the number of indoor units that are

connected to one outdoor unit. (If EA is detected.)

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

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

7 Check if refrigerant addresses (SW1-3 to

SW1-6 on outdoor controller circuit board) are overlapping in case of group control system.

8 Check transmission path, and remove the

cause.

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

and EC.

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