Mitsubishi Electronics PUY-A36NHA2, PUY-A42NHA2-BS, PUY-A36NHA2-BS, PUZ-A18NHA2-BS, PUY-A18NHA2 User Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT -TYPE, AIR CONDITIONERS

Outdoor unit

November 2007

No.OCH429

SERVICE MANUAL

[model names]

PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2

PUZ-A42NHA2 PUZ-A18NHA2-BS

PUZ-A24NHA2-BS PUZ-A30NHA2-BS PUZ-A36NHA2-BS PUZ-A42NHA2-BS

PUY-A12NHA2 PUY-A18NHA2 PUY-A24NHA2

PUY-A30NHA2 PUY-A36NHA2 PUY-A42NHA2 PUY-A12NHA2-BS PUY-A18NHA2-BS PUY-A24NHA2-BS PUY-A30NHA2-BS PUY-A36NHA2-BS PUY-A42NHA2-BS

[Service Ref.]

PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2 PUZ-A18NHA2-BS PUZ-A24NHA2-BS PUZ-A30NHA2-BS PUZ-A36NHA2-BS PUZ-A42NHA2-BS

PUY-A12NHA2 PUY-A18NHA2 PUY-A24NHA2 PUY-A30NHA2 PUY-A36NHA2 PUY-A42NHA2 PUY-A12NHA2-BS PUY-A18NHA2-BS PUY-A24NHA2-BS PUY-A30NHA2-BS PUY-A36NHA2-BS PUY-A42NHA2-BS

R410A

NOTE:

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

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

• For servicing RoHS compliant

products, refer to the RoHS PARTS LIST.

PUZ-A24/30/36NHA2 PUY-A24/30/36NHA2

CONTENTS

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

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

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

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

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

6. OUTLINES AND DIMENSIONS····················13

7. WIRING DIAGRAM·······································16

8. WIRING SPECIFICATIONS··························20

REFRIGERANT SYSTEM DIAGRAM

10. TROUBLESHOOTING ··································28

11. EASY MAINTENANCE FUNCTION ··············85

12. FUNCTION SETTING····································88

13.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

14. DISASSEMBLY PROCEDURE ···················106

·············25

············96

PARTS CATALOG (OCB429)

1-1. INDOOR UNIT

Model name Service Ref.

Service Manual No.

PLA-A12/18/24/30/36/42BA PLA-A12/18/24/30/36/42BA1

OCH420 OCB420

PCA-A24/30/36/42GA PCA-A24/30/36/42GA2 OC368 PKA-A12/18GA PKA-A12/18GA2

OC369

PKA-A12/18GAL PKA-A12/18GAL2 PKA-A24/30/36FA PKA-A24/30/36FA2

PKA-A24/30/36FAL PKA-A24/30/36FAL2

1-2. TECHNICAL DATA BOOK Manual No. OCS13

REFERENCE MANUAL

2 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 enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of compressor.

Do not use a charging cylinder.

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

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

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

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

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

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

2-1. ALWAYS OBSERVE FOR SAFETY

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

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Gravimeter

Unit

[1] Cautions for service

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

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

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

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

[3] Service tools

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

No. Tool name Specifications

1 Gauge manifold ·Only for R410A

·Use the existing fitting

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

2 Charge hose ·Only for R410A

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

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

·Cylinder with syphon

8 Refrigerant recovery equipment

specifications

2-3. 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 [1/32]

1.0 [5/128]

—

0.8 [1/32]

1.0 [5/128]

Nominal

dimensions[inch]

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

: mm [inch]

R410A R22

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

6.35

9.52

12.70

15.88

19.05

9.1 [11/32-23/64]

13.2 [1/2-33/64]

16.6 [41/64-21/32]

19.7 [49/64-25/32] —

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions[inch]

Flare cutting dimensions

Outside

diameter

Dimension A

( )

-0.4

Unit : mm [inch]

R410A R22 1/4 3/8 1/2 5/8 3/4

6.35

9.52

12.70

15.88

19.05

17.0 [43/64]

22.0 [7/8]

26.0 [1-3/64]

29.0 [1-9/64] —

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions[inch]

Flare nut dimensions

Outside

diameter

Dimension B

Unit : mm [inch]

R410A 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, refrigerant charge and operation check 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 Refrigerant charge Check the degree of vacuum. (Vacuum valve prevents back flow of oil and refrigerant to thermistor vacuum gauge) Refrigerant charge

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

Tool exclusive for R410A Tools for other refrigerants can

be used if equipped with 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.

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 [7/256 inch] 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 is higher than that of other refrigerants. Therefore, to enhance air tightness and intensity, flare cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below. The dimension B of flare nut for R410A also has partly been changed to increase intensity as shown below. Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below. For 1/2 and 5/8 inch, the dimension B changes. Use torque wrench corresponding to each dimension.

Dimension A

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

Dimension B

3 FEATURES

PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-BS

PUZ-A42NHA2 PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS

CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max. 100ft, 30m (A42) / Max. 70ft, 20m (A12-36))

The refrigerant circuit with LEV(Linear Expansion Valve) and accumulator always control the optimal refrigerant level regardless of the length (A42: 100ft, 30m max. / A12-36: 70ft, 20m max. and 16ft, 5m min.) of piping. The additional refrigerant charging work during installation often causes problems. It is completely eliminated by chargeless system. This unique system improves the quality and reliability of the work done. It also helps to speed up the installation time.

4 SPECIFICATIONS

Service Ref. PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2 Power supply Phase Single

Cycle 60Hz

Voltage 208/230V MCA A1318252526 MOCP A 20 30 40 40 40 Breaker size A 15 25 30 30 30 External finish Munsell 3Y 7.8/1.1 Heat exchanger Plate fin coil Defrost method Reverse cycle Crankcase heater Compressor Hermetic

Model SNB130FPBM1 TNB220FLDM TNB220FLDM TNB220FLDM ANV33FDJMT

Motor output kW 0.85 1.3 1.3 1.3 2.5

R.L.A. 12 12 12 12 20

L.R.A. 14 14 17.5 17.5 27.5

Starter type Inverter Fan Fan(drive) o No. Propeller fan o 1 Propeller fan o 1 Propeller fan o 1 Propeller fan o 1 Propeller fan o 2

Fan motor output

Fan motor

Airflow m Sound level Cooling dB 46 48 48 48 51

Heating dB 47 50 50 50 55 Protection devices

Dimension W mm 800 950 950 950 950

D mm 300+23 330+30 330+30 330+30 330+30

H mm 600 943 943 943 1350

W in. 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32

D in. 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16

H in. 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32 Weight kg 45 75 75 75 118

Refrigerant R410A

Charged kg 1.7 2.7 2.7 2.7 4.5

Control Linear expansion valve

Oil Model Ester (MEL56

Charged L 0.65 0.87 0.87 0.87 1.4 Refrigerant Pipe size OD mm 6.35 9.52 9.52 9.52 9.52

piping Liquid in. 1/4 3/8 3/8 3/8 3/8

Pipe size OD mm 12.7 15.88 15.88 15.88 15.88

Gas in. 1/2 5/8 5/8 5/8 5/8

Connection method Indoor Flared

Connection method Outdoor Flared

Height difference m Max. 30

IU - OU ft Max. 100

Piping length m Max. 30 Max. 50 Max. 50 Max. 50 Max. 50

PUZ-A18NHA2-BS PUZ-A24NHA2-BS PUZ-A30NHA2-BS PUZ-A36NHA2-BS PUZ-A42NHA2-BS

F.L.A.

/min 34 55 55 55 100

CFM 1200 1940 1940 1940 3530

lbs 99 165 165 165 260

lbs 3 + 12/16 6 6 6 10

oz 20 28 28 28 45

ft Max. 100 Max. 165 Max. 165 Max. 165 Max. 165

0.040 0.075 0.075 0.075 0.086 + 0.086

0.35 0.75 0.75 0.75 0.40 + 0.40

HP switch HP switch HP switch HP switch HP switch

Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo

LP switch

)

Ether (FV50S

)

Service Ref.

PUY-A12NHA2 PUY-A18NHA2 PUY-A24NHA2 PUY-A30NHA2 PUY-A36NHA2 PUY-A42NHA2

PUY-A12NHA2-BS PUY-A18NHA2-BS PUY-A24NHA2-BS PUY-A30NHA2-BS PUY-A36NHA2-BS PUY-A42NHA2-BS

Power supply

Phase Single Cycle 60Hz

Voltage 208/230V MCA A131318252526 MOCP A 15 20 30 40 40 40 Breaker size A 15 15 25 30 30 30 External finish Munsell 3Y 7.8/1.1 Heat exchanger Plate fin coil Defrost method Crankcase heater

Compressor Hermetic

Model SNB130FPBM1 SNB130FPBM1 TNB220FLDM TNB220FLDM TNB220FLDM ANV33FDJMT

Motor output kW 0.85 0.85 1.3 1.3 1.3 2.5

R.L.A. 12 12 12 12 12 20

L.R.A. 14 14 14 17.5 17.5 27.5

Starter type Inverter Fan

Fan (drive) o No.

Propeller fan

1 Propeller fan

Fan motor output

0.040 0.040 0.075 0.075 0.075 0.086 + 0.086

Fan motor

F.L.A.

0.35 0.35 0.75 0.75 0.75 0.40 + 0.40

Airflow m

/min 34 34 55 55 55 100

CFM 1200 1200 1940 1940 1940 3530

Sound level Cooling dB 46 46 48 48 48 51

Heating dB – – – – – – Protection devices HP switch HP switch HP switch HP switch HP switch HP switch

LP switch

Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo Discharge thermo

Dimension W mm 800 800 950 950 950 950

D mm 300+23 300+23 330+30 330+30 330+30 330+30

H mm 600 600 943 943 943 1350

W in. 31-1/2 31-1/2 37-12/32 37-12/32 37-12/32 37-12/32

D in. 11-13/16 + 7/8 11-13/16 + 7/8 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16 13 + 1-3/16

H in. 23-5/8 23-5/8 37-1/8 37-1/8 37-1/8 53-5/32 Weight kg 41 44 74 74 74 117

lbs 90 97 163 163 163 258

Refrigerant R410A

Charged kg 1.3 1.7 2.7 2.7 2.7 4.5

lbs 2 +14/16 3 + 12/16 6 6 6 10 Control Linear expansion valve Oil Model Ester (MEL56

)

Charged L 0.65 0.65 0.87 0.87 0.87 1.4

Ether (FV50S

)

oz 20 20 28 28 28 45 Refrigerant Pipe size OD mm 6.35 6.35 9.52 9.52 9.52 9.52 piping Liquid in. 1/4 1/4 3/8 3/8 3/8 3/8

Pipe size OD mm 12.7 12.7 15.88 15.88 15.88 15.88 Gas in. 1/2 1/2 5/8 5/8 5/8 5/8 Connection method Indoor Flared Connection method Outdoor

Flared Height difference m Max. 30 Max. 30 Max. 30 Max. 30 Max. 30 Max. 30 IU - OU ft Max. 100 Max. 100 Max. 100 Max. 100 Max. 100 Max. 100 Piping length m Max. 30 Max. 30 Max. 50 Max. 50 Max. 50 Max. 50

ft Max. 100 Max. 100 Max. 165 Max. 165 Max. 165 Max. 165

Piping Length (one way

)

Charged

Factory

Service Ref. 50ft 60ft 70ft 80ft 90ft 100ft 110ft 120ft 130ft 140ft 150ft 160ft 165ft

15m 18m 21m 24m 27m 30m 33m 37m 40m 43m 46m 49m 50m

PUY-A12NHA2-BS

PUY-A12NHA2

42 oz 44 oz 46 oz 48 oz 50 oz 52 oz - - - - - - - 46 oz

1.2 kg 1.2 kg 1.3 kg 1.4 kg 1.4 kg 1.5 kg - - - - - - - 1.3 kg

PUY-A18NHA2-BS

PUY-A18NHA2

PUZ-A18NHA2-BS

PUZ-A18NHA2

56 oz 58 oz 60 oz 62 oz 64 oz 66 oz - - - - - - - 60 oz

1.6 kg 1.6 kg 1.7 kg 1.8 kg 1.8 kg 1.9 kg - - - - - - - 1.7 kg

PUY-A24NHA2-BS

PUY-A24NHA2

PUZ-A24NHA2-BS

PUZ-A24NHA2

84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A30NHA2-BS

PUY-A30NHA2

PUZ-A30NHA2-BS

PUZ-A30NHA2

84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A36NHA2-BS

PUY-A36NHA2

PUZ-A36NHA2-BS

PUZ-A36NHA2

84 oz 90 oz 96 oz 102 oz 108 oz 114 oz 120 oz 126 oz 132 oz 138 oz 144 oz 150 oz 156 oz 96 oz

2.4 kg 2.6 kg 2.7kg 2.9 kg 3.1 kg 3.2 kg 3.4 kg 3.6 kg 3.7 kg 3.9 kg 4.1 kg 4.3 kg 4.4 kg 2.7 kg

PUY-A42NHA2-BS

PUY-A42NHA2

PUZ-A42NHA2-BS

PUZ-A42NHA2

132 oz 136 oz 142 oz 148 oz 154 oz 160 oz 166 oz 172 oz 178 oz 184 oz 190 oz 196 oz 202 oz 160 oz

3.7 kg 3.9 kg 4.0 kg 4.2 kg 4.4 kg 4.5 kg 4.7 kg 4.9 kg 5.0 kg 5.2 kg 5.4 kg 5.6 kg 5.7 kg 4.5 kg

Longer pipe than 70 or 100 ft, additional charge is required.

PUZ-A42NHA2

Service Ref.

PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS

Compressor model SNB130FPBM1 TNB220FLDM ANV33FDJMT

(')

Winding Registance

U-V 0.320 0.880 0.266 U-W 0.320 0.880 0.266 W-V 0.320 0.880 0.266

(

at 20˚C, 68˚F

)

PUY-A12,18NHA2-BS

PUY-A12,18NHA2

PUZ-A18NHA2-BS

PUZ-A18NHA2

PUY-A24,30,36NHA2-BS

PUY-A24,30,36NHA2

PUZ-A24,30,36NHA2-BS

PUZ-A24,30,36NHA2

DATA

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

5-2. COMPRESSOR TECHNICAL DATA

5-3. NOISE CRITERION CURVES

5ft

3.3ft

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

PUY-A12/18NHA2 PUY-A12/18NHA2-BS PUZ-A18NHA2 PUZ-A18NHA2-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

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

PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-BS PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS

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

PUY-A42NHA2 PUY-A42NHA2-BS PUZ-A42NHA2 PUZ-A42NHA2-BS

COOLING

MODE

HEATING

SPL(dB)

LINE

5-4. STANDARD OPERATION DATA

5-4-1. Heat pump

Representative matching

PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42BA

Mode

COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING

Total Capacity BTU/h

18,000 19,000 24,000 26,000 30,000 32,000 34,200 37,000 42,000 45,000

Input W

2,240 2,130 2,650 2,570 4,400 3,660 5,030 3,610 4,600 4,450

Electrical circuit

Indoor unit model

PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42BA

Phase

Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V

Current

0.33A 0.43A 0.43A 0.52A 1.00A 0.94A

Outdoor unit model

PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2

Phase

Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V

Current

9.71A 9.22A 11.45A 11.09A 19.29A 15.98A 22.03A 15.66A

Refrigerant circuit

Discharge pressure MPa 3.14 3.38 2.85 3.03 2.99 3.50 3.22 2.95 Suction pressure MPa 0.81 0.64 0.86 0.69 0.72 0.65 0.76 0.60 Discharge temperature : 81.6 89.0 72.6 79.3 83.7 92.4 88.8 83.0 Condensing temperature : 52.0 51.6 46.8 49.6 49.1 55.9 51.5 48.0 Suction temperature : 4.8 -1.2 7.0 -0.3 1.2 -1.6 3.3 -2.0 Ref. Pipe length m 7.6 7.6 7.6 7.6 7.6 7.6 7.6 7.6

20.35A

2.83

0.82

73.4

47.5

4.9

7.6 410 120 164 118

21.48A

2.93

0.69

80.3

47.5

0.3

7.6 425 100 177 118

Discharge pressure PSIG 455 490 414 440 434 508 467 428 Suction pressure PSIG 118 93 125 99 104 94 110 87 Discharge temperature ˚F 179 192 163 175 183 198 192 181 Condensing temperature ˚F 126 125 116 121 120 133 125 118 Suction temperature ˚F 41 30 45 31 34 29 38 28 Ref. Pipe length ft 25 25 25 25 25 25 25 25 25 25

side

Indoor

Intake air temperature DB : 26.7 21.1 26.7 21.1 26.7 21.1 26.7 21.1 26.7 21.1 Intake air temperature WB : 19.4 15.6 19.4 15.6 19.4 15.6 19.4 15.6 19.4 15.6 Discharge air temperature DB : 12.2 45.4 13.7 40.5 12.1 45.7 13.7 40.9 12.9 41.9

side

Outdoor

Intake air temperature DB : 35 8.3 35 8.3 35 8.3 35 8.3 35 8.3 Intake air temperature WB : 23.9 6.1 23.9 6.1 23.9 6.1 23.9 6.1 23.9 6.1

side

Indoor

Intake air temperature DB ˚F 80 70 80 70 80 70 80 70 80 70 Intake air temperature WB ˚F 67 60 67 60 67 60 67 60 67 60 Discharge air temperature DB ˚F 54 114 57 105 54 114 57 106 55 107

side

Outdoor

Intake air temperature DB ˚F 95 47 95 47 95 47 95 47 95 47

Intake air temperature WB ˚F 75 43 75 43 75 43 75 43 75 43 SHF 0.70 0.78 0.70 0.77 0.71 BF 0.12

– –

– – 0.10 0.11 0.11 0.15

Representative matching

PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42BA

Mode

COOLING COOLING COOLING COOLING COOLING COOLING

Total Capacity BTU/h

12,000 18,000 24,000 30,000 34,200 42,000

Input W

1,210 2,240 2,650 4,400 5,030 4,600

Electrical circuit

Indoor unit model

PKA-A12GA PKA-A18GA PKA-A24FA PKA-A30FA PKA-A36FA PLA-A42BA

Phase

Single Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V 230V

Current

0.33A 0.33A 0.43A 0.43A 0.52A 1.00A

Outdoor unit model

PUY-A12NHA2 PUY-A18NHA2 PUY-A24NHA2 PUY-A30NHA2 PUY-A36NHA2 PUY-A42NHA2

Phase

Single Single Single Single Single Single

Cycle

60Hz 60Hz 60Hz 60Hz 60Hz 60Hz

Voltage

230V 230V 230V 230V 230V 230V

Current

5.09A 9.71A 11.45A 19.29A 22.03A 20.35A

Refrigerant circuit

Discharge pressure MPa 2.99 3.14 2.85 2.99 3.22 Suction pressure MPa 1.00 0.81 0.86 0.72 0.76 Discharge temperature : 72.8 81.6 72.6 83.7 88.8 Condensing temperature : 50.7 52.0 46.8 49.1 51.5 Suction temperature : 11.1 4.8 7.0 1.2 3.3 Ref. Pipe length m 7.6 7.6 7.6 7.6 7.6

2.83

0.82

73.4

47.5

4.9

7.6 410 120 164 118

Discharge pressure PSIG 434 455 414 434 467 Suction pressure PSIG 145 118 125 104 110 Discharge temperature F 163 179 163 183 192 Condensing temperature F 123 126 116 120 125 Suction temperature F 52 41 45 34 38 Ref. Pipe length ft 25 25 25 25 25 25

side

Indoor

Intake air temperature DB : 26.7 26.7 26.7 26.7 26.7 26.7 Intake air temperature WB : 19.4 19.4 19.4 19.4 19.4 19.4

12.9

Discharge air temperature DB : 14.8 12.2 13.7 12.1 13.7

side

Outdoor

Intake air temperature DB : 35 35 35 35 35 35 Intake air temperature WB : 23.9 23.9 23.9 23.9 23.9 23.9

side

Indoor

Intake air temperature DB ˚F 80 80 80 80 80 80 Intake air temperature WB ˚F 67 67 67 67 67 67

Discharge air temperature DB ˚F 59 54 57 54 57

side

Outdoor

Intake air temperature DB ˚F 95 95 95 95 95 95

Intake air temperature WB ˚F 75 75 75 75 75 75 SHF 0.86 0.70 0.78 0.70 0.77 0.71 BF 0.09 0.12 0.10 0.11 0.11 0.15

5-4-2. Cooling only

1/2 conduit hole

144<5-21/32>

2-ø22.2<7/8>

22<7/8>

38<1-1/2>241<9-1/2>

Min.100mm<3-15/16>

Piping and wiring connection can be made from the rear direction only.

*1 In the place where short cycle tends to occur, cooling and heating capacity and power consumption might get lowered by 10%. Air outlet guide (optional PAC-SG58SG-E) will help them improve. *2 If air is discharged to the wall, the surface might get stained.

2 sides should be open in the right, left and rear side.

Min.100mm<3-15/16> as long as no obstacle is placed on the rear and right-and-left sides of the unit

*1 *2

Air intake

Air outlet

4-oval hole

Air intake

Service panel

Connection for liquid pipe

Service panel for charge plug

Service port

Connection for gas pipe

Min.100mm<3-15/16>

Min.500mm<19-11/16>

Min.350mm<13-25/32>

Basically

open

Max.

FOUNDATION

Please secure the unit firmly with 4 foundation M10<W3/8> bolts. (Bolts, washers and nut must

be purchased locally.)

18mm<23/32>

[33<1-5/16> drain hole

43.6<1-23/32>

152<6>

155

400<15-25/32>

347.5<13-11/16>

45.4<1-25/32>

365<14-3/8>

330<13>

300<11-13/16>

40<1-9/16>

Handle

600<23-5/8>

10<3/8>

300<11-13/16>

150<5-29/32>

287.5<11-11/32>

500<19-11/16>

800<31-1/2>

69<2-23/32>

183<7-7/32>

90<3-17/32>

155<6-3/32>

23<29/32>

32.5<1-9/32>

18<23/32>

FLARE [12.7<1/2>

FLARE [6.35<1/4>

Installation bolt pitch

PIPING-WIRING DIRECTION

Minimum installation space for outdoor unit

Free space around the outdoor unit (basic example)

FOUNDATION BOLTS

OUTLINES AND DIMENSIONS

OUTDOOR UNIT Unit : mm<inch> PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS Unit : mm<inch>

,,,,

,,,,,,

,,,,,

,,,,,,

,,,,,

,,,,

,,,

,, ,

,,,

,,,,

Min. 10mm

<3/8>

Min. 10mm

<3/8>

Min. 100mm

<3-15/16>

Min. 500mm

<19-11/16>

100mm

Min.

<3-15/16>

500mm

Min.

<19-11/16>

500mm

Min.

<19-11/16>

10mm

Min.

<3/8>

Service space

,,,

,,,,

,,,

Max.

30mm<1-3/16>

FOUNDATION

31<1-7/32>

74<2-19/32>

40<1-9/16>

When installing the conduit,

set the attachment to the

inner side of each panel.

1/2 Conduit attachment

[

22.2<7/8>

330 <13>

175 <6-7/8>

600 <23-5/8>

175 <6-7/8>

53 <2-3/32>

28 <1-3/32> 370 <14-9/16>

19 <3/4>

56 <2-7/32>

45 <1-25/32>

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

417 <16-13/32>

2-U Shaped notched hole

(Foundfation Bolt M10<W3/8>)

Side Air Intake

Rear Air Intake

Air outlet

2-12o36oval hole

(Foundation Bolt M10<W3/8>)

30 <1-3/16>

Side Air Intake

Handle

Rear piping cover

Front piping cover

81<3-3/16>

219 <8-5/8>

145

<5-23/32>

220

<8-21/32>

30 <1-3/16>

145

<5-23/32>

71 <2-13/16>

145

<5-23/32>

Bottom piping hole

(Knockout)

Drain hole

(5-

[

33<1-5/16>)

Handle

Rear Air Intake

Air Intake

670 <26-3/8>

*1 443<17-7/16>

*1 447<17-19/32>

322 <12-11/16>

950 <37-13/32>

473 <18-5/8>

943 <37-1/8>

23<29/32>

Handle

Service panel

Earth terminal

Left . . . Power supply wiring

Reight . . Indoor/Outdoor wiring

Terminal Block

63<2-1/2>

73<2-7/8>

<2-31/32>

40 <1-9/16>

92<3-5/8>

27<1-1/16>23<29/32>

55<2-3/16>

19<3/4>

Conduit hole

(2-

[

27<1-1/16>Knockout)

Right trunking hole

(Knockout)

Right piping hole

(Knockout)

[

3-5/8>

45<1-25/32>

65<2-9/16>

92<3-5/8>

40 <1-9/16>

<2-1/2>

23<29/32>

73<2-7/8>

55<2-3/16>

27<1-1/16>

Conduit hole

(2-

[

27<1-1/16>Knockout)

Front trunking hole

(Knockout)

Front piping hole

(Knockout)

[92

<3-5/8>

40 <1-9/16>45<1-25/32>

63<2-1/2>

73<2-7/8>23<29/32

55<2-3/16>

27<1-1/16>

92<3-5/8>

65<2-9/16>

Conduit hole

(2-

[

27<1-1/16>Knockout)

Rear trunking hole

(Knockout)

Rear piping hole

(Knockout)

[

<3-5/8>

FREE

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

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.)

The diagram below shows a

basic example.

Explantion of particular details is

given in the installation manuals etc.

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

····Refrigerant LIQUID pipe connection (FLARE) [ 9.52(3/8) *1···· Indication of STOP VALVE connection location.

Example of Notes

Piping Knockout Hole Details

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-BS

PUZ-A42NHA2 PUZ-A42NHA2-BS Unit : mm<inch>

Terminal Block

Left ··· Power supply wiring

Right ··· Indoor/Outdoor wiring

Earth terminal

Service panel

Handle

1350<53-5/32>

23<29/32>

950<37-13/32>

1076<42-3/8>

* 1 447<17-19/32>

* 1 443<17-7/16>

371<14-19/32>

635<25>

322<12-11/16>

Handle

,,,

,,,,

,,,,,,

,,,,

,,,,,

,,,,

,,,

,,,,,

,,,,,,

,,,

,,,,,

,,,

Min. 1000mm

<39-3/8>

Min. 150mm

<5-29/32>

Min. 10mm

<3/8>

Min. 10mm

<3/8>

FREE

Max.

Min.

Handle

Side Air Intake

Front piping cover

Rear piping cover

Air intake

Rear Air Intake

Handle

Air outlet

Rear Air Intake

Side Air Intake

30mm<1-3/16>

FOUNDATION

150mm

<5-29/32>

500mm

<19-11/16>

500mm

<19-11/16>

10mm<3/8>

Service space

40<1-9/16>

74<2-19/32>

31<1-7/32>

When installing the conduit.

set the attachment to the

inner side of each panel.

[

22.2<7/8>

1/2 Conduit attachment

600<23-5/8>

175

<6-7/8>

175

<6-7/8>

330<13>

417<16-13/32>

42<1-21/32>

66<2-5/8>

53<2-3/32> 56<2-7/32>

45<1-25/32>

19<3/4>

28<1-3/32> 370<14-9/16>

2-U Shaped notched hole

(Foundation Bolt M10<W3/8>)

2-12o36 Oval hole

(Foundation Bolt M10<W3/8>)

30<1-3/16>

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>

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

[

33<1-5/16>

The diagram below shows a

basic example.

Explantion of particular details is

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.)

1 . . .Refrigerant GAS pipe connction (FLARE) [15.88(5/8)

2 . . .Refrigerant LIQUID pipe connection (FLARE) [ 9.52(3/8)

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

Piping and wiring connections

can be made from 4 directions:

front, right, rear and below.

Example of Notes

1 FREE SPACE (Around the unit)

2 SERVICE SPACE

3 FOUNDATION BOLTS

4 PIPING-WIRING DIRECTIONS

Piping Knockout Hole Details

PUY-A42NHA2 PUY-A42NHA2-BS

WIRING DIAGRAM

PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

[LEGEND]

SYMBOL TB1 MC MF1 21S4 63H TH3 TH4 TH6 TH7 TH8 LEV-A ACL CY1,CY2 P.B.

R/S U/V/W

MF1

MS 3~

Terminal Block<Power Supply, Indoor/Outdoor> Motor for Compressor Fan Motor

Solenoid Valve (Four-Way Valve)

High Pressure Switch

Thermistor<Outdoor Pipe>

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

Reactor Capacitor Power Circuit Board Connection Terminal<L1/L2-Phase> Connection Terminal<U/V/W-Phase>

C. B.

CNDC (PNK)

CNS

(WHT)

NAME SYMBOL NAME SYMBOL NAME

PFC IPM CB1~CB3

N.F.

LI/LO NI/NO EI,E2,E3 52C

C.B.

SW1 SW4

SW5 SW6 SW7 SW8

412121

TH3

TH4

(WHT)

CN2

(WHT)

63H

(YLW)

CNF1

(WHT)

TRANS

CNAC

(WHT)

TH7 TH6 TH3 TH4

t°t°t°t

TH7/6 (RED)

21 43

Converter Power Module Main Smoothing Capacitor Noise Filter Circuit Board Connection Terminal<L1-Phase> Connection Terminal<L2-Phase> Connection Terminal<Ground> 52C Relay Controller Circuit Board

Forced Defrost, Defect History

Switch< Record Reset, Refrigerant Address>

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

LEV-A

LED2

LEV-A

(WHT)

LED1

21S4

(GRN)

(WHT)

21S4

CN4

CNVMNT

(WHT)

X52

13 13

PUZ only

CNM

(WHT)

CNMNT

(WHT)

CN52C

(RED)

221

SW5SW8SW4 SWP

X51

SW6SW1

CN31

w1w1

When M-NET adapter is connected

SW7

SW9

3151

(WHT)

CNDM

CN51

(WHT)

SW9

LED1,LED2 F1~F4 SWP CN31 SS CNM CNMNT

CNVMNT

CNDM X51, X52

ABS

TB7

M-NET

Switch LED<Operation Inspection Indicators> Fuse<T6.3AL250V> Switch<Pump Down> Connector<Emergency Operation> Connector<Connection for Option> Connector<A-Control Service Inspection Kit> Connector <Connected to Optional M-NET Adapter Board> Connector <Connected to Optional M-NET Adapter Board> Connector < Connection for Option (Contact Input)> Relay

CN5

LED2 LED3 LED4

M-NET SUBSTRATE

CN2M

LED5

(WHT)

SW1

LED1

CND

(WHT)

SW11

SW12

P. B.

PFC

RED

WHT

CB1 CB2 CB3

w1 MODEL SELECT

MODEL SW6

PUZ-A18N

OFF

PUY-A12N

PUY-A18N

123456

OFF

123456

OFF

123456

w2. SW5-1 to 4 : Function switch

UVW

BLK

WHT

RED

SW5-5.6

OFF

123456

OFF

123456

OFF

123456

CY1 CY2

TB1

RED

LO NO

(RED)

CNAC2

(WHT)

CNAC1

LI EI NI

WHT

N. F.

M-NET ADAPTER

SYMBOL

TB7

52C

1 2

(BLK)

CN52C

CN5

(RED)

Terminal Block<M-net connection>

CN5

Connector<Transmission>

CND

Connector<Power Supply>

CN2M

Connector<M-NET communication>

SW1

Switch<Status of communication>

SW11

Switch<Address setting : 1st digit>

SW12

Switch<Address setting : 2nd digit>

LED1

LED<Power Supply : DC5V>

LED2

LED<Connection to Outdoor Unit>

LED3

LED<Transmission : Sending>

LED4

LED<Transmission : Recelving>

LED5

LED<Power Supply : DC12V>

NAME

ACL

IPM

CN5

(RED)

CN4

(WHT)

CN3

(WHT)

CN2

(WHT)

RED

WHT

1 2

TH8

YLW

ORN

BRN

BLU

GRN

RED

WHT

L1 L2 GR S1 S2 S3

POWER SUPPLY 208 / 230V 60Hz

INDOOR UNIT

wUse copper supply wires.

P. B.

C. B.

CNF1

(WHT)

MF1

TRANS

CNDC (PNK)

TH7/6 (RED)

63H

(YLW)

TH3

(WHT)

TH4

(WHT)

TH7 TH6 TH3 TH4

412121

t≈ t° t° t°

63H

LEV-A

(WHT)

LEV-A

LED1

LED2

CNVMNT

(WHT)

CNDM

(WHT)

CN51

(WHT)

3151

CNMNT

(WHT)

CNM

(WHT)

SW7

SW6SW1

SW9

CN31

SW5SW8SW4 SWP

X51

CNS

(WHT)

CNAC

(WHT)

21S4

(GRN)

X52

21S4

SV2

(BLU)

X55

13 13

CN4

(WHT)

CN52C

(RED)

221

CN2

(WHT)

CN5

(WHT)

LED2

SW1

SW11

SW12

LED3 LED4

TB7

LED1

LED5

2 1

CND

(WHT)

CN2M

(WHT)

M-NET SUBSTRATE

M-NET

ABS

When M-NET adapter is connected

WHT

LI EINI

LO NO

N. F.

CN5

(RED)

CNAC1

(WHT)

CNAC2

(RED)

CN52C

(BLK)

52C

RED

POWER SUPPLY 208 / 230V 60Hz

INDOOR UNIT

TB1

S1 S2 S3

RED

BLU

YLW

GRN

ORN

BRN

CY2

CY1

CB1 CB2 CB3

U V

TH8

IPM

CN3

(WHT)

CN2

(WHT)

CN4

(WHT)

CN5

(RED)

1 2

t°

WHT

RED

PFC

RED

WHT

RED

WHT

ACL

BLK

WHT

RED

UVW

PUZ only

L1 L2 GR

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M SW1 SW11

Terminal Block<M-net connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication> Switch<Status of communication>

Switch<Address setting : 1st digit> SW12 LED1 LED2 LED3 LED4 LED5

Switch<Address setting : 2nd digit>

LED<Power Supply : DC5V>

LED<Connection to Outdoor Unit>

LED<Transmission : Sending>

LED<Transmission : Recelving>

LED<Power Supply : DC12V>

TB1 MC MF1 21S4 63H

TH3 TH4 TH6 TH7 TH8 LEV-A ACL

Terminal Block<Power Supply, Indoor/Outdoor> Motor for Compressor Fan Motor

Solenoid Valve (Four-Way Valve)

High Pressure Switch

SV Solenoid Valve (Bypass Valve)

Thermistor<Outdoor Pipe>

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

Reactor

Power Circuit Board

Connection Terminal<U/V/W-Phase>

P.B.

U/V/W

Noise Filter Circuit Board Connection Terminal<L1-Phase>

Connection Terminal<Ground>

N.F.

LI/LO

Connection Terminal<L2-Phase>

NI/NO EI,E2,E3

Fuse<T6.3AL250V>

Controller Circuit Board Switch<Forced Defrost, Defect History Record Reset, Refrigerant Address> Switch<Test Operation> Switch<Function Switch>

Switch<Function Setup>

Switch<Pump Down> Connector<Emergency Operation>

F1~F4

SW1 SW4

SW5 SW7

Switch<Function Setup>

SW8

SWP CN31

CNM

CNVMNT

CNDM

LED1,LED2

LED<Operation Inspection Indicators>

Connector<A-Control Service Inspection Kit>

Connector <Connected to Optional M-NET Adapter Board>

Connector < Connection for Option (Contact Input)>

C.B.

Converter

PFC

52C Relay

52C

SYMBOL

[LEGEND]

NAME SYMBOL NAME SYMBOL NAME

Connection Terminal<L1/L2-Phase>

R/S

CNMNT

Connector <Connected to Optional M-NET Adapter Board>

Switch<Model Select>

SW6

Switch

SW9

X51,X52,X55

Relay

Power Module

IPM

Main Smoothing Capacitor

CB1~CB3

CY1,CY2

Capacitor

123456

OFF

PUZ-A24N

MODEL SW6

w1 MODEL SELECT

SW5-5.6

123456

OFF

PUY-A24N

7878123456

OFF

123456

OFF

w2. SW5-1 to 4 : Function switch

Connector<Connection for Option>

wUse copper supply wires.

PUZ-A24NHA2 PUZ-A24NHA2-BS PUY-A24NHA2 PUY-A24NHA2-BS

SYMBOL

M-NET ADAPTER

NAME

TB7 CN5 CND CN2M SW1 SW11 SW12 LED1 LED2 LED3 LED4 LED5

Terminal Block<M-net connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication> Switch<Status of communication> Switch<Address setting : 1st digit> Switch<Address setting : 2nd digit> LED<Power Supply : DC5V> LED<Connection to Outdoor Unit> LED<Transmission : Sending> LED<Transmission : Recelving> LED<Power Supply : DC12V>

TB1 MC MF1 21S4

63H TH3 TH4 TH6 TH7 TH8 LEV-A DCL

52C

Terminal Block<Power Supply, Indoor/Outdoor > Motor for Compressor Fan Motor

Solenoid Valve (Four-Way Valve)

High Pressure Switch

SV Solenoid Valve (Bypass Valve)

Thermistor<Outdoor Pipe>

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

Reactor

52C Relay

ACTM

Active Filter Module

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

Diode Bridge

P.B.

TABU/V/W

Noise Filter Circuit Board Connection Lead<L1-Phase>

Connection Terminal<Ground>

N.F.

LI/LO

Connection Lead<L2-Phase>

NI/NO EI, E2

Controller Circuit Board

Switch<Pump Down> Connector<Emergency Operation>

Switch<Function Setup>

SW8 SWP

CN31

C.B.

DS2, DS3

Power Module

IPM

SYMBOL

[LEGEND]

NAME SYMBOL NAME SYMBOL NAME

Connection Terminal<L1/L2-Phase> Connection Terminal<DC Voltage>

TABS/T TABP1/P2

Connection Terminal<DC Voltage>

TABN1/N2

Switch

SW9

Fuse<T6.3AL250V> Switch<

Forced Defrost, Defect History Record

Reset, Refrigerant Address>

Switch<Model Select>

F1~F4 SW1

SW6

Switch<Function Setup>

SW7

LED1,LED2

LED<Operation Inspection Indicators>

CNM CNMNT CNVMNT CNDM

Connector<A-Control Service Inspection Kit> Connector<Connected to Optional M-NET Adapter Board> Connector<Connected to Optional M-NET Adapter Board> Connector< Connection for Option (Contact Input)>

X51,X52,X55

Relay

CY1, CY2

Capacitor

Switch<Test Operation> Switch<Function Switch>

SW4 SW5

123456

OFF

PUZ-A30N

PUZ-A36N

MODEL SW6

1 MODEL SELECT

SW5-5.6

123456

OFF

123456

OFF

PUY-A30N

PUY-A36N

123456

OFF

123456

OFF

123456

OFF

123456

OFF

123456

OFF

2. SW5-1 to 4 : Function switch

Connector<Connection for Option>

Use copper supply wires.

C. B.

CNF1

(WHT)

MF1

MS 3~

TRANS

CNDC (PNK)

TH7/6 (RED)

63H

(YLW)

TH3

(WHT)

TH4

(WHT)

TH7TH6 TH3 TH4

412121

t°t°t°t

63H

LEV-A

(WHT)

LEV-A

LED1

LED2

CNVMNT

(WHT)

CNDM

(WHT)

CN51

(WHT)

WHT

3151

CNMNT

(WHT)

CNM

(WHT)

SW7

SW6SW1

SW9

CN31

w1w1

SW5SW8SW4SWP

X51

CNS

(WHT)

CNAC (WHT)

(WHT)

21S4 (GRN)

X52

21S4

SV2

(BLU)

X55

13 13

CN4

(WHT)

CN52C

(RED)

221

CN2

(WHT)

CN5

(WHT)

LED2

SW1

SW11

SW12

LED3 LED4

TB7

LED1

LED5

2 1

CND

(WHT)

CN2M

(WHT)

M-NET SUBSTRATE

M-NET

ABS

When M-NET adapter is connected

PUZ only

P. B .

1 3

1 2 1 2 1 2

2 2

CNDC

(PNK)

DS2

DS3

TABN

TABP

IPM

TABP2

TABV

TABW

TABN2

TABN1

TABS

TABP1

TABT

TABU

UVW

CN2

(WHT)

1 CNAF

(WHT)

CN4

(WHT)

CN5

(RED)

CN3

(WHT)

TH8

DCL

ACTM

52C

LI NI

CN5

(RED)

CNAC2

(RED)

CN52C

(BLK)

CNAC1

(WHT)

1 2

N. F.

POWER SUPPLY 208 / 230V 60Hz

INDOOR UNIT

TB1

S1 S2 S3

RED

BLU

BLK

GRN

ORN

YLW

BRN

L1 L2 GR

WHT

REDRED

RED

BLU

WHT

RED

BLK

CY2

CY1

PUZ-A30/36NHA2 PUZ-A30/36NHA2-BS PUY-A30/36NHA2 PUY-A30/36NHA2-BS

TB1 MC MF1,MF2 21S4 63H 63L TH3 TH4 TH6 TH7 TH8 LEV-A DCL

Terminal Block<Power Supply, Indoor/Outdoor > Motor for Compressor Fan Motor

Solenoid Valve (Four-Way Valve)

High Pressure Switch Low Pressure Switch

Thermistor<Outdoor Pipe>

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

Reactor

ACTM

Active Filter Module

Main Smoothing Capacitor

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

Diode Bridge

P.B.

TABU/V/W

Noise Filter Circuit Board Connection Lead<L1-Phase>

Connection Terminal<Ground>

N.F.

LI/LO

Connection Lead<L2-Phase>

NI/NO

52C Relay

52C

EI, E2

Controller Circuit Board

Switch<Pump Down> Connector<Emergency Operation>

SWP CN31

C.B.

DS2, DS3

Power Module

IPM

SYMBOL

[LEGEND]

NAME SYMBOL NAME SYMBOL NAME

Connection Terminal<L1/L2-Phase>

TABS/T

Connection Terminal<DC Voltage>

TABP1/P2/P

Connection Terminal<DC Voltage>

TABN1/N2/N

Switch<Function Setup>

SW8

Switch

SW9

Fuse<

T6.3AL250V>

Switch<

Forced Defrost, Defect History Record

Reset, Refrigerant Address>

Switch<Function Switch> Switch<Model Select>

F1~F4 SW1

SW5

SW6

Switch<Function Setup>

SW7

LED1,LED2

LED<Operation Inspection Indicators>

CNM CNMNT CNVMNT CNDM

Connector<A-Control Service Inspection Kit> Connector<Connected to Optional M-NET Adapter Board> Connector<Connected to Optional M-NET Adapter Board> Connector< Connection for Option (Contact Input)>

X51,X52,X55

Relay

SYMBOL

M-NET ADAPTER

NAME TB7 CN5 CND CN2M SW1 SW11 SW12 LED1 LED2 LED3 LED4 LED5

wUse copper supply wires.

CY1, CY2 Capacitor

Switch<Test Operation>

SW4

123456

OFF

PUZ-A42N

MODEL SW6

w1 MODEL SELECT

SW5-5.6

123456

OFF

PUY-A42N

7878123456

OFF

123456

OFF

w2. SW5-1 to 4 : Function switch

Connector<Connection for Option>

C. B.

CNF1 (WHT)

MF1

MS 3~

CNF2 (WHT)

MF2

MS 3~

TRANS

CNDC (PNK)

TH7/6 (RED)

63L

(RED)

TH3

(WHT)

TH4

(WHT)

TH7TH6 TH3 TH4

412121

t° t° t° t°

63L

63H

(YLW)

63H

LEV-A (WHT)

LEV-A

LED1

LED2

CNVMNT

(WHT)

CNDM

(WHT)

CN51

(WHT)

WHT

3151

CNMNT

(WHT)

CNM

(WHT)

SW7

SW6SW1

SW9

CN31

w1w1

SW5SW8SW4SWP

X51

CNS

(WHT)

CNAC

(WHT)

21S4

(GRN)

X52

F3 21 43

21S4

SV2

(BLU)

X55

13 13

CN4

(WHT)

CN52C

(RED)

221

CN2

(WHT)

CN5

(WHT)

LED2

SW1

SW11

SW12

LED3 LED4

TB7

LED1

LED5

2 1

CND

(WHT)

CN2M

(WHT)

M-NET SUBSTRATE

M-NET

ABS

When M-NET adapter is connected

w2 PUZ only

P. B.

1 3

1 2

1 2 1 2

2 2

CNDC (PNK)

DS2

DS3

TABN TABP

IPM

TABP2

TABV

TABW

TABN2

TABN1

TABS

TABP1

TABT

TABU

M 3~

UVW

CN2

(WHT)

CNAF (WHT)

CN4

(WHT)

CN5

(RED)

CN3

(WHT)

TH8 t

DCL

ACTM

52C

LI NI

CN5

(RED)

CNAC2

(RED)

CN52C

(BLK)

CNAC1

(WHT)

1 2

N. F.

POWER SUPPLY 208 / 230V 60Hz

INDOOR UNIT

TB1

S1 S2 S3

RED

BLU

BLK

GRN

ORN

YLW

BRN

L1 L2 GR

WHT

REDRED

RED

BLU

WHT

RED

BLK

RED

WHT

CY2

CY1

PUZ-A42NHA2 PUZ-A42NHA2-BS PUY-A42NHA2 PUY-A42NHA2-BS

8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT (A-control application)

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 Wiring circuit breaker or isolating switch C Outdoor unit D Indoor unit/outdoor unit connecting cords E Remote controller F Indoor unit G Indoor unit earth

L1 L2

1 2

S1 S2 S3

S1 S2

L1 L2

1 2

S1 S2 S3

1 2

S1 S2 S3

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 po wer 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-A12, 18, 24, 30

PCA, PKA

PLA-A36, 42

1A 2A

15A 15A

––

ACB

FFF

GG G

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

*1. Max. 50 m, 165 ft *2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 1500 ft *3. 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.

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 *1 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

A12 A18 A24 A30 A36 A42

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

15A 15A 25A 30A 30A 30A 13A 13A 18A 25A 25A 26A

15A 20A 30A 40A 40A 40A 2 o Min. AWG 14 2 o Min. AWG 14 2 o Min. AWG 12 2 o Min. AWG 10 2 o Min. AWG 10 2 o Min. AWG 10 1 o Min. AWG 14 1 o Min. AWG 14 1 o Min. AWG 12 1 o Min. AWG 10 1 o Min. AWG 10 1 o Min. AWG 10

3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar) 3 o AWG 16 (polar)

1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16 1 o Min. AWG 16

2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar) 2 o AWG 22 (Non-polar)

AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V AC 208/230 V

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

Wiring

Wire No. o

size

Circuit

rating

A-Control

Outdoor Unit

3 poles isolator

230V

Single phase

Isolator

A-Control

Indoor Unit

WIRING SPECIFICATIONS

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

L1 L2

1 2

L1 L2

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

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. Max. 50 m, 165 ft *2. The 10 m, 30 ft wire is attached in the remote controller accessory. Max. 500 m, 1500 ft *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 300V 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-A12, 18, 24, 30

PKA, PCA

PLA-A36, 42

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)

AC 208/230 V AC 208/230 V

DC24 V DC24 V DC12 V DC12 V

Circuit

rating

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

* 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 S1

S2 S3

1 2

L1 L2

S1 S2 S3

L1 L2 GR

BLUE

YELLOW

CND/CN01

S1 S2 S3

L1 L2 GR

YELLOW

BLUE

YELLOW

Wiring

Wire No.

size

––

A B C D E F G

Option

A B C D E F G

CND/CN01

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)

ON OFF 1 2

(SW8)

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, 147ft

3 o AWG15(polar)

Max. 50m, 164ft

3 o AWG13(polar)

Max. 80m, 262ft

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. 120m, 393ft

2 o Min. AWG22

Wire No. o Size

w The optional indoor power supply terminal kit is necessary.

8-3. INDOOR - OUTDOOR CONNECTING CABLE

8-4. 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 208/230V power supply. If it is connected,

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

(3) Use 2-core x 1.25mm2[AWG16] 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 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.

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 one circuit.

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

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

M-NET Address No.

Switching

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

[AWG16] 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.

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

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.

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

“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”.

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8)

Refrigerant LIQUID pipe

9.52A({3/8) Stop valve (with service port)

4-way valve

Service port (check)

High pressure protect switch

Refrigerant flow in cooling Refrigerant flow in heating

Linear expansion valve

Thermistor (TH4)

Muffler

Ball valve

Bypass valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

Accumulator

Stop valve (with service port)

Compressor

Refrigerant GAS pipe

12.7A({1/2)

Refrigerant LIQUID pipe

6.35A({1/4) Stop valve

4-way valve

Service port(check)

High pressure protect switch

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Muffler

Thermistor(TH4)

Linear expansion valve

Refrigerant flow in cooling Refrigerant flow in heating

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

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

Linear expansion valve

Muffler

Thermistor (TH4)

Refrigerant flow in cooling Refrigerant flow in heating

Ball valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

(#100)

Low pressure protect switch

Stop valve

(with service port)

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

REFRIGERANT SYSTEM DIAGRAM

PUZ-A18NHA2 PUZ-A18NHA2-BS

PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS

Unit : mm(inch)

<4-way valve solenoid coil>

Heating : ON Cooling : OFF

PUZ-A42NHA2 PUZ-A42NHA2-BS

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8)

Refrigerant LIQUID pipe

9.52A({3/8)

Stop valve (with service port)

Service port (check)

High pressure protect switch

Refrigerant flow in cooling

Linear expansion valve

Thermistor (TH4)

Ball valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

Bypass valve

PUY-A12/18NHA2 PUY-A12/18NHA2-BS

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

Service port (Check)

Accumulator

Compressor

Refrigerant GAS pipe

12.7A({1/2)

Refrigerant LIQUID pipe

6.35A({1/4) Stop valve

High pressure protect switch

Thermistor (TH4)

Linear expansion valve

Refrigerant flow in cooling

Stop valve (with service port)

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

Service port (check)

Accumulator

Compressor

Refrigerant GAS pipe

15.88A({5/8)

Refrigerant LIQUID pipe

9.52A({3/8)

Service port (check)

High pressure protect switch

Thermistor (TH4)

Refrigerant flow in cooling

Stop valve (with service port)

Linear expansion valve

Ball valve

(#50)

Strainer

(#100)

Strainer

(#100)

Strainer

(#100)

Low pressure protect switch

Outdoor heat exchanger

Thermistor (TH3)

Thermistor (TH6)

Distributor

PUY-A24/30/36NHA2 PUY-A24/30/36NHA2-BS

Unit : mm(inch)

PUY-A42NHA2 PUY-A42NHA2-BS

OFF

<SW4>

A Stop C operation B Cooling D Heating

(PUZ only)

1. Refrigerant recovering (pump down)

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

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

TRALLY 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 recovering 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 recovering operation only when the unit is

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

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

LED2 is lit), be sure to quickly close the gas stop valve.

wIn case the outdoor unit is stopped when LED1 is lit and LED2 is not lit, open the liquid stop valve completely, and then

repeat step 2 3 minutes later.

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

stopped until the power supply is turned off.

4Turn off the power supply (circuit breaker.)

2. Start and finish of test run

• Operation from the indoor unit

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

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

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

• There may be a faint knocking sound around the machine room after power is supplied, but this is no problem with product because the linear expansion valve 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.)

10 TROUBLESHOOTING

Unit conditions at service

Error code

Actions to be taken for service (summary)

The trouble is reoccurring.

Displayed

Not displayed

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

Conduct 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

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

trouble 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

trouble

according to “10-5. 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.

10-1. TROUBLESHOOTING

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

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 500V Megger and check that it is 1.0M" or over.

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

(1, 2). This may cause malfunction.

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

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

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

of settings referring to the description of “12. FUNCTION SETTING”.

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

[TEST] button

Pipe (liquid) temperature

Displays the remaining test run time.

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

°F

Operating procedures

LCD

Contents of inferior phenomena

P1 P2 P4 P5 P6 P8 P9

Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor/Liquid Abnormality of drain sensor/Float switch connector open Drain overflow protection is 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 Forced compressor stop(due to water leakage abnormality)

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.

Blinks when indoor and outdoor unit are communicating.

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.

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.

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

7. Register the contact number.

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

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

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

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

the room temperature, and lamp(green) of the remote controller will 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 be lit up. (After the startup mode of the system finishes, LED2(red) will be turned off.) In case OUTDOOR BOARD LED is digital display, — and — will be displayed alternately every second.

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

Symptoms in test run mode

Remote Controller Display

Remote controller displays “PLEASE WAIT”, and

cannot be operated.

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

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

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

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

display.

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>

Cause

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

system startup. (Normal)

• Incorrect connection of outdoor terminal block (L1, L2, and S1, S2, S3.)

• Outdoor unit’s protection device connector is open.

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

• Remote controller transmission wire is short.

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

• Remote controller transmission wire is open.

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

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

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 wireless remote controller]

MODE

COOL

HEAT

TEST RUN

FAN

VANE

TEST RUN

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 turned off status of remote controller display.)

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.

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

10-3-1. 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.

1[CHECK] and the refrigerant address are displayed on the temperature

display, and the error code and unit number are displayed alternately as shown below.

(If the outdoor unit is malfunctioning, the unit number will be "00".)

2 In the case of group control, for which 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

button.

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

button.

10-3-2. 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

button twice within 3 seconds. The display content

will change as shown below.

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

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

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

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

Error code (2 or 4 digits)

(Alternating Display)

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

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

Unit number or refrigerant address to be diagnosed

Error code (2 or 4 digits)

(Alternating Display)

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

and

[15].

ON/OFF

CHECK

D Press the

ON/OFF

button twice within 3 seconds. The self-diagnosis

address or refrigerant address will blink.

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

5 Cancel self-diagnosis.

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

H Press the

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

of self-diagnosis.

5 Press the

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

10-3-3. 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.

2 Switch to the remote controller self-diagnosis mode.

H Press the

button for 5 seconds or more. The display content will

change as shown below.

A Press the

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.

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

ing circuit is defective.

The remote controller must be replaced with a new one.

[Where the remote controller is not defective, but cannot be operated.]

(Error display 2) [E3], [6833] or [6832] blinks.

➝ Transmission is not possible.

There might be noise or interference on the transmission path, or the indoor unit

or other remote controllers are defective. Check the transmission path and other

controllers.

(Error display 3)

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

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

4 To cancel remote controller diagnosis

H Press the

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

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

Power on indicator

CHECK

ON/OFF

CHECK

FILTER

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

CHECK

10-3-4. 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" blinks.

• 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 lamp blinks, and the error code is output. (It takes 3 seconds at most for error code to appear.)

• The check mode is cancelled.

[Output pattern A] Errors detected by indoor unit

[Output pattern B]

*1If 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.

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

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

OPERATION INDICATOR lamp blink pattern

Beep Beep Beep Beep Beep Beep Beep

Off

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

Off

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

· · · Repeated

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

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

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

[Output pattern B]

OPERATION INDICATOR lamp blink pattern

Beep

Beep Beep Beep Beep Beep Beep

Off

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

0.5 sec.

Off

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

· · · Repeated

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

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

1st2nd3

1st2

Self-check starts (Start signal received)

Beeper sounds

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

Beeper sounds/OPERATION

INDICATOR lamp blinks Check code

(Number of times)

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)

5 Abnormal high discharging temperature/ insufficient refrigerant 6

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

Abnormal temperature of heatsink

Outdoor unit fan protection stop

Compressor overcurrent interruption/Abnormal of power module

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

12 13

UP U3,U4 UF

U1,Ud

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)

Wireless remote controller

Wired remote controller

1P1

Intake sensor error

Pipe (TH5) sensor error

Pipe (TH2) sensor error

3 E6,E7

Indoor/outdoor unit communication error

4P4

Drain sensor error / Float switch connector open

P5 PA

Drain pump error Forced compressor stop(due to water leakage abnormality)

6P6

Freezing/ Overheating protection operation

7EE

Communication error between indoor and outdoor units

8P8

Pipe temperature error

9 E4, E5

Remote controller signal receiving error

–

– –

12 Fb

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

–

E0, E3

– E1, E2

Remote controller control board error

Remote controller transmission error

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

10-4. SELF-DIAGNOSIS ACTION TABLE

Error Code

None —

Abnormal point and detection method

1 No voltage is supplied to terminal

block(TB1) of outdoor unit.

a) Power supply breaker is b) Contact failure or discon-

c) Open phase (L1 or L2

2 Electric power is not charged

to power supply terminal of outdoor power circuit board.

a) Contact failure of power b) Open phase on the outdoor

3 Electric power is not supplied to

outdoor controller circuit board.

a) Disconnection of connector

4 Disconnection of reactor (DCL

or ACL)

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

Case

turned off. nection of power supply

terminal phase)

supply terminal power circuit board

A12-A24N :Disconnection of connector R or S A30-A42N :Disconnection of connector TABT or TABS

(CNDC)

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 A12-A24N: Disconnection of connector R or S A30-A42N: Disconnection of connector TABT

3 Check connection of the connector (CNDC)

on the outdoor controller circuit board. Check connection of the connector, LD1 and LD2 for A12-A24N and CNDC for A30-A36N, on the outdoor power circuit board. Refer to 10-9.

4 Check connection of reactor. (DCL or ACL)

A12-A24N: Check connection of “LO” and “NO” on the outdoor noise filter circuit board. Check connection of “R” and “S” on the outdoor power circuit board. A30-A42N: Check connection of “L1” and “L2” on the active filter module.(ACTM) Refer to 10-9.

Judgment and action

(TB1) (TB1)

(TB1) circuit board

Refer to 10-9. or TABS Refer to 10-9.

(5202)

63L connector open

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

5 Disconnection of outdoor noise

filter circuit board or parts failure in outdoor noise filter circuit board As for A30-A42N type, it is especially needed to check the resistance RS1 on the noise fiter circuit board.

6 Defective outdoor power circuit

board

7 Defective outdoor controller

circuit board

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

5 a) Check connection of outdoor noise filter

circuit board.

b) Replace outdoor noise filter circuit board.

Refer to 10-9.

6 Replace outdoor power circuit board.

7 Replace controller board (When items above

are checked but the units cannot be repaired).

1 Check connection of 63L connector on

outdoor controller circuit board. Refer to 10-9.

2 Check the 63L side of connecting wire. 3 Check refrigerant pressure.

Charge additional refrigerant. Check continuity by tester. Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board.

Error Code

(5201)

Abnormal point and detection method

63H connector open

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

Case

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

Judgment and action

1 Check connection of 63H connector on

outdoor controller circuit board. Refer to 10-9.

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

Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board.

(4119)

(6844)

(6845)

(6846)

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

Indoor/outdoor unit connector miswiring, excessive number of units

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

2. Abnormal if outdoor controller circuit board recognizes excessive number of indoor units.

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.

Start-up time over

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

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 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.

1 Contact failure or miswiring of

indoor/outdoor unit connecting wire

2 Diameter or length of

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

4 Defective transmitting receiving

circuit of outdoor controller circuit board

5 Defective transmitting receiving

circuit of indoor controller board

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

refrigerant address “0” .

(In case of group control)

8 Noise has entered into power

supply or indoor/outdoor unit connecting wire.

1 Contact failure of indoor/

outdoor unit connecting wire

2 Diameter or length of indoor/

outdoor unit connecting wire is out of specified capacity.

7 2 or more outdoor units have

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

8 Noise has entered into power

supply or indoor/outdoor unit connecting wire.

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

outdoor controller circuit board. Refer to 10-9.

2 Check the 63H and 63L side of connecting

wire.

3 Check continuity by tester.

Replace the parts if the parts are defective.

4 Replace outdoor controller circuit board.

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[262ft] (including wiring connecting each indoor unit and between indoor and outdoor unit) Also check if the connection order of flat cable is S1, S2, S3.

3 Check the number of indoor units that are

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

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

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

7 Check if refrigerant addresses (SW1-3 to

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

8 Check transmission path, and remove the

cause.

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

and EC.

Error Code

(1302)

(1102)

Abnormal point and detection method

High pressure (High-pressure switch 63H worked)

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

63H: High-pressure switch

High discharging temperature

(1) Abnormal if discharge temperature ther-

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

(2) Abnormal if discharge superheat

(Cooling: TH4 – TH5 / Heating: TH4 – TH6) increases. All the conditions in Aor B are detected simultaneously for 10 minutes continuously after 6 minutes past from compressor start-up (including the thermostat indication or recovery from defrosting).

• Heating mode

• When discharge superheat is less than 70 deg [126˚F].

• When the TH6 temp is more than the value obtained by TH7 – 5 deg [9˚F].

• When the condensing temp of TH5 is less than 35: [95˚F].

Case

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

dirt of indoor fan

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

valve (Not 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 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

Judgment and action

1~6Check indoor unit and repair the defect.

7 Check if stop valve is fully open. 8 Check piping and repair the defect.

9~2 Check outdoor unit and repair the defect.

3 Check the inspected temperature of outside

temperature thermistor on LED display. (SW2 on A-Control Service Tool : Refer to 10-

10.)

4~6Turn 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, 7.

8 Replace outdoor controller board.

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 “Judgement and action” for U3.

5 Check linear expansion valve.

Refer to 10-6, 7.

• During comp operation (Cooling and

Heating)

• When discharge superheat is less

than 80 deg [144˚F] in cooling

• When discharge super heat is less

than 90 deg [162˚F] in heating

• When condensing temp of TH6 is

more than –40: [–40˚F] (In cooling only)

Error Code

(5104)

Abnormal point and detection method

Open/short circuit of discharge temperature thermistor (TH4)

Abnormal if open (3: [37˚F] or less) or short (217: [422˚F] 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.)

Case

1 Disconnection or contact

failure of connector (TH4) on the outdoor controller circuit board

2 Defective thermistor 3 Defective outdoor controller

circuit board

Judgment and action

1 Check connection of connector (TH4) on the

outdoor controller circuit board. Check breaking of the lead wire for thermistor (TH4). Refer to 10-9.

2 Check resistance value of thermistor (TH4) or

temperature by microcomputer. (Thermistor/TH4: Refer to 10-6.) (SW2 on A-Control Service Tool: Refer to 10-

10.)

3 Replace outdoor controller board.

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

(4230)

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

Abnormal if open or short is detected during compressor operation. Open detection of thermistors TH3 and TH6 is inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting. WCheck which unit has abnormality in its

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

Symbol Name

TH3 TH6 TH7 TH8

Temperature of heatsink

Abnormal if heat sink thermistor(TH8) detects temperature indicated below. A12, 18, 42N··············84:, 183˚F A24, 30, 36N··············81:, 177˚F

Thermistors

Thermistor <Outdoor pipe>

Thermistor <Outdoor 2-phase pipe>

Thermistor <Outdoor>

Thermistor <Heatsink>

1 Disconnection or contact failure

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

(

CN3

2 Defective thermistor 3 Defective outdoor controller

circuit board

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

outdoor power circuit board

7 Failure of outdoor fan drive

circuit

)

– 40:[-40˚F] or below – 40:[-40˚F] or below – 40:[-40˚F] or below – 27:[-17˚F] or below

1 Check connection of connector (TH3,TH6/TH7)

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,TH6,TH7,TH8). Refer to 10-9.

2 Check resistance value of thermistor

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

10.) 3 Replace outdoor controller circuit board. WEmergency operation is available in case of

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

Open detection Short detection

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

102:[216˚F] or above

12 Check outdoor fan.

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

temperature rise around outdoor unit. (Upper limit of ambient temperature is 46:

[114˚F].) 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.) (SW2 on A-Control Service Tool: Refer to 10-

10.)

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

(4250)

Power module

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

1 Outdoor stop valve is closed. 2 Decrease of power supply voltage 3 Looseness, disconnection or

converse of compressor wiring connection

4 Defective compressor 5 Defective outdoor power circuit

board

1 Open stop valve. 2 Check facility of power supply. 3 Correct the wiring (U·V·W phase) to

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

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

Error Code

(4400)

Abnormal point and detection method

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 abnormal if;

• 100 rpm or below detected continuously for 15 seconds at 20:[68˚F] or more outside air temperature

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

Case

1 Failure in the operation of

the DC fan motor

2 Failure in the outdoor circuit

controller board

Judgment and action

1 Check or replace the DC fan motor. 2 Check the voltage of the outdoor circuit

controller board during operation.

3 Replace the outdoor circuit controller

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

(4220)

Overvoltage or voltage shortage and synchronous signal to main circuit

Abnormal if any of followings are detected during compressor operation;

• Decrease of DC bus voltage to 310V

• Instantaneous decrease of DC bus voltage to 200V

• Increase of DC bus voltage to A12, 18, 24N : 420V A30, 36, 42N : 400V

• Decrease of input current of outdoor unit to 0.5A only if operation frequency is more than or equal to 40Hz or compressor current is more than or equal to 5A.

• Abnormal power synchronous (zero cross) signal

• PFC error (overcurrent) when the current peak of input current increase A12, 18, 24N: 47A (peak)

1 Decrease of power supply volt-

age

2 Disconnection of compressor

wiring

3 Disconnection or loose con-

nection of CN52C

4 Defective PFC module of out-

door power board (A12, 18, 24N only)

5 Defective ACT module (A30,

36, 42N only)

6 Defective ACT module drive

circuit of outdoor power circuit board (A30, 36, 42N only)

7 Disconnection or loose con-

nection of CNAF (A30, 36, 42N only)

8 Defective 52C drive circuit of

outdoor noise filter circuit board

9 Disconnection or loose

connection of CN5 on the outdoor power circuit board

0 Disconnection or loose

connection of CN2 on the outdoor power circuit board

1 Check the facility of power supply. 2 Correct the wiring (U·V·W phase) to com-

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

3 Check CN52C wiring. 4 Replace outdoor power circuit board.

(A12, 18, 24N only)

5 Replace ACT module. (A30, 36, 42N only) 6 Replace outdoor power circuit board.

(A30, 36, 42N only)

7 Check CNAF wiring. (A30, 36, 42N only)

8 Replace outdoor noise filter circuit board.

9 Check CN5 wiring on the outdoor power

circuit board. Refer to 10-9.

0 Check CN2 wiring on the outdoor power

circuit board. Refer to 10-9.

(4100)

(5300)

Compressor overcurrent interruption (When compressor locked)

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

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.)

w This error is ignored in case of test run

mode.

• It’s abnormal for 38A the input current or 10 seconds continuous 34A or more.

1 Stop valve is closed. 2 Decrease of power supply

voltage

3 Looseness, disconnection or

converse of compressor wiring connection

4 Defective compressor 5 Defective outdoor power board

1 Disconnection of compressor

wiring

2 Defective circuit of current

sensor on outdoor power circuit board

3 Decrease of power supply

voltage

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

3 Correct the wiring (U·V·W phase) to

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

4 Check compressor.

Refer to 10-6.

5 Replace outdoor power circuit board.

1 Correct the wiring (U·V·W phase) to

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

2 Replace outdoor power circuit board.

3 Check the facility of power supply.

Error Code

(1300)

Abnormal point and detection method

Low pressure (63L worked)

Abnormal if 63L is worked (under-

0.03MPa) during compressor operation. 63L: Low-pressure switch

(A42N only)

Case

1 Stop valve of outdoor unit is

closed during operation.

2 Disconnection or loose connection

of connector (63L) on outdoor controller board

3 Disconnection or loose

connection of 63L

4 Defective outdoor controller board 5 Leakage or shortage of refrigerant 6 Malfunction of linear expansion

valve

Judgment and action

1 Check stop valve. 2~4 Turn the power off and on again to check

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

direction.

5 Correct to proper amount of refrigerant. 6 Check linear expansion valve.

Refer to 10-6.

(4210)

Compressor overcurrent interruption

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

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

1 Abnormal if main or sub remote con-

troller cannot receive normally any transmission from indoor unit of refrigerant address “0” for 3 minutes. (Error code : E0)

2 Abnormal if sub-remote controller could

not receive for any signal for 2 minutes. (Error 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. (Error code: E4)

2 Indoor controller board cannot receive

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

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 Contact failure at transmission

wire of remote controller

2 All remote controllers are set

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

3 Miswiring of remote controller 4 Defective transmitting receiving

circuit of remote controller

5 Defective transmitting receiving

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

6 Noise has entered into the

transmission wire of remote controller.

1 Open stop valve. 2 Check facility of power supply. 3 Correct the wiring (U·V·W phase) to

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

4 Check indoor/outdoor fan. 5 Solve short cycle. 6 Replace outdoor controller circuit board. 7 Check compressor.

Refer to 10-6.

W 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.

1 Check disconnection or looseness of indoor

unit or transmission wire of remote controller.

2 Set one of the remote controllers “main”.

If there is no problem with the action above.

3 Check wiring of remote controller.

• Total wiring length: max. 500m[1640ft] (Do not use cable o 3 or more.)

• The number of connecting indoor units:

max. 16 units

• The number of connecting remote con-

troller: max. 2 units

When the above-mentioned problem of 1~3 are not applied 4 Diagnose remote controllers.

a) When “RC OK” is displayed,

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

b) When “RC NG” is displayed,

replace remote controller. c) When “RC E3” is displayed, d) When “ERC 00-06” is displayed, [ c),d)→Noise may be causing abnormality. ]

∗ If the unit is not normal after replacing

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

Remote controller control board

1 Abnormal if data cannot be normally

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

(Error code: E1)

2 Abnormal if the clock function of remote

controller cannot be normally operated.

(Error code: E2)

1 Defective remote controller 1 Replace remote controller.

Error Code

Abnormal point and detection method

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

1 Abnormal if remote controller could not

find blank of transmission path for 6 seconds and could not transmit.

(Error code: E3)

2 Remote controller receives transmitted

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

1 Abnormal if indoor controller board could

not find blank of transmission path.

(Error code: E5)

2 Indoor controller board receives trans-

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

Case

1 2 remote controller are set as

“main.” (In case of 2 remote con-

trollers)

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.

Judgment and action

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 displayed,

noise may be causing abnormality.

(6840)

(6841)

(6607

6608)

(0403)

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

(1) Abnormal if outdoor controller circuit

board could not receive anything normally for 3 minutes.

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.

Non defined error code

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

Serial communication error

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

1 Contact failure of indoor/out-

door unit connecting wire

2 Defective communication circuit

of outdoor controller circuit board

3 Defective communication cir-

cuit of indoor controller board

4 Noise has entered into indoor/

outdoor unit connecting wire.

1 Indoor/ outdoor unit connecting

wire has contact failure.

2 Defective communication circuit

of outdoor controller circuit board

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

door unit connecting wire.

1 Noise has entered transmission

wire of remote controller.

2 Noise has entered indoor/ out-

door unit connecting wire.

3 Outdoor unit is not a power-

inverter models.

4 Model name of remote con-

troller is PAR-S25A.

1 Breaking of wire or contact

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

2 Breaking of wire or contact

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

3 Defective communication circuit

of outdoor power circuit board

4 Defective communication circuit

of outdoor controller circuit board for outdoor power circuit board

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.

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.

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 power-inverter type

outdoor unit.

4 Replace remote controller with MA remote

controller.

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.

2. Abnormal if communication between

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

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.

1 Check disconnection, looseness, or breaking of

connection wire between outdoor controller circuit board (CNMNT) and M-NET board (CN5).

2 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.

Error Code

123456

ON OFF

123456

ON OFF

123456

ON OFF

123456

ON OFF

A-Control Service Tool SW2 setting

Temperature display of indoor liquid pipe Indoor 1

Temperature display of indoor liquid pipe Indoor 2

Temperature display of indoor condenser/ evaporator pipe Indoor 1

Temperature display of indoor condenser/ evaporator pipe Indoor 2

Abnormal point and detection method

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 min. to detect. Note 2) Abnormality P8 is not detected in

drying mode.

Cooling range : Indoor pipe temperature

(TH2 or TH5) – intake temperature (TH1) [ -3 deg [-5.4˚F]

TH: Lower temperature between liquid pipe

temperature and condenser/ evaporator temperature

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

Note 3) It takes at least 27 minutes to

detect abnormality.

Note 4) It excludes the period of defrosting

(Detection restarts when defrosting mode is over)

Heating range : 3 deg [5.4˚F] [ (Condenser/

Evaporator temperature(TH5) – intake temperature(TH1))

Case

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

extension pipe (on plural units connection)

3 Converse wiring of indoor/

outdoor unit connecting wire (on plural units connection)

4 Defective detection of indoor

room temperature and pipe <condenser / evaporator> temperature thermistor

5 Stop valve is not opened

completely.

Judgment and action

1~4 Check pipe <liquid or condenser /

evaporator> temperature with room temperature display on remote controller and outdoor controller circuit board. Pipe <liquid or condenser / evaporator> temperature display is indicated by setting SW2 of outdoor controller circuit board as follows.

Conduct temperature check with outdoor controller circuit board after connecting

(

‘A-Control Service Tool(PAC-SK52ST)’.

23Check converse connection of extension

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

)

<M-NET communication error>

Error Code

(6600)

(6602)

(6603)

Abnormal point and detection method

Address duplicate definition

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

Hardware error of transmission processor

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

BUS BUSY

1. Overtime error by collision damage Abnormal if transmitting signal is not possible for 8-10 minutes continuously because of collision of transmission.

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

Note) The address and attribute displayed

at remote controller indicate the controller that detected abnormality.

remote controller indicate the controller that detected abnormality.

at remote controller indicate the controller that detected abnormality.

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

Case Judgment and action

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.

Error is detected if waveform is transformed when wiring works of transmission wire of outdoor unit, indoor unit, FRESH MASTER or LOSSNAYare 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. 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.

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.

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.

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) are not connected.

4 Check transmission waveform or noise on

transmission wire.

Error Code

(6606)

Abnormal point and detection method

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.

Case Judgment and action

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.

(6607)

NO ACK signal

1. Transmitting side controller detects abnormal if a massage 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).

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).

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).

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

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

2 Extinction of transmission wire

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

• Maximum distance ······200m [656ft]

•

Remote controller line [39ft])

3 Extinction of transmission wire

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

With shield wire-

CVVS, CPEVS

With normal wire (no shield)-

VCTF, VCTFK, CVV

CVS, VVR, VVF, VCT Diameter····1.25mm2[AWG16] 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

1 Contact failure of transmission

wire of outdoor unit or indoor unit

2 Disconnection of transmission

connector (CN2M) of outdoor unit

3 Defective transmitting receiv-

ing circuit of outdoor unit or indoor unit

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

3 Disconnection of transmission

connector (CN2M) of indoor unit

4 Defective transmitting receiv-

ing circuit of indoor unit or remote controller

··(12m

Always try the followings 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 there were some troubles of 1-5 above, 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 different refrigerant system (2 or more outdoor units), judge with 6.

6 If address of abnormality source is the

address that should not exist, there is the unit that memorizes nonexistent address information. Delete useless address information with manual setting function of remote controller. Only the system FRESH MASTER or LOSSNAY are connected to, or the system that is equipped with group setting of different refrigerant system.

If there was no trouble with 1-6 above, replace the controller board of displayed address or attribute. If the unit does not return 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.

Continued to the next page.

From the previous page.

Error Code

Abnormal point and detection method

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).

Case Judgment and action

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 receiv-

ing circuit of indoor unit or remote controller

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

(6607)

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).

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

7. If displayed address or attribute is nonexistent,

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 receiv-

ing circuit of indoor unit or FRESH MASTER

1 If the power supply of LOSS-

NAY is turned 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 turned off or within 2 minutes of restart, abnormality is detected.

3 Contact failure of transmission

wire of indoor unit of LOSSNAY

4 Disconnection of transmission

connector (CN2M) of indoor unit

5 Defective transmitting receiv-

ing circuit of indoor unit or LOSSNAY

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.

Error Code

(6608)

Abnormal point and detection method

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).

Case Judgment and action

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 ······200m [656ft]

•

Remote controller line [39ft])

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····1.25mm2[AWG16] or more

4 Accidental malfunction of

abnormality-generated controller

··(12m

10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA

Phenomena

1. Remote controller display does not work.

1DC12V is not supplied to remote controller.

(Power supply display is not indicated on LCD.)

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

no display is indicated.

• “PLEASE WAIT” is not displayed.

• “PLEASE WAIT” is displayed.

Factor Countermeasure

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.

1Check 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 phenomena No.3 below.

2Check the following.

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

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

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.

1At longest 2 minutes after the power supply “PLEASE

WAIT” is displayed to start up.

2Communication error between the remote controller

and indoor unit

3Communication error between the indoor and outdoor

unit

4Outdoor unit protection device connector is open.

1After cancelling to select function from the remote

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

1Normal operation 2Self-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 normal.

4Check LED display on outdoor controller

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

1Normal operation

Phenomena

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

Factor

1The pair number settings of the wireless remote

controller and indoor controller board are mismatched.

Countermeasure

1Check the pair number settings.

5. When operating by the wireless remote controller, beep sound is heard, however, unit does not start operating.

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

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

1No operation for 2 minutes at most after the power

supply ON.

2Hand-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.

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

1Refrigerant shortage

2Filter clogging

3Heat exchanger clogging

4Air duct short cycle

1Linear expansion valve fault

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

2Refrigerant shortage

3Lack of insulation for refrigerant piping 4Filter clogging

5Heat exchanger clogging

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

1Normal operation 2Normal operation

3Check the details of phenomena No.2 on

previous page.

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.

3 If the filter is clogged, indoor pipe tem

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

4 Remove the shield.

1 Discharging temperature and indoor heat

exchanger temperature does not rise. Inspect the failure by checking discharg ing pressure. Replace linear expansion valve.

2 If refrigerant leaks, discharging tempera-

ture rises and LEV opening increases. Inspect leakage by checking the tem perature 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.

5 If the filter is clogged, indoor pipe tem

perature 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 opera-

tion.

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.)

12Normal operation

(For protection of compressor)

12Normal operation

How long is “PLEASE WAIT”

kept being displayed on the

remote controller?

6 minutes or more

2 minutes or less

2 to 6 minutes

YES

Are any error codes

displayed on the

remote controller?

Are any error codes

displayed on the LED?

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

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

•

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

diagnosis after turning on the main power.

• Normal The start-up diagnosis will

be over in around 2 minutes.

• Miswiring of indoor/ outdoor connecting wire

• Breaking of indoor/ outdoor connecting wire (S3)

• Defective indoor controller board

• Defective outdoor controller circuit board

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

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

• Defective indoor controller board

• Defective remote controller

Check the LED display of the outdoor controller circuit board.

Diagnosis flow Cause

Inspection method and troubleshooting

AC 187V to AC 253V?

DC 12V to DC 16V?

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 :

AC 187V to AC 253V?

Are there looseness or

disconnection of the indoor/

outdoor connecting wire?

Is anything displayed?

DC 17V to DC 28V?

Is “E8” displayed?

Can all the indoor

unit be operated?

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

YES

Not lighting.

Blinking

YES

Not displayed.

Displayed.

YES

Check the voltage between S1 and

S2 on the terminal block (TB4)

of the indoor

unit.

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

doesn’t 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?

DC 10V to DC 16V?

YES

Lighting

Blinking

Lighting

Blinking

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

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

• Defective remote controller

• Replace the remote controller.

• Breaking or poor contact of the remote controller wire

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

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

• The remote controller wire short-circuits

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

• Defective indoor controller board

• Replace the indoor controller board.

Diagnosis flow Cause

Inspection method and troubleshooting

Symptoms: Nothing is displayed on the remote controller 3

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

Check the status of the LED2.

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.

3 Error code appears and blinks

on the display of remote controller.

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

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

3 Error code will be displayed if any protection

devices of the air conditioner are actuated. What is error code?

“PLEASE WAIT” is displayed

on the screen.

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 being

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

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 fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition.

A sound, similar to water

flowing, is heard from the unit.

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 doesn’t 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 0 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 fan is stopped to prevent cold air coming out of the indoor unit.

Sound comes out from the air conditioner.

The fan speed doesn’t 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.

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 doesn’t 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 doesn’t 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.

Phone Calls From Customers How to Respond Note

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

A white mist is expelled from the indoor unit.

Cooling; when pipes or piping joints are cooled, they get sweated and water drips down. Heating; water drips down from the heat exchanger. * 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 wireless remote controller gets dim or doesn’t come on. The indoor unit doesn’t receive a signal from remote controller at a long distance.

1 2 3 4 5 6

Gray

Orange

Red

Yellow

Black

1 2 3 4 5 6

Parts name

Check points

Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10:~30:, 50˚F~86˚F)

Disconnect the connector then measure the resistance with a tester. (Winding temperature 20:, 68˚F)

Thermistor (TH3) <Outdoor pipe>

Thermistor (TH4) <Discharge>

Thermistor (TH6) <Outdoor 2-phase pipe>

Thermistor (TH7) <Outdoor>

Thermistor (TH8) <Heatsink>

Normal

160k"~410k"

4.3k"~9.6k"

39k"~105k"

TH4 TH3 TH6 TH7 TH8

Abnormal

Open or short

Normal

Red - White Red - Orange

Brown - Yellow

Brown - Blue

Abnormal

46±4"

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

, 68˚F)

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

Motor for compressor (MC)

Linear expansion valve (LEV-A) For A12, 18

Linear expansion valve (LEV-A) For A24-42

Normal

Abnormal

Open or short

A18-36 A42

Open or short

Disconnect the connector then measure the resistance with a tester. (Winding temperature 20:, 68˚F)

Measure the resistance between the terminals with a tester. (At the ambient temperature 20:, 68˚F)

Normal

1450±150"

Abnormal

Open or short

Solenoid valve coil <Bypass valve> (SV) For A24-36 only

Refer to next page.

Fan motor(MF1,MF2)

1500±150" 2350±170"

A12, 18

A42

0.320"

A24, 30, 36

0.880"

0.266"

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

, 68˚F)

Normal Abnormal

Open or short

Red Brown Blue

Orange Yellow White

Normal

Gray - Black Gray - Red

Gray - Yellow

Gray - Orange

Abnormal

46±3"

Open or short

10-6. HOW TO CHECK THE PARTS PUZ-A18/24/30/36/42NHA2 PUZ-A18/24/30/36/42NHA2-BS PUY-A12/18/24/30/36/42NHA2 PUY-A12/18/24/30/36/42NHA2-BS

Notes

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

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

board and fan motor.)

Self check Symptom : The outdoor fan cannot turn around.

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

Wiring contact check

Contact of fan motor connector (CNF1, 2)

Fuse check

Check the fuse (F5) on outdoor controller board.

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

Measure the voltage in the outdoor controller circuit

board.

TEST POINT

1 :VDC (between 1 (+) and 4 (-) of the fan connector): VDC DC250~330V

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

Wiring recovery

Replace outdoor controller board.

Replace the fan motor.

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

Replace outdoor controller board.

Replace the fan motor.

Is the voltage normal?

Is there no contact failure?

Yes

Did the fuse blow?

Yes

Check the operation of fan. END

Yes

Check the operation. END

10-7. HOW TO CHECK THE COMPONENTS

-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")

200

150

100

25 50 75 100 110 125 77 122 167 212 230 257:°F

Temperature

Resistance (k")

Low temperature thermistors

• Thermistor <Outdoor pipe> (TH3)

• Thermistor <Outdoor 2-phase pipe> (TH6)

• Thermistor <Outdoor> (TH7) Thermistor R0 = 15k' ±3%

B constant = 3480 ± 2%

t (:): R

T (˚F): R

t =15exp{3480(

T =15exp{3480(

0:[32˚F] 15k'

10:[50˚F] 9.6k'

273+t – 273

273+(T– 32)/1.8 – 273

30:[86˚F] 4.3k'

40:[104˚F] 3.0k' 20:[68˚F] 6.3k' 25:[77˚F] 5.2k'

Medium temperature thermistor

• Thermistor <Heatsink> (TH8) Thermistor R50 = 17k' ±2%

B constant = 4170 ± 3%

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

T (˚F): R

T=17exp{4170(

1 1

273+t – 323

273+(T– 32)/1.8 – 323

0:[32˚F] 180k'

25:[77˚F] 50k' 50:[122˚F] 17k' 70:[158˚F] 8k' 90:[194˚F] 4k'

)}

1 1

)}

1 1

)}

High temperature thermistor

• Thermistor <Discharge> (TH4) Thermistor R120 = 7.465k' ±2%

B constant = 4057 ± 2%

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

T (˚F): R

T =7.465exp{4057(

20:[68˚F] 250k'

30:[86˚F] 160k' 40:[104˚F] 104k' 50:[122˚F] 70k' 60:[140˚F] 48k'

1 1

273+t – 393

)}

1 1

273+(T– 32)/1.8 – 393

70:[158˚F] 34k' 80:[176˚F] 24k'

90:[194˚F] 17.5k' 100:[212˚F] 13.0k' 110:[230˚F] 9.8k'

)}

Open

Extra tightning (about 32 pulse)

Pulse number

500 pulse Opening a valve all the way

Valve position (capacity)

LEV

Red

Brown

Blue

Orange

Yellow

White

Connector LEV-A

DC12V

Outdoor controller board

Drive circuit

Linear expansion valve

ON OFF OFF OFF

ON OFF OFF

OFF

ON OFF OFF

OFF

ON ON

OFF

Output

(Phase)

Output

[2 [3

234

5678

OFF OFF

OFF

OFF OFF

ON ON

OFF OFF OFF

ON OFF OFF

(A12, 18)

(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.

(2) Linear expansion valve operation

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

A point in order to define the valve position.

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

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

occurring from the linear expansion valve ; however, when the pulse number moves from B to A or when the valve is locked, sound can be heard than normal situation. No sound is heard when the pulse number moves from B to A in case coil is burn 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.

Open

Extra tightning (about 32 pulse)

Pulse number

500 pulse Opening a valve all the way

Valve position (capacity)

LEV

Gray

Orange

Red

Yellow

Black

Connector LEV-A

DC12V

Outdoor controller board

Drive circuit

Linear expansion valve

ON OFF OFF OFF

ON OFF OFF

OFF

ON OFF OFF

OFF

ON ON

OFF

Output

(Phase)

Output

[2 [3

234

5678

OFF OFF

OFF

OFF OFF

ON ON

OFF OFF OFF

ON OFF OFF

(A24, 30, 36, 42)

(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.

(2) Linear expansion valve operation

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

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

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

A point in order to define the valve position.

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

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

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

(3) How to attach and detach the coil of linear expansion valve (A12, 18)

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

Coil

Lead wire

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

Stopper

Main body

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 pipe B. (At this time, be careful that stress is not added to lead wire and main body is not wounded by lead wire.) If the stopper is not firmly attached to pipe B, 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.

Be sure to attach the stopper to pipe B.

Main body

Lead wire

Stopper

Coil

Be sure to attach the stopper.

(4) How to attach and detach the coil of linear expansion valve (A24, 30, 36, 42)

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

Hold the lower part of the main body (shown as A) firmly so that the main body does not move and 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 wounded 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.

10-8. EMERGENCY OPERATION

SW4

1 2 Cooling

Heating

OFF

CN31

Shorting pins

SW4

1 2 Cooling

Heating (PUZ only)

Inspected content Open/short of pipe thermistor (TH3/TH6) Indoor/outdoor unit communication error •Signal receiving error (Outdoor unit) Indoor/outdoor unit communication error •Transmitting error (Indoor unit) Communication error other than outdoor unit Communicaiton error between outdoor controller board and M-NET board (Serial communication error)

Error code

U4 E8 E9

E0 ~ E7

●When following abnormalities occur, emergency operation will be available.

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

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

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

1Make sure that there is no abnormality in outdoor unit other than the above abnormalities. (Emergency operation will

not be available when error codes other than the above are indicated.)

2For 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.)

3During 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.

4Do 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.

5Do 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

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

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

(4) Releasing emergency operation

1Turn the main power supply off. 2Set the emergency operation switch (SWE) on indoor controller board to OFF. 3Set the shorting pins of emergency operation connector (CN31) on outdoor controller

board to OFF.

4Set SW4-2 on outdoor controller board as shown in the right.

wIf shorting pins are not set on emergency operation connector (CN31), the setting remains OFF.

(5) Operation data during emergency operation

Operation data

Intake temperature (TH1) Indoor fluid pipe temperature (TH2) Indoor 2-phase pipe temperature (TH5) Set temperature Outdoor fluid pipe temperature (TH3) Outdoor 2-phase pipe temperature (TH6) Outdoor air temperature (TH7) Temperature difference code (intake temperature - set temperature) (∆Tj) Discharge super heat (SHd) Sub-cool (SC)

Operation mode

COOL

27:, 81˚F

5:, 41˚F 5:, 41˚F

25:, 77˚F 45:, 113˚F 50:, 122˚F

35:, 95˚F

30degC, 54degF

5degC, 9degF

HEAT

20.5:, 69˚F 45:, 113˚F 50:, 122˚F

22:, 72˚F

5:, 41˚F 5:, 41˚F 7:, 45˚F

30degC, 54degF

5degC, 9degF

(w1) (w1) (w1)

(w2) (w2)

Remarks

w1: If the thermistor temperature data is normal (not open/short), that data is loaded into the control as valid data.

When the unit enters emergency operation and TH values are mismatched, set the thermistors to open/short. And the unit runs emergency operation with the values listed above.

w2: If one thermistor is set to open/short, the values of SHd/SC will be different from the list abve.

[Example] When liquid temperature thermistor (TH3) has an open or short circuit.

COOL

45:, 113˚F

5:, 41˚F 5:, 41˚F

HEAT

5:, 41˚F

50:, 122˚F 45:, 113˚F

Thermistor

TH3

TH6

TH4

TH5 TH2

Regard normal figure as effective data.

Discharge superheat (SHd) Cooling = TH4 - TH6 = Tc - Ta Heating = TH4 - TH5 = Td - (50: or 122˚F)

Degree of subcooling (SC) Cooling = TH6 - TH3 = Ta - (45: or 113˚F) Heating = TH5 - TH2 = 50: - 45: = 5 degC.

= 122˚F - 113˚F = 9degF

During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values:

10-9. TEST POINT DIAGRAM

<CAUTION> TEST POINT1 is high voltage.

Outdoor controller circuit board PUZ-A18/24/30/36/42NHA2 PUZ-A18/24/30/36/42NHA2-BS PUY-A12/18/24/30/36/42NHA2 PUY-A12/18/24/30/36/42NHA2-BS

SW7

Demand control setting

SW6

Model select

SW4

Test operation

SWP

Pump down

SW5

Function switch

SW8

Wiring replace CNM

Connect to Acontrol service tool

CNMNT Connect to M-NET adapter(CN5)

CNVMNT Connect to M-NET adapter(CND)

LEV-A

Linear expansion valve

63L

Low pressure switch <A42 only>

TH4

Thermistor <Discharge>

TH3

Thermistor <Outdoor pipe>

TH7/6

Thermistor <Outdoor/

2-phase pipe>

63H

High pressure switch

VFG (TEST POINT 4)

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

7(+)-4(-))

(CNF1

SW1

Forced defrost, detect history record reset, refrigerant address

CN51

External signal output

• Compressor operating signal

• Abnormal signal

CNDM

1 to 2: Input of low-level sound priority mode 1 to 3: Input of external contact point

CN52C

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

CN4

Transmission to outdoor power circuit board (CN4)

SV2

Bypass valve <A24/30/36 only>

21S4

Four-way valve <PUZ only>

CN2

Connect to the outdoor power circuit board (CN2) 1-5: Reception from

power circuit board

2-5: Zero cross signal

(0-5V DC)

18V DC

3,4: 6-5: 16V DC 7-5: 16V DC

CNAC

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

VSP (TEST POINT 3)

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

CNF1, CNF2 Connect to the fan motor

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

7.5V DC(When operated) (0V-15V pulse)(CNF2 is only for A42)

CNDC

280V DC (1+, 3-) (Outdoor power circuit board)

CNS

S1-S2:A208/230V AC

+ -

Communication power supply D71 Voltage 24V DC

Outdoor noise filter circuit board PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

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

E3 Connect to the earth

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

EI Connect to the earth

E2 Connect to the earth

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

LO, NO Voltage of 208/230V AC is output. (Connect to the ACL)

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

Outdoor noise filter circuit board PUZ-A24NHA2 PUZ-A24NHA2-BS PUY-A24NHA2 PUY-A24NHA2-BS

EI, E2 Connect to the earth

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

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

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

E3 Connect to the earth

LO, NO Voltage of 208/230V AC is output. (Connect ACL)

Outdoor noise filter circuit board PUZ-A30/36/42NHA2 PUZ-A30/36/42NHA2-BS PUY-A30/36/42NHA2 PUY-A30/36/42NHA2-BS

RS1

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

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

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

EI Connect to the earth

E2 Connect to the earth

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

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

Outdoor power circuit board PUZ-A18NHA2 PUZ-A18NHA2-BS PUY-A12/18NHA2 PUY-A12/18NHA2-BS

Brief check of DIP-IPM and DIP-PFC W 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 DIP-IPM P-U, P-V, P-W, N-U, N-V, N-W

2. Check of DIP-PFC

P-R, P-S, R-N, S-N

LD1-LD2 280-380V DC Connect to the outdoor controller circuit board (CNDC)

R, S Connect to the ACL 208/230V AC

U, V, W Connect to the compressor (MC) Voltage among phases: 5V to 180V AC

DIP-PFC

LD9 Connect to the earth Only A24

DIP-IPM

CN2 Connect to the outdoor controller circuit board (CN2) 1-5:Outdoor power circuit board

to the outdoor controller circuit board (0-5V DC)

2-5: Zero cross signal (0-5V DC) 3-4: Not used 6-5: 16V DC 7-5: 16V DC

1, 2, 6, 7 : +

[

➔ Transmitting signal

]

5 : –

CN3 Thermistor <Heatsink> (TH8)

CN4 Connect from the outdoor controller circuit board (CN4)

CN5 Primary current detection (Connect to the outdoor noise filter circuit board (CN5))

Outdoor power circuit board PUZ-A30/36/42NHA2 PUZ-A30/36/42NHA2-BS PUY-A30/36/42NHA2 PUY-A30/36/42NHA2-BS

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

controller circuit board (0~5V DC)

2-5:Zero cross signal (0~5V DC) 3,4:18V DC 6-5:16V DC 7-5:16V DC

CNAF Connect to ACTM

Brief check of POWER MODULE

W 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

CNDC 280-380V DC (1+, 3–)

DIP-IPM

Connect to the outdoor controller circuit board

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

CN3 Thermistor (TH8) <Heatsink>

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

CN4 Connect to the outdoor controller circuit board (CN4)

TABP2/SC-P2 Connect to ACTM

TABN Connect to the smoothing capacitor CB – (A42N only)

TABP Connect to the smoothing capacitor CB + (A42N only)

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

TABP1 Connect to 52C

TABN1

Connect to

ACTM

TABN2 Connect to ACTM

DCL

L1 L2

ACTM

N1 N2

(+)

(–)

Load

Active filter module PUZ-A30/36/42NHA2 PUZ-A30/36/42NHA2-BS PUY-A30/36/42NHA2 PUY-A30/36/42NHA2-BS

Connect to the outdoor power circuit board (TABP2)

L1, L2

Connect to the DCL (Reactor)

Upper side Lower side

Connect to the outdoor power circuit board (TABP1)

Non-connect

– Connect to the outdoor power circuit board (TABN1)

Connect to the outdoor power circuit board (CNAF) 1 : GND 2-1 : 15V DC 3-1 : Control signal 4, 5 : Not used 6-1 : Control signal

Connection and internal circuit diagram

Connect to the outdoor power circuit board (TABN2)

Switch

Type

switch

Dip

switch

Push

switch

SW1

1 2

No.

Function Effective timing

Action by the switch operation

Forced defrost

1 Start Normal

When compressor is working in heating operation. w1

Abnormal history clear

Refrigerant address

setting

When power supply ON

Clear Normal Off or operating

SWP

Under suspension

Pump down Start Normal

SW4

SW8

1 2 1 2

Test run Operating OFF

Under suspension

Test run mode setting Heating Cooling

No function — — No function

—

Separate indoor/outdoor

unit power supplies

Used Not used

— —

When power supply ON

ON OFF

123

0123

456ON123456ON123456ON123456

123

4567

456ON123456ON123456ON123456

123

891011

456ON123456ON123456ON123456

123

12 13 14 15

456ON123456ON123456ON123456

10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

(1) Function of switches

w1 Forced defrost should be done as follows.

1Change the DIP SW1-1 on the outdoor controller board from OFF to ON. 2Forced defrost will start by the above operation 1 if all these conditions written below are satisfied.

· Heat mode setting

· 10 minutes have passed since compressor started operating or previous forced defrost finished.

· Pipe temperature is less than or equal to 8ºC[46ºF]. Forced defrost will finish if certain conditions are satisfied. Forced defrost can be done if above conditions are satisfied when DIP SW1-1 is changed from OFF to ON. After DIP SW1-1 is changed from OFF to ON, there is no problem if DIP SW1-1 is left ON or changed to OFF again. This depends on the service conditions.

1 2

3,4,5

3 4 5 6 1 2

3,4

1 2 3 4 5 6 7 8 6

ON OFF

No.

Function Effective timing

Action by the switch operation

No function

Power failure

automatic recovery w2

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)

o 0.8

Max. Hz(heating)

o 0.8

—

For high humidity

—

Valid

—

No auto recovery

—

Normal Normal

—

Normal

—

Normal

—

When power supply ON

—

Always

Always Always

—

Always

—

Always

—

Setting of demand control

SW7-1 SW7-2

OFF

0% (Operation stop)

75%

50%

OFF

OFF OFF

Power consumption (Demand switch ON)

Model select

Following SW5-6 reference

123456

OFF

PUZ-A42N

123456

OFF

PUY-A42N

7878123456

OFF

123456

OFF

123456

OFF

PUZ-A18N

MODEL SW6 SW5-5.6

123456

OFF

PUY-A12N

PUY-A18N

123456

OFF

123456

OFF

123456

OFF

123456

OFF

123456

OFF

PUZ-A24N

123456

OFF

PUY-A24N

7878123456

OFF

123456

OFF

123456

OFF

PUZ-A30N

PUZ-A36N

MODEL SW6 SW5-5.6

123456

OFF

123456

OFF

PUY-A30N

PUY-A36N

123456

OFF

123456

OFF

123456

OFF

123456

OFF

123456

OFF

CN31

Types

Connector

Function Effective timing

Connector

Start

Short Open

Action by open/ short operation

Emergency operation

When power supply ON

Normal

w2 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.

w3 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))

w4 Please do not use SW7-3~6 usually. Trouble might be caused by the usage condition.

(2)Function of connector

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. W The performance depends on the load of conditioned outdoor temperature.

How to wire

Purchased locally

Relay supply

SW1

SW1 : Switch X : Relay (Contact spec. : DC1mA)

<Low-level sound priority mode circuit>

Insulate this point securely as this is not used.

Max. 10 m[33ft] including local wiring

Adaptor for external signal input (PAC-SC36NA)

Red 3

Brown 2

Orange 1

Outdoor unit controller board

3 2 1

CNDM

1) Make the circuit as shown above with Adaptor 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) 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 the same as (a). Connect an SW 1 which is procured at field to the between Orange and Red(1 and 3) of the Adaptor 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.

SW7-1 SW7-2

OFF

OFF OFF

Power consumption

(SW1 on)

0% (Operation stop)

50% 75%

F3 F5 F9

—

E6 E7

—

E0 E3 E4 E5 EF

A0~A8

[Display] (1)Normal condition

(2)Abnormal condition

Unit condition

Outdoor controller board A-Control Service Tool

LED1 (Green) LED2 (Red) Error code

When the power is turned on When unit stops When compressor is warming up When unit operates

Lighted Lighted Lighted Lighted

Lighted

Not lighted

Indication of the display

Alternately blinking display

Operation mode

Not lighted

Lighted

00, etc. 08, etc.

C5, H7 etc.

Indication Error

Error

code

Outdoor controller board

Contents Inspection method

LED1 (Green) LED2 (Red) 1 blinking 2 blinking

2 blinking 1 blinking

2 blinking

3 blinking

4 blinking

5 blinking

Connector(63L) is open.

Connector(63H) is open.

2 connectors are open.

Startup time over

Error code is not defined.

Miswiring of indoor/outdoor unit connecting wire, excessive number of indoor units (4 units or more)

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

Indoor/outdoor unit communication error (signal receiving error) is detected by indoor unit.

Indoor/outdoor unit communication error (transmitting error) is detected by indoor unit.

Indoor/outdoor unit communication error (signal receiving error) is detected by outdoor unit.

Indoor/outdoor unit communication error (transmitting error) is detected by outdoor unit.

Remote controller signal receiving error is detected by remote controller.

Remote controller transmitting error is detected by remote controller.

Remote controller signal receiving error is detected by indoor unit.

Remote controller transmitting error is detected by indoor unit.

Serial communication error <Communication between outdoor controller board and outdoor power board> <Communication between outdoor controller board and M-NET P.C. board>

Communication error of M-NET system

W1.Error code displayed on remote controller W2.Refer to service manual for indoor unit.

Check if indoor/outdoor connecting wire is connected correctly.

Check if 4 or more indoor units are connected to outdoor unit. 3Check if noise entered into indoor/outdoor connecting wire or power supply.

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

Check if connector (63L or 63H) on the outdoor controller board is not disconnected.

Check continuity of pressure switch (63L or 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.

1Check if remote controller is MA remote controller(PAR-21MAA). 2Check if noise entered into transmission wire of remote controller. 3Check if noise entered into indoor/outdoor connecting wire. 4Re-check error by turning off power, and on again.

1Check if connecting wire of indoor unit or remote controller

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

3Re-check error by turning off power, and on again.

Check if indoor/outdoor connecting wire is connected correctly.

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

Check if noise entered into indoor/outdoor controller board.

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

P.35 P.36 P.36 P.36

(EA)

P.36

(Eb)

P.36 (EC)

w2 w2

P.41

(E8)

P.41

(E9)

P.40 P.41 P.40 P.41 P.41

P.41

P.42~

P.45

Detailed

reference

page

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.

UF UP UH

U6 U3 U4

U5 U9

P1 P2 P9

P4 P5

Fb E1

Indication Error

Error code

Outdoor controller board

Contents Inspection method

LED1 (Green)

LED2 (Red)

3 blinking 1 blinking

2 blinking

3 blinking

W1 Error code displayed on remote controller W2 Refer to service manual for indoor unit.

4 blinking

5 blinking

6 blinking

7 blinking

1 blinking

2 blinking

3 blinking

4 blinking

5 blinking

––

4 blinking

Abnormality of shell thermostat and discharging temperature (TH4)

1Check if stop valves are open. 2Check if connectors (TH4, LEV-A) on outdoor controller board are not

disconnected.

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

expansion valve using a tester.

Abnormal high pressure (High pressure switch 63H worked.)

Abnormality of outdoor fan motor rotational speed

1Check if indoor/outdoor units have a short cycle on their air ducts. 2Check if connector (63H) on outdoor controller board is not disconnected. 3Check if heat exchanger and filter is not dirty. 4Measure resistance values among terminals on linear expansion valve using a

tester.

1Check if stop valves are open. 2Check looseness, disconnection, and converse connection of compressor wiring. 3Measure resistance values among terminals on compressor using a tester. 4Check if outdoor unit has a short cycle on its air duct.

Compressor overcurrent breaking (Start-up locked) Compressor overcurrent breaking Abnormality of current sensor (P.B.) Abnormality of power module

Open/short of discharge thermistor (TH4)

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

Check if connectors (TH3, TH4, TH6 and TH7) on outdoor controller board and conn-

ector (CN3) on outdoor power board are not disconnected.

Measure resistance value of outdoor thermistors.

Abnormality of heatsink temperature

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

1Check the outdoor fan motor.

Abnormality of voltage 1Check looseness, disconnection, and converse connection of compressor wiring.

2Measure resistance value among terminals on compressor using a tester. 3Check the continuity of contactor (52C). 4Check if power supply voltage decreases. 5Check the wiring of CN52C. 6Check the wiring of CNAF.

Abnormality of room temperature thermistor (TH1) Abnormality of pipe temperature thermistor /Liquid (TH2) Abnormality of pipe temperature thermistor/Condenser-Evaporator(TH5)

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

Abnormality of drain sensor (DS)

Float switch connector open(FS) Indoor drain overflow protection

1Check if connector (CN31)(CN4F) on indoor controller board is not disconnected. 2Measure resistance value of indoor thermistors. 3Measure resistance value among terminals on drain-up machine using a tester. 4Check if drain-up machine works. 5Check drain function.

Freezing (cooling)/overheating (heating) protection

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

Abnormality of pipe temperature

Abnormality of indoor controller board Abnormality of remote controller board

1Check if indoor thermistors (TH2 and TH5) are not disconnected from holder. 2Check if stop valve is open. 3Check converse connection of extension pipe. (on plural units connection) 4Check if indoor/outdoor connecting wire is connected correctly. (on plural units

connection)

1Replace indoor controller board.

1Replace remote controller.

P.37

P.39

P.39 P.40 P.39 P.38 P.38 P.38

P.38 P.39

W2 W2 W2

P.40

Detailed

reference

page

1ON23456

1 second

interval

Display Operation Model

The tens digit : Operation mode

The ones digit : Relay output

C H

Display

0 1 2 3 4 5 6 7 8 A

Compressor

Warming-up Compressor

4-way valve

Solenoid valve

— — —

— ON ON ON ON

—

— — — — — — —

— ON ON

—

— ON ON

—

— ON ON

— ON

—

— —

OFF / FAN

COOLING / DRY w

HEATING

DEFROSTING

Display

Contents to be inspected (When power is turned on) F3 F5 F9 E8 E9

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 0 1 2

Outdoor unit

Indoor unit 1

Indoor unit 2

Display

Contents to be inspected (During operation) U1 U2 U3 U4 U5 U6 U8 UF

UP P1~P8 A0~A7

Abnormal high pressure (63H worked) Abnormal high discharging temperature, shortage of refrigerant Open/short circuit of discharge thermistor (TH4) Open/short of outdoor unit thermistors (TH3, TH6, TH7 and TH8) Abnormal temperature of heatsink Abnormality of power module Abnormality in outdoor fan motor. 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

[When option part ‘A-Control Service Tool(PAC-SK52ST)’is connected to outdoor controller board(CNM)]

Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on ‘A-Control Service Tool’.

Operation indicator SW2 : Indicator change of self diagnosis

SW2 setting

Display detail

Explanation for display Unit

(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

(Lighting)

LED1

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.

SW2

(Initial setting)

SW2 setting

1ON23456

1ON23456 1ON23456

1ON23456

Display detail

Pipe temperature / Liquid(TH3) – 40~194

Explanation for display Unit

– 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 secs. 0.5secs. 2 secs.

˚F

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

Compressor operating current 0~50

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 secs. 0.5secs. 2 secs.

0~10

0~9999 (When the number of times is 100 or more,

hundreds digit, tens digit and ones digit are displayed by turns.)

(Example) When 42500 times (425 ✕100 times);

0.5 secs. 0.5secs. 2 secs.

0~9999 (When it is 100 hours or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

(Example) When 2450 hours (245 ✕10 hours);

0.5 secs. 0.5secs. 2 secs.

0~50 wOmit the figures after the decimal fractions.

˚F

Step

100 times

10 hours

Compressor operating frequency 0~255

0~255 (When it is 100Hz or more, hundreds digit, tens

digit and ones digit are displayed by turns.

(Example) When 125Hz;

0.5 secs. 0.5secs. 2 secs.

LEV-Aopening pulse 0~480

0~480 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns.

(Example) When 150 pulse;

0.5 secs. 0.5secs. 2 secs.

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.

Operation mode on error occurring Operation mode of when operation stops due to

error is displayed by setting SW2 like below.

(SW2)

Pulse

Code

display

Code

display

SW2 setting

1ON23456

1302

Display detail

Pipe temperature / Liquid(TH3) on error occurring – 40~194

Explanation for display Unit

– 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 secs. 0.5secs. 2 secs.

˚F

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

Compressor operating current on error occurring 0~20

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

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

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 secs. 0.5secs. 2 secs.

0~20

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

˚F

Code

display

Code

display

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 secs. 0.5secs. 2 secs.

0~120 (When it is 100 minutes or more, the hundreds digit,

tens digit and ones digit are displayed by turns.)

(Example) When 105 minutes;

0.5 secs. 0.5secs. 2 secs.

Minute

SW2 setting

1ON23456

1ON23456 1ON23456

Capacity

A12N A18N A24N

A30N A36N A42N

Code

9 10 11

Capacity Code

14 20 25

Setting details

• The tens digit (Total display for applied setting)

• The ones digit

H·P /

Cooling only

Single phase / 3 phase

Display details

0 : H·P 1 : Cooling only 0 :

Single phase

2 :

3 phase

Setting details

Defrosting switch

Display details

0 : Normal 1 : For high humidity

1ON23456

Display detail

The number of connected indoor units

Explanation for display

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

Unit

Capacity setting display

Outdoor unit setting information

Indoor pipe temperature / Liquid (TH2(1)) Indoor 1 – 38~190

Displayed as an outdoor capacity code

(Example) When heat pump, 3 phase and

defrosting (normal) are set up, “20” is displayed.

– 38~190 (– 39~88:) (When the temperature is 0ºF or less, “–” and

temperature are displayed by turns.)

Code

display

Code

display

˚F

Indoor pipe temperature / Cond. / Eva. (TH5(1)) Indoor 1 – 38~190

Indoor pipe temperature / Liquid (TH2(2)) Indoor 2 – 38~190

Indoor pipe temperature / Cond. / Eva. (TH5(2)) Indoor 2 – 38~190

Indoor room temperature (TH1) 46~102

– 38~190 (– 39~88:) (When the temperature is 0˚F or less, “–” and

temperature are displayed by turns.)

– 38~190 (– 39~88:) (When the temperature is 0˚F or less, “–” and

temperature are displayed by turns.)

– 38~190 (– 39~88:) (When the temperature is 0˚F or less, “–” and

temperature are displayed by turns.)

46~102 (8~39:)

˚F

1ON23456

SW2 setting

1ON23456

Display detail

Indoor setting temperature 62~86

Explanation for display Unit

62~86 (17~30:)

˚F

1ON23456

Outdoor pipe temperature / Cond./ Eva. (TH6)

-38~190

Outdoor outside temperature (TH7)

-38~190

Outdoor heatsink temperature (TH8)

-40~327

Discharge superheat. SHd 0~327

Cooling = TH4-TH6 Heating = TH4-TH5

Sub cool. SC 0~234

Cooling = TH6-TH3 Heating = TH5-TH4

-38~190 (-39~88:) (When the temperature is 0˚F or less, “–” and

temperature are displayed by turns.)

-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.)

0~327 (0~182degC) (When the temperature is 100degF or more, hun-

dreds digit, tens digit and ones digit are displayed by turns.)

0~234 (0~130degC) (When the temperature is 100˚F or more, hundreds

digit, tens digit and ones digit are displayed by turns.)

˚F

degF

Input current of outdoor unit

Targeted operation frequency 0~255

DC bus voltage 180~370

0~500 (When it is 100 or more, hundreds digit, tens digit

and ones digit are displayed by turns.)

0~255 (When it is 100Hz or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

180~370 (When it is 100V or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

0.1 A

SW2 setting

1ON23456

Display detail

Capacity save 0~100 When air conditioner is connected to M-NET and capacity save mode is demanded, “0”~”100” is displayed.

When there is no setting of capacity save “100” is displayed.

Error postponement code history (2) of outdoor unit

Explanation for display Unit

0~100 (When the capacity is 100%, hundreds digit, tens

digit and ones digit are displayed by turns.)

(Example) When 100%;

0.5 secs. 0.5secs. 2 secs.

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

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

Error thermistor display

When there is no error thermistor, “–“ is displayed.

Operation frequency on error occurring 0~255

Postponement code display Blinking: During postponement Lighting: Cancellation of postponement “00” is displayed in case of no postponement.

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

3: Outdoor pipe temperature /Liquid (TH3) 6: Outdoor pipe temperature /Cond./Eva. (TH6) 7: Outdoor outside temperature (TH7) 8: Outdoor heatsink (TH8)

0~255 (When it is 100Hz or more, hundreds digit, tens digit

and ones digit are displayed by turns.)

(Example) When 125Hz;

0.5 secs. 0.5secs. 2 secs.

Code

display

Code

display

Code

display

Fan step on error occurring 0~10

0~10

Step

SW2 setting

1ON23456

Display detail

LEV-Aopening pulse on error occurring 0~480

Explanation for display Unit

0~480 (When it is 100 pulse or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

(Example) When 130 pulse;

0.5 secs. 0.5secs. 2 secs.

Pulse

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

Indoor pipe temperature / Liquid (TH2) on error occurring

-38~190

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

-38~190

Outdoor pipe temperature / Cond./ Eva. (TH6) on error occurring

-38~190

46~102 (8~39°C)

-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 secs. 0.5secs. 2 secs.

-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 secs. 0.5secs. 2 secs.

-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 secs. 0.5secs. 2 secs.

˚F

Outdoor outside temperature (TH7) on error occurring

-38~190

Outdoor heatsink temperature (TH8) on error occurring

-40~327

-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 secs. 0.5secs. 2 secs.

-40~327 (-40~164°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.)

˚F

SW2 setting

1ON23456

15115

1ON23456

Normal Overvoltage error Undervoltage error Input current sensor error. L1 or L2-phase open error. Abnormal power synchronous signal PFC error (A12, 18, 24NHA) (Overvoltage / Undervoltage / Overcurrent) PFC/ ACTM error Undervoltage

W Display examples for multiple errors: Overvoltage (01) + Undervoltage (02) = 03 Undervoltage (02) + Power-sync signal error (08) = 0A L

1 phase open error (04) + PFC error (10) = 14

Power circuit board Controller circuit board

Controller circuit board Power circuit board Power circuit board Check CNAF wiring.

Defective ACTM/ P.B.

—

Description Detection point Display

00 01 02

04 08 10

Display detail

Discharge superheat on error occurring SHd 0~327

Cooling = TH4-TH6 Heating = TH4-TH5

Explanation for display Unit

0~327 (0~182degC) (When the temperature is 100degF or more,

hundreds digit, tens digit and ones digit are displayed by turns.)

(Example) When 150degF;

0.5 secs. 0.5secs. 2 secs.

degF

Sub cool on error occurring. SC 0~234

Cooling = TH6-TH3 Heating = TH5-TH2

Thermostat-on time until error stops 0~999

U9 Error status during the Error postponement period

0~234 (0~130degC) (When the temperature is 100degF or more,

hundreds digit, tens digit and ones digit are displayed by turns.)

(Example) When 115degF;

0.5 secs. 0.5secs. 2 secs.

0~999 (When it is 100 minutes or more, hundreds digit, tens

digit and ones digit are displayed by turns.)

(Example) When 415 minutes;

0.5 secs. 0.5secs. 2 secs.

degF

Minute

Code

display

SW2 setting

1ON23456

Display

Compressor operating frequency control

Display Compressor operating frequency control

Primary current control Secondary current control

1 2

4 8

•

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 heatsink

(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 heatsink

LED

Display detail

Controlling status of compressor operating frequency

Explanation for display Unit

The following code will be a help to know the operating status of unit.

Code

display

EASY MAINTENANCE FUNCTION

● Reduces maintenance work drastically.

● Enables you to check operation data of the indoor and outdoor units by remote controller.

Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even

for inverter models.

Smooth Maintenance Function

Easy maintenance information (unit)

Compressor Outdoor unit Indoor unit

Accumulated operating

time

(o10 hours) temperature (˚F) temperature (˚F)

Number of ON/OFF Discharge

times (o10 times) temperature (˚F) temperature (˚F) Operating Outside air Filter operating current (A) temperature (˚F) time* (Hours)

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

Heat exchanger

Discharge temperature 147˚F

Remove the service panel.

Measure the discharge

Intake air

Heat exchanger

963

temperature.

● Conventional inspection work

●Outdoor unit ●

●Indoor unit ●

Measure the intake air temperature.

Measure the outside air temperature

11-1.MAINTENANCE MODE OPERATION METHOD

* If you are going to use the "11-2.GUIDE FOR OPERATION CONDITION", set the airflow to "High" before activating

maintenance mode.

● Switching to maintenance mode

Maintenance mode can be activated either when the air conditioner is operated or stopped.

It cannot be activated during test run.

w Maintenance information can be viewed even if the air conditioner is stopped.

■ Remote controller button information

Operation mode

(1)Press the

[Display

TEST

]

MAINTENANCE

If stable operation is unnecessary or if you want to check the data with the air conditioner stopped, skip to step (4).

● Fixed Hz operation

The operating frequency can be fixed to stabilize operation of inverter model.

If the air conditioner is currently stopped, start it by this operation.

button for 3 seconds to switch to maintenance mode.

A C B

Compressor information

Outdoor unit information

Indoor unit information

Confirm

Activate/cancel maintenance mode

(2)Press the

[Display

(3)Press the

[Display

MODE

]

FILTER

] Waiting for stabilization

button to select the desired operation mode.

Stable cooling operation

COOL STABLE MODE

( ) button to check the setting.

Stable heating operation

HEAT STABLE MODE

Stable operation cancellation

STABLE MODE CANCEL

Stabilized

After 10 to 20 minutes

● Data measurement

When the operation is stabilized, measure operation data as explained below.

(4)Press the [TEMP] buttons ( and ) to select the desired refrigerant address.

[Screen

(5)Select the type of data to be displayed.

After selecting, go to step (6). Compressor information

button

[Display A]

Outdoor unit information

button

[Display A

45 6

]

Indoor unit information

button

[Display

78 9

]

(6)Press the

( ) button to check the setting.

[Display example for accumulated operating time]

(7)Data is displayed on the display (at C).

To check the data for each item, repeat steps (5) to (7).

(8)To cancel maintenance mode, press the

button for 3 seconds or press the

button.

12,340 hours

Display

Waiting for response

Flashing

After approx. 10 seconds

[1:1]

Refrigerant address=00

[Twin]

Refrigerant address=00

Outdoor

unit

Indoor unit

Outdoor

unit

Remote

controller

Remote

controller

Indoor unit

■ Refrigerant address Single refrigerant system

In the case of single refrigerant system, the refrigerant address is "00" and no operation is required. Simultaneous twin units belong to this category (single refrigerant system).

Multi refrigerant system (group control)

Up to 16 refrigerant systems (16 outdoor units) can be connected as a group by one remote controller. To check or set the refrigerant addresses.

Cumulative

12 3

operation time

COMP ON o10 HOURS

ON/OFF

Heat exchanger temperature

OUTDOOR UNIT

H·EXC. TEMP

Indoor room temperature

INDOOR UNIT INLET TEMP

FILTER

ON/OFF Number Operating current

COMP ON o100 TIMES

Comp discharge temperature

OUTDOOR UNIT OUTLET TEMP

Heat exchanger temperature

INDOOR UNIT H·EXC. TEMP

COMP ON CURRENT (A)

Outdoor ambient temperature

OUTDOOR UNIT OUTDOOR TEMP

Filter operating time

INDOOR UNIT FILTER USE H

TEST

Refrigerant address 00

Outdoor

unit

Indoor unit

Remote

controller

Refrigerant address 01

Outdoor

unit

Indoor unit

ON/OFF

Refrigerant address 02

Outdoor

unit

Indoor unit

Refrigerant address 15

Outdoor

unit

Indoor unit

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

Compressor

Temperature

Cleanli-

ness

Outdoor Unit

Temperature

Cleanliness

Indoor Unit

* 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?

(

5 Discharge temperature) – (4 Outdoor

heat exchanger temperature) (

7 Indoor intake air temperature) – (8

Indoor heat exchanger temperature)

(

5 Discharge temperature) – (8 Indoor

heat exchanger temperature) (

8 Indoor heat exchanger temperature) –

(

7 Indoor intake air temperature)

Cool

Classification Item Result

Inspection

Temperature difference

Heat

Inspection

Temperature difference

Stable Unstable

˚F

Stable Unstable

˚F

* Fixed Hz operation may not be possible under the following tempera-

ture ranges. A)In cool mode, outdoor intake air temperature is 104 ˚F or 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.

* 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.

* In heat mode, the operation state may vary due to frost forming on the

outdoor heat exchanger.

˚F

81 72 63 54 45 36 27 18

˚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. *1 Performance has dropped. Detailed inspection 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

* *1

18 36 54 72 90 108 126 144

The above judgement 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.

˚F

81 72

Inspection C

63 54 45

Filter inspection

Normal

27 18

Inspection A

0 18 36 54 72 90 108 126 144

Inspection B

12 FUNCTION SETTING

Meaning of "Function setting" Mode02 : indoor temperature detecting

No.

Indoor temperature(ta)=

No1.

Average data of the sensor on all the indoor units

Initial setting

ta=(A+B)/2 ta=(A+B)/2 ta=A ta=A

No2.

Data of the sensor on the indoor unit that connected with remote controller

ta=A ta=B ta=A ta=A

No3.

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

12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1.

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

<Table 1> Function selections

Function

Power failure automatic recovery Indoor temperature detecting

LOSSNAY connectivity

Power supply voltage Auto mode (only for PUZ) Frost prevention temperature Humidifier control

Change of defrosting control

Settings

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) 230V 208V Auto energy-saving operation ON Auto energy-saving operation OFF 2: [36˚F] (Normal) 3: [37˚F] When the compressor operates, the humidifier also operates. When the fan operates, the humidifier also operates. Standard For high humidity

Mode No.

04 05 15 16 17

Setting No.

: Initial setting

(when sent from the factory)

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

Remarks

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

Function

Settings

No.

Mode

No.

Setting

: Initial setting (Factory setting

)

- : Not available

4-Way

cassette

Ceiling suspended

Wall

mounted

PCA-GA

PKA-GA(L)

PKA-FA(L)

Filter sign

100h

2500h

07 2

"Clean the filter" indicator is not displayed

Air flow

Quiet

(

Fan speed

)

Standard

08 2 -

High ceiling

No.of air outlets

4 directions

1--

3 directions

09 2 - -

2 directions

Optional high efficiency

Not supported

filter

Supported

Vane setting

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

Vane No.1 setting

11 2 -

Vane No.2 setting

Energy saving air

Disabled

flow (Heating mode

)

Enabled

Optional humidifier

Not supported

(

PLA only

)

Supported

Vane differential setting

No.1 setting (TH5: 24-28:)

in heating mode

No.2 setting (Standard, TH5:28-32:)

14 2

(

cold wind prevention

)

No.3 setting (TH5: 32-38:)

Swing

1 2

Set temperature in heating

mode (4 deg up

)

Fan speed when the

Extra low

heating thermostat is OFF

Stop

25 2

Keeping fan speed set by remote controller

Quiet operation mode

Disabled (Standard)

of PLA-AA(Fan speed

)

Enabled (Quiet operation mode)

Fan speed when the

Keeping fan speed set by remote controller

cooling thermostat is OFF

Stop

Detection of abnormality of

Detect

the pipe temperature (P8

)

Neglect

PLA-BA

Not available Swing Available Wave air flow Available

Temperature correction: Valid

Not available

Temperature correction: Invalid

}

PLA-BA

}

PLA-BA

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

Mode No.11

Setting No. Settings PLA-BA PCA-GA

No Vanes

Vane No.3 setting

(

Downward position than the standard

)

Less smudging

No vane function

2 Vane No.1 setting Standard Standard 3 Vane No.2 setting

(

Upward position than the standard

)

Less draft *

(

Upward position than the standard

)

Less draft *

* Be careful of the smudge on ceiling.

• 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 case of wireless remote controller) referring to 4 setting the indoor unit number.

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

First, try to familiarize yourself with the flow of the function selection procedure. In this section, an example of setting the room temperature detection position is given. For actual operations, refer to steps 1 to 0 .

Modes 01 to 14 can be activated by pressing buttons

and

simultaneously, and modes 15 to 28 by pressing buttons

and J.

The above procedure must be carried out only if changes are necessary.

Setting number

Refrigerant address Unit number

Mode number

Selecting functions using the wired remote controller

Check the function selection setting.

Switch to function setting mode.

(Press

and B at the same time

with stop the remote controller.)

Specify refrigerant address 00 (outdoor unit).

Specify unit No. 00. (indoor unit)

(Use

and D.)

Enter the setting.

(Press

Select mode No. 02

(Specified indoor unit: FAN operation)

(room temperature detection position).

Select setting No. 03 (remote controller fixed).

(Use

and G.)

Enter the setting.

(Press

Example: Selecting room temperature detection position

Finished

For modes 15 and higher,

and B at the same time.

press

YES

Change refrigerant address or unit No.

YES

End function display.

(Press A and B at the same time.)

[Operating Procedure]

1 Check the setting items provided by function selection.

If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps 2 to 7 , fill in the "Check" column in Table 1, then change them as necessary. For initial settings, refer to the indoor unit's installation manual.

2 Switch off the remote controller.

A Hold down the ( mode is 15 to 28)and B

buttons simultaneously for at least 2 seconds. will start to blink, then the remote controller's display content will change as shown below.

3 Set the outdoor unit's refrigerant address.

C Press the [

CLOCK] buttons ( and ) to select the desired

refrigerant address. The refrigerant address changes from "00" to "15". (This operation is not possible for single refrigerant systems.)

* If the unit stops after

blinked for 2 seconds or "88" blinks in the room temperature display area for 2 seconds, a transmission error may have occurred.

Check to see if there are any sources of noise or interference near the transmission path.

Note : If you have made operational mistakes during this procedure, exit function selection (see step 0 ), then restart from step 2.

4 Set the indoor unit number.

D Press the

button so that " - -" blinks in the unit number display

area.

C Press the [

CLOCK] buttons ( and ) to select the unit number

of the indoor unit for which you want to perform function selection. The unit number changes to "00", "01", "02","03",04" and "AL" each time a button is pressed.

* To set modes 01 to 06 or 15 to 22, select unit number "00". * To set modes 07 to 14 or 23 to 28, carry out as follows:

To set each indoor unit individually, select "01" to "04". To set all the indoor units collectively, select "AL".

5 Confirm the refrigerant address and unit number.

E Press the

button to confirm the refrigerant address and unit number. After a while, "- - " will start to blink in the mode number display area.

E When the refrigerant address and unit number are confirmed by pressing the

button, the corresponding indoor unit will start fan operation. This

helps you find the location of the indoor unit for which you want to perform function selection. However, if "00" or "AL" is selected as the unit number, all the indoor units corresponding to the specified refrigerant address will start fan operation.

* "88" will blink in the room temperature display area if the selected refrigerant

address does not exist in the system. Furthermore, if

"F"

appears and blinks in the unit number display area and the refrigerant address display area also blinks, there are no units that correspond to the selected unit number. In this case, the refrigerant address and unit number may be incorrect, so repeat steps 2 and 3 to set the correct ones.

* When grouping different refrigerant systems, if an indoor unit other than the

one to which the refrigerant address has been set to perform fan operation, there may be another refrigerant address that is the same as the specified one. In this case, check the DIP switch of the outdoor unit to see whether such a refrigerant address exists.

6 Select the mode number.

F Press the [

TEMP] buttons ( and ) to set the desired mode

number. (Only the selectable mode numbers can be selected.)

7 Select the setting content for the selected mode.

G Press the

button. The currently selected setting number will

blink, so check the currently set content.

F Press the [

TEMP] buttons ( and ) to select the desired setting

number.

8 Register the settings you have made in steps 3 to 7 .

E Press the

button. The mode number and setting number will start

to blink and registration starts.

The mode number and setting number will stop blinking and remain lit, indicating the end of registration.

* If " - - - " is displayed for both the mode number and setting number and "

" blinks in the room temperature display area, a transmission error may have occurred.

Check to see if there are any sources of noise or interference near the transmission path. 9 If you wish to continue to select other functions, repeat steps 3 to 8 . 0 Complete function selection.

A Hold down the ( mode is 15 to 28) and buttons

simultaneously for at least 2 seconds. After a while, the function selection screen will disappear and the air condi-

tioner OFF screen will reappear.

* Do not operate the remote controller for at least 30 seconds after completing

function selection. (No operations will be accepted even if they are made.)

Note If a function of an indoor unit is changed by function selection after installation is complete, make sure that a " " mark, etc., is given in the "Check" column of Table 1 to indicate the change.

Unit number display section

Mode number display section

00 refrigerant address

Indoor unit

Fan draft

Remote controller

Unit number 01 Unit number 02

Outdoor unit

Designate operation

Example) When the refrigerant address is set to 00 and the unit number is 02.

Mode number display section

Mode number 02 = Indoor temperature detection

Setting number display section

Setting number 3 = Remote controller built-in sensor

Setting number 1 = Indoor unit operating average

TEST

FUNCTION SELECTION

TEST

FILTER

Refrigerant address display section

FUNCTION SELECTION

ON/OFF

MODE

FILTER

ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

CHECK

RESET

SET

CLOCK

CHECK

min

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 can't 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 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

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

min

Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refrigerant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller.

[Flow of function selection procedure]

[Operating instructions]

1 Check the function settings. 2 Press the button twice continuously. → CHECK is lit and “00” blinks.

Press the temp button once to set “50”. Direct the wireless remote controller toward the receiver of the indoor unit and press the button.

3 Set the unit number.

Press the temp button to set the unit number. (Press “01” to specify the indoor unit whose unit number is 01.) Direct the wireless remote controller toward the receiver of the indoor unit and press the button.

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.

* If a unit number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the unit number

setting.

* If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the unit number

setting.

4 Select a mode.

Press the temp button to set a mode. Press “24” to turn on the function that raises the set temperature by 4 degree during heat operation. Direct the wireless remote controller toward the sensor of the indoor unit and press the button. → The sensor-operation indicator will blink and beeps will be heard to indicate the current setting number. Current setting number: 1 = 1 beep (one second)

2 = 2 beeps (one second each)

* If a mode number that cannot be recognized by the unit is entered, 3 beeps of 0.4 seconds will be heard. Reenter the mode

number.

* If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the mode

number.

5 Select the setting number.

Press the temp button to select the setting number. (02: Not available) Direct the wireless remote controller toward the receiver of the indoor unit and press the button. → The sensor-operation indicator will blink and beeps will be heard to indicate the setting number.

Setting number: 1 = 2 beeps (0.4 seconds each)

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

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

* Do not use the wireless remote controller for 30 seconds after completing the function setting.

* If the signal was not received by the sensor, you will not hear a beep or a “double ping sound” may be heard. Reenter the setting number.

Press button.

3 = 3 beeps (one second each)

2 = 2 beeps (0.4 seconds each, repeated twice) 3 = 2 beeps (0.4 seconds each, repeated 3 times)

12-2. FUNCTION SELECTION OF REMOTE CONTROLLER

The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed.

Item 1

1.Change language ("CHANGE LANGUAGE")

2.Function limit ("FUNCTION SELECTION")

3.Mode selection ("MODE SELECTION")

4.Display change ("DISP MODE SETTING")

Item 3 (Setting content)

• Display in multiple languages is possible.

• Setting the range of operation limit (operation lock)

• Setting the use or non-use of "automatic" operation mode

• Setting the temperature adjustable range (maximum, minimum)

• Selecting main or sub remote controller *

When two remote controllers are connected to one group, one controller must be set to sub.

• Setting the use or non-use of clock function

• Setting the timer type

• Contact number display in case of error

• Setting the telephone number

• Setting the temperature unit (: or °F) to display

• Setting the use or non-use of the display of indoor (room) air temperature

• Setting the use or non-use of the display of "Cooling" or "Heating" display during

operation with automatic mode

Item 2

Language setting to display

(1)

Operation function limit setting (operation lock) ("LOCKING FUNCTION")

(2)

Use of automatic mode setting ("SELECT AUTO MODE")

(3)

Temperature range limit setting ("LIMIT TEMP FUNCTION")

(1)

Remote controller main/sub setting ("CONTROLLER MAIN/SUB")

(2) Use of clock setting ("CLOCK") (3) Timer function setting ("WEEKLY TIMER") (4) Contact number setting for error situation ("CALL.")

(1) Temperature display :/°F setting ("TEMP MODE :/°F") (2) Room

air temperature display setting ("ROOM TEMP DISP SELECT")

(3)

Automatic cooling/heating display setting ("AUTO MODE DISP C/H")

[Function selection flowchart] Refer to next page. [1] Stop the air conditioner to start remote controller function selection mode. [2] Select from item1. [3] Select from item2. [4] Make the setting. (Details are specified in item3) [5] Setting completed. [6] Change the display to the normal one. (End)

➔➔➔

➔➔

[Detailed setting] [4] -1. CHANGE LANGUAGE setting

The language that appears on the dot display can be selected.

• Press the [

MENU] button to change the language.

1 Japanese (JP), 2English (GB), 3 German (D), 4 Spanish (E), 5 Russian (RU), 6 Italian (I), 7 Chinese (CH), 8 French (F)

[4] -2. Function limit (1) Operation function limit setting (operation lock)

• To switch the setting, press the [ ON/OFF] button. 1 no1 : Operation lock setting is made on all buttons other than

the [

ON/OFF] button.

2 no2: Operation lock setting is made on all buttons. 3 OFF (Initial setting value) : Operation lock setting is not made

* To make the operation lock setting valid on the normal screen, it is

necessary to press buttons (Press and hold down the [FILTER] and [ ON/OFF] buttons at the same time for 2 seconds.) on the normal screen after the above setting is made..

(2) Use of automatic mode setting When the remote controller is connected to the unit that has automatic operation mode, the following settings can be made.

• To switch the setting, press the [ ON/OFF] button. 1 ON (Initial setting value) : The automatic mode is displayed when

the operation mode is selected.

2 OFF : The automatic mode is not displayed

when the operation mode is selected.

[4] -3. Mode selection setting (1) Remote controller main/sub setting

• To switch the setting, press the [ ON/OFF] button.

1 Main : The controller will be the main controller. 2 Sub : The controller will be the sub controller.

(2) Use of clock setting

• To switch the setting, press the [

ON/OFF] button.

1 ON : The clock function can be used. 2 OFF: The clock function cannot be used.

(3) Timer function setting

• To switch the setting, press the [ ON/OFF] button (Choose one of the followings.).

1 WEEKLY TIMER (initial setting): The weekly timer can be used. 2 AUTO OFF TIMER: The auto off timer can be used.

SIMPLE TIMER: The simple timer can be used.

TIMER MODE OFF: The timer mode cannot be used.

* When the use of clock setting is OFF, the "WEEKLY TIMER" cannot be

used.

(4) Contact number setting for error situation

• To switch the setting, press the [ ON/OFF] button.

1 CALL OFF:

The set contact numbers are not displayed in case of error.

2 CALL **** *** **** : The set contact numbers are displayed in case

of error.

(3) Temperature range limit setting After this setting is made, the temperature can be changed within the set range.

• To switch the setting, press the [ ON/OFF] button. 1 LIMIT TEMP COOL MODE :

The temperature range can be changed on cooling/dry mode.

2 LIMIT TEMP HEAT MODE :

The temperature range can be changed on heating mode.

3 LIMIT TEMP AUTO MODE :

The temperature range can be changed on automatic mode. 4 OFF (initial setting) : The temperature range limit is not active. *

When the setting, other than OFF, is made, the temperature range limit setting on cooling, heating and automatic mode is made at the same time. However the range cannot be limited when the set temperature range has not changed.

•

To increase or decrease the temperature, press the [ TEMP ( ) or ( )] button.

•

To switch the upper limit setting and the lower limit setting, press the

[ ]

button. The selected setting will flash and the temperature can be set.

• Settable range

Cooling/Dry mode : Lower limit: 19 : ~ 30:, 67˚F~87˚F

Upper limit: 30 : ~ 19:, 87˚F~67˚F

Heating mode : Lower limit: 17 : ~ 28:, 63˚F~83˚F

Upper limit: 28 : ~ 17:, 83˚F~63˚F

Automatic mode : Lower limit: 19 : ~ 28:, 67˚F~83˚F

Upper limit: 28 : ~ 19:, 83˚F~67˚F

CALL_ : The contact number can be set when the display is as

shown on the left.

• Setting the contact numbers To set the contact numbers, follow the following procedures. Move the flashing cursor to set numbers. Press the [

TEMP. ( ) and

(

)] button to move the cursor to the right (left). Press the [ CLOCK

(

) and ( )] button to set the numbers.

[4] -4. Display change setting (1) Temperature display :/ F setting

• To switch the setting, press the [ ON/OFF] button.

1 : : The temperature unit : is used. 2 F: The temperature unit

°°

F is used.

(2) Room air temperature display setting

• To switch the setting, press the [ ON/OFF] button.

1 ON : The room air temperature is displayed. 2 OFF: The room air temperature is not displayed.

(3) Automatic cooling/heating display setting

• To switch the setting, press the [ ON/OFF] button. 1 ON : One of "Automatic cooling" and "A utomatic heating" is displayed

under the automatic mode is running.

2 OFF: Only "Automatic" is displayed under the automatic mode.

OFF

no1

no2

OFF

CALL-

OFF

˚C

˚F

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

English

Germany Spanish

Russian

Italian Chinese French

Japanese

Item 3

Item 2Item 1

Hold down the E button and press the D button for 2 seconds.

Remote controller function selection mode

E Press the operation mode button.

Press theTIMER MENU button.

Press theTIMER ON/OFF button.

Dot display

Normal display (Display when the air conditioner is not running)

[Function selection flowchart]

Setting language (English)

Room air temperature is not displayed.

One of “Automatic cooling” and “Automatic heating” is displayed under the automatic mode is running. (Initial setting value)

Only “Automatic” is displayed under the automatic mode.

Change Language

Function selection

Mode selection

Display mode setting

Operation lock setting is not used. (Initial setting value)

Operation lock setting is except On/Off button.

Operation lock setting is all buttons.

The automatic mode is displayed when the operation mode is selected. (Initial setting value)

The automatic mode is not displayed when the operation mode is selected.

The temperature range limit is not active. (Initial setting value)

The temperature range can be changed on cooling/dry mode.

The temperature range can be changed on heating mode.

The temperature range can be changed on automatic mode.

The remote controller will be the main controller. (Initial setting value)

The remote controller will be the sub controller.

The clock function can be used. (Initial setting value)

The clock function cannot be used.

Weekly timer can be used. (Initial setting value)

Auto off timer can be used.

Simple timer can be used.

Timer mode cannot be used.

The set contact numbers are not displayed in case of error. (Initial setting value)

The set contact numbers are displayed in case of error.

The temperature unit ˚F is used.(Initial setting value)

The temperature unit ˚C is used.

Room air temperature is displayed. (Initial setting value)

Fixed air flow direction mode

Not necessary to set this mode. Refer to OPERATION MANUAL of indoor unit for details on operation.

Automatic filter elevation panel up/down operation mode

Not necessary to set this mode. Refer to OPERATION MANUAL of Optional Parts (Panel) for details on operation.

One of the description marked * on the right will be displayed. (current setting)

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

1 Press the set button with something sharp at the end. MODEL SELECT blinks. 2 Press the 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.

AUTO START

1 4

COOL

DRY

AUTO

FAN

HEAT

ON/OFF TEMP

RUN

MODEL

SELECT

FAN

SWING

NOT AVAILABLE

START

TEST

CHECK

˚F ˚C

AMPMSTOP

AMPM

1 4

MODE

CHECK

TEST RUN

FAN

VANE

LOUVER

RESETSET CLOCK

AUTO STOP

AUTO START

min

MONITORING THE OPERATION DA TA BY THE REMOTE CONTROLLER

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

• Turn on the [Monitoring the operation data]

(3)

Example) Request code "004"

Discharge temperature 156˚F Refrigerant address "00"

(7) (5)

(1) (2)

(4)

(1)Press the (2)Press the

Note) It is not possible to switch to [Maintenance monitor] during data request in maintenance mode (i.e., while "- - - -" is blinking),

Operating the service inspection monitor

- - - ] appears on the screen (at D) when [Maintenance monitor] is activated.

[ (The display (at D ) now allows you to set a request code No.)

(3)Press the [TEMP] buttons (

[Screen B ]

(4)Press the [CLOCK] buttons ( and ) to set the desired request code No. (5)Press the

(The requested data will be displayed at C in the same way as in maintenance mode.) Data collected during operation of the remote controller will be displayed.

The collected data such as temperature data will not be updated automatically even if the data changes. To display the updated data, carry out step (4) again.

TEST

CHECK

since no buttons are operative.

FILTER

button for 3 seconds so that [Maintenance mode] appears on the screen (at A).

button for 3 seconds to switch to [Maintenance monitor].

and ) to select the desired refrigerant address.

button to perform data request.

(6)

A: Mode display B: Refrigerant address C: Data display area D: Request code display area

Canceling the Monitoring the operation data

(6)While [Maintenance monitor] is displayed, press the (7)To return to normal mode, press the

ON/OFF

CHECK

button.

button for 3 seconds to return to maintenance mode.

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

0 1 2 3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18

20 21

22 23 24 25 26 27 28 29 30 31

35 36

37 38 39 40 41 42 43 44 45 46 47 48 49

Operation state Compressor-Operating current (rms) Compressor-Accumulated operating time Compressor-Number of operation times Discharge temperature (TH4) Outdoor unit - Liquid pipe 1 temperature (TH3) Outdoor unit - Liquid pipe 2 temperature Outdoor unit-2-phase pipe temperature (TH6)

Outdoor unit-Outside air temperature (TH7) Outdoor unit-Heatsink temperature (TH8)

Discharge super heat (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) <Heat mode-4-deg correction> Indoor unit-Intake air temperature (Unit No. 2) <Heat mode-4-deg correction> Indoor unit-Intake air temperature (Unit No. 3) <Heat mode-4-deg correction> Indoor unit-Intake air temperature (Unit No. 4) <Heat mode-4-deg correction>

Indoor unit - Liquid pipe temperature (Unit No. 1) Indoor unit - Liquid pipe temperature (Unit No. 2) Indoor unit - Liquid pipe temperature (Unit No. 3) Indoor unit - Liquid pipe temperature (Unit No. 4)

Indoor unit-Cond./Eva. pipe temperature (Unit No. 1) Indoor unit-Cond./Eva. pipe temperature (Unit No. 2) Indoor unit-Cond./Eva. pipe temperature (Unit No. 3) Indoor unit-Cond./Eva. pipe temperature (Unit No. 4)

Thermostat ON operating time Test run elapsed time

Refer to 13-2-1. Detail Contents in Request Code. 0 – 50 0 – 9999 0 – 9999 37 ~ 327

-40 ~ 194

-38 ~ 190

-40 ~ 327

0 – 327 0 – 234

0 – 255 0 – 255 0 – 10

0 – 9999

0 – 500 0 – 500

0 – 50 180 – 370

0 – 4 62 ~ 86 46 ~ 102

46 ~ 102

-38 ~ 190

0 – 999 0 – 120

– A

10 hours

100 times

˚F ˚F ˚F ˚F

˚F ˚F

Hz Hz

Step

rpm

Pulses Pulses

A V

Units

˚F ˚F

˚F

˚F ˚F ˚F ˚F

Minutes Minutes

"0" is displayed if the air conditioner is a single-fan

type.

"0" is displayed if the target unit is not present.

"0"

is displayed if the target unit is not present.

"0"

is displayed if the target unit is not present.

Not possible to activate maintenance mode during the test run.

Request code

Request content

Description

(Display range)

Unit Remarks

50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83

84 85

86 87 88

89 90

92 93 94 95 96 97 98 99

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)

0 – 255

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. 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. 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.

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.

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. 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"

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.) Displays error history. (" - - " is displayed if no history is present.) Displays error history. (" - - " is displayed if no history is present.)

: F TH3 6 : F TH6 7 : F TH7 8 : F TH8 0 : F No thermistor error

Displayed in the same way as request code "0". 0 – 50 0 – 9999 0 – 9999 37 ~ 327

-40 ~ 194

-38 ~ 190

-40 ~ 327 0 – 327 0 – 234 0 – 255

0 – 10

0 – 9999

0 – 500 0 – 500

0 – 999

-38 ~ 190

Code Code Code

Sensor

number

– A

10 hours

100 times

˚F ˚F ˚F ˚F

Step

rpm

Pulses Pulses

Minutes

˚F

˚F ˚F ˚F

"0" is displayed if the air conditioner is a single-

fan type.

Average value of all indoor units is displayed if the air conditioner consists of two or more indoor units (twin, triple, quad). Average value of all indoor units is displayed if the air conditioner consists of two or more indoor units (twin, triple, quad).

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-2-phase 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-2-phase pipe temperature

Request code

Request content

Description

(Display range)

Unit Remarks

153 154

155 156

157 158 159

160 161 162 163 164 165 166 167

~ 189 190 191

192

~ 764 765 766

767

0 – 9999

0 –

255

Fan control data

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

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

Refer to 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 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.

100

Mitsubishi Electronics PUY-A36NHA2, PUY-A42NHA2-BS, PUY-A36NHA2-BS, PUZ-A18NHA2-BS, PUY-A18NHA2 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual