Mitsubishi PUHZ-SP100YKA, PUHZ-SP125VKA.TH, PUHZ-SP125YKA, PUHZ-SP125YKA.TH, PUHZ-SP140YKA.TH Service Manual

...

SERVICE MANUAL

No.OCH671

SPLIT-TYPE AIR CONDITIONERS

R410A

September 2017

PARTS CATALOG (OCB671)

CONTENTS

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

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

3. SPECIFICATIONS ··································· 6

4. DATA ····················································7

5. OUTLINES AND DIMENSIONS ················ 10

6. WIRING DIAGRAM ································ 11

7. WIRING SPECIFICATIONS ····················· 13

REFRIGERANT SYSTEM DIAGRAM

·········· 18

9. TROUBLESHOOTING ···························· 20

10. FUNCTION SETTING ····························· 77

11.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

····89

12. EASY MAINTENANCE FUNCTION ··········· 99

13. DISASSEMBLY PROCEDURE ················103

Outdoor unit [Model Name]

PUHZ-SP125VKA

PUHZ-SP140VKA

PUHZ-SP100YKA

PUHZ-SP125YKA

PUHZ-SP140YKA

[Service Ref.]

PUHZ-SP125VKA.TH PUHZ-SP140VKA.TH PUHZ-SP100YKA.TH PUHZ-SP125YKA.TH PUHZ-SP140YKA.TH

OCH671

2-1. ALWAYS OBSERVE FOR SAFETY

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

INDOOR UNIT SERVICE MANUAL

Model name Service Ref.

Service Manual No.

PLA-SM71/100/125/140EA* PLA-SM71/100/125/140EA.UK

OCH683 OCB683

PEAD-SM71/100/125/140JA(L) PEAD-SM71/100/125/140JA(L).UK —

* These models will be released on Dec/2017.

SAFETY PRECAUTION

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

Preparation before the repair service.

• Prepare the proper tools.

• Prepare the proper protectors.

• Provide adequate ventilation.

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

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

Precautions during the repair service.

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

• Do not pour water into the electric parts.

• Do not touch the refrigerant.

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

• When the repair or the inspection of the circuit needs to be done without turning off the power, exercise great caution

not to touch the live parts.

REFERENCE MANUAL

OCH671

[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) If moisture or foreign matter might have entered the refrigerant piping during the service, ensure to remove them.

[2] Additional refrigerant charge

When charging directly from cylinder

(1) Check that cylinder for R410A on the market is syphon type. (2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

Electronic weighing scale

Unit

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

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

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

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

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

If large amount of mineral oil enters, that 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.

Charge refrigerant from liquid phase of gas cylinder.

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

Use new refrigerant pipes.

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

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

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

• Avoid using thin pipes.

Do not use refrigerant other than R410A.

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

Handle tools with care.

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

Do not use a charging cylinder.

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

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

The following tools are necessary to use R410A refrigerant.

Flare tool

Electronic refrigerant charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

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

Never use any refrigerant other than that specified.

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

Use the specified refrigerant only.

OCH671

2-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES

(1) Flowchart

[3] Service tools

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

No. Tool name Specifications

Gauge manifold • Only for R410A

• Use the existing fitting

specifications

. (UNF1/2)

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

Charge hose • Only for R410A

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

Electro

nic weighing s

cale

—

Gas leak detector

• Use the detector for R134a, R407C or R410A.

Adaptor for reverse flow check

• Attach on vacuum pump.

Refrigerant charge base

—

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

• Cylinder with syphon

Refrigerant recovery equipment

—

Perform the airtight test, vacuum air purging, additional refrigerant charging (if necessary), and gas leak check.

• Refer to the owchart below to determine if the existing pipes can be used and if it is necessary to use a lter dryer.

• If the diameter of the existing pipes is different from the specied diameter, refer to technological data materials to conrm if

the pipes can be used.

▼

Measure the existing pipe thickness and check for damage.

The existing pipe thickness meets specications and the pipes are not damaged.

Check if the existing air conditioner can operate.

After operating the cooling system for about 30 minutes, do a pump down work.

Disconnect the existing air conditioner from the pipes.

Attach the new air conditioner

Test run

The existing pipes cannot be reused. Use new pipes.

Note: If the existing air conditioner cannot operate, use a refrigerant recovery device to collect the refrigerant.

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

The existing pipe thickness does not meet

specications or the pipes are damaged.

OCH671

(2) Cautions for refrigerant piping work

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

1 Thickness of pipes

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

2 Dimensions of flare cutting and flare nut

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

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

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

6.35

9.52

12.70

15.88

19.05

0.8

1.0

—

0.8

1.0

Nominal

dimensions(inch)

Diagram below: Piping diameter and thickness

Outside

diameter

(mm)

Thickness

(mm)

R410A R22

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

6.35

9.52

12.70

15.88

19.05

9.1

13.2

16.6

19.7

—

9.0

13.0

16.2

19.4

23.3

Nominal

dimensions(inch)

Flare cutting dimensions

Outside

diameter

Dimension A

( )

-0.4

(mm)

R410A R22

(mm)

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

6.35

9.52

12.70

15.88

19.05

17.0

22.0

26.0

29.0 *

—

17.0

22.0

24.0

27.0

36.0

Nominal

dimensions(inch)

Flare nut dimensions

Outside

diameter

Dimension B

R410A

* 36.0mm for indoor unit

R22

(mm)

Gauge manifold Charge hose Gas leak detector

Refrigerant recovery equipment Refrigerant cylinder Applied oil

Safety charger

Charge valve

Vacuum pump

Flare tool

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

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

Prevent compressor malfunction when charging refrigerant by

spraying liquid refrigerant Prevent gas from blowing out

when detaching charge hose Vacuum drying and air purge

Flaring work of piping

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

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

Tool exclusive for R410A

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

Tool exclusive for R410A

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

(Usable if equipped with adapter for rever se flow)

(Usable by adjusting flaring dimension)

Can R407C tools be used?

Ester oil: Alkylbenzene oil: minimum amount

(Usable if equipped with adapter for rever se flow)

(Usable by adjusting flaring dimension)

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

Dimension A

Dimension B

OCH671

3 SPECIFICATIONS

Service Ref

PUHZ-SP125VKA.TH

PUHZ-SP140VKA.TH

PUHZ-SP100YKA.TH

PUHZ-SP125YKA.TH

PUHZ-SP140YKA.TH

Power supply (phase,cycle,voltage)

Single phase, 50 Hz, 230 V 3-phase, 50 Hz, 400 V

Max. current A 26.5 30 11.5 11.5 11.5 External nish Munsell 3Y 7.8/1.1 Refrigerant control Linear Expansion Valve Compressor Hermetic

Model

MNB33FBDMC-L MNB33FBDMC-L SNB220GBAMT MNB33FBDMC-L MNB33FBDMC-L Motor output kW 2.5 2.5 1.5 2.5 2.5 Starter type Direct input Protection devices Shell thermistor

H.P. switch Heat exchanger Plate n coil Fan Fan(drive) x No. Propeller fan x 1

Fan motor output

kW 0.200

Air volume

/min

87 87 79 87 87

Noise level

Cooling

SPL(db)

54 56 51 54 56

Heating

SPL(db)

56 57 54 56 57

Cooling

SPL(db)

72 75 70 72 75

Dimensions W

mm(inch)

1,050 (41-5/16)

mm(inch)

330+25 (13+1)

mm(inch)

981 (38-5/8) Weight kg 84 84 78 85 85 Refrigerant R410A

Charge kg 3.8 3.8 3.3 3.8 3.8 Oil (Model) cc 1100 (FV50S) 1100 (FV50S) 700 (FV50S) 1100 (FV50S) 1100 (FV50S)

REFRIGERANT PIPING

Pipe size O.D Liquid

mm(inch)

9.52 (3/8)

Gas

mm(inch)

15.88 (5/8)

Connection method

Indoor side Flared Outdoor side Flared

Between the indoor & Outdoor unit

Height difference

Maximum 30 m

Piping length

Maximum 40 m

Maximum 30 m

Maximum 40 m

OCH671

4 DATA

4-1. REFILLING REFRIGERANT CHARGE (R410A : kg)

0.88

0.95

MNB33FBDMC-L

PUHZ-SP125/140VKA.TH

Service Ref.

Compressor model

(at 20°C)

U-V

U-W

W-V

Winding

Resistance

( " )

PUHZ-SP125/140YKA.TH

PUHZ-SP100YKA.TH

SNB220FBAMT

Service Ref.

Piping length (one way)

Initial

charged

30m 40m

PUHZ-SP125VKA.TH

0 0.6

3.8

PUHZ-SP140VKA.TH

PUHZ-SP100YKA.TH 3.3

PUHZ-SP125YKA.TH

3.8

PUHZ-SP140YKA.TH

4-2. COMPRESSOR TECHNICAL DATA

OCH671

4-3. NOISE CRITERION CURVES

1.5m

MICROPHONE

UNIT

GROUND

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

COOLING

HEATING

MODE

54 56

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

BAND CENTER FREQUENCIES, Hz

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

COOLING

HEATING

MODE

56 57

SPL(dB)

LINE

APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

63 125 250 500 1000 2000 4000 8000

BAND CENTER FREQUENCIES, Hz

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR

COOLING

HEATING

MODE

51 54

SPL(dB)

LINE

PUHZ-SP100YKA.TH PUHZ-SP125VKA.TH

PUHZ-SP125YKA.TH

PUHZ-SP140VKA.TH PUHZ-SP140YKA.TH

OCH671

4-4. STANDARD OPERATION DATA

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

Representative matching PUHZ-SP100 PUHZ-SP125 PUHZ-SP140 Mode COOLING HEATING COOLING HEATING COOLING HEATING Total Capacity W 9.4 11.2 12.1 13.5 13.6 15.0

input kW 3.29 3.48 4.23 4.18 5.63 4.81

Electrical circuit

Indoor PLA-SM100EA.UK PLA-SM125EA.UK PLA-SM140EA.UK Phase, Hz 1, 50 1, 50 1, 50 Voltage V 230 230 230 Current A 0.46 0.44 0.66 0.64 0.66 0.64 Outdoor PUHZ-SP100YKA PUHZ-SP125VKA

PUHZ-SP125YKA

PUHZ-SP140VKA

PUHZ-SP140YKA Phase, Hz 1, 50 3, 50 1, 50 3, 50 1, 50 3, 50 Voltage V

230 400 230 400 230

400

Current A 14.0/5.0 14.0/5.0 18.0/6.5 17.5/6.5 23.5/9.0 20.5/7.5

Refrigerant circuit

Discharge Pressure MPa 2.79 2.68 3.00 2.62 3.21 2.78 Suction pressure MPa 0.86 0.68 0.85 0.65 0.77 0.62 Discharge temperature

77.9 78.5 76.7 69.7 88.1 72.6

Condensing temperature

47.0 45.3 49.9 44.6 53.2 47.0

Suction temperature

12.6 3.0 7.5 −0.8 7.9 −2.0

Ref. pipe length m 7.5 7.5 7.5

Indoor side

Intake air temperature

27 20 27 20 27 20

19 14 19 14 19 14

Discharge air temperature

13.5 39.9 12.2 42.1 11.3 44.3

Outdoor side

Intake air DB

35 7 35 7 35 7

temperature WB

24 6 24 6 24 6 SHF 0.77 — 0.73 — 0.70 — BF 0.24 — 0.15 — 0.14 —

PUHZ-SP100YKA.TH PUHZ-SP125VKA.TH PUHZ-SP125YKA.TH PUHZ-SP140VKA.TH PUHZ-SP140YKA.TH

OCH671

5 OUTLINES AND DIMENSIONS

Unit: mm

PUHZ-SP100YKA.TH PUHZ-SP125VKA.TH PUHZ-SP125YKA.TH PUHZ-SP140VKA.TH PUHZ-SP140YKA.TH

OCH671

PUHZ-SP125VKA.TH PUHZ-SP140VKA.TH

Terminal Block <Power Supply, Indoor/Outdoor> Motor for Compressor Fan Motor High Pressure Switch Thermistor <Liquid> Thermistor <Discharge> Thermistor <2-Phase Pipe> Thermistor <Ambient> Thermistor <Heat Sink> Thermistor <Comp. Surface> Linear Expansion Valve

21S4 DCL1, DCL2, DCL3 CY1, CY2 CX1 P.B. C.B.

F1, F2, F3, F4 SW1

SW4 SW5

Solenoid Valve (4-Way Valve) Reactor Capacitor Capacitor Power Circuit Board Controller Circuit Board Fuse <T6.3AL250V> Switch

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

Switch

SW6 SW7 SW8 SW9 SWP CN31 CN51 CNDM CNM X52

Switch

<Model Select> Switch <Function Switch> Switch <Function Switch> Switch <Function Switch> Switch <Pump Down> Connector <Emergency Operation> Connector <Connection for Option> Connector <Connection for Option> Connector <Connection for Option> Relay

SYMBOL TB1 MC MF1 63H TH3 TH4 TH6 TH7 TH8 TH33 LEV-A, LEV-B

SYMBOL SYMBOLNAME NAME NAME

1 2 3 4 5 6 7 8

OFF

1 2 3 4 5 6 7 8

OFF

SW6-4, 5, 6, 7, 8 *2

MODEL

125V

140V

The black square (■) indicates a switch position.

*1. MODEL SELECT

*2. SW6-1 to 3: Function switch

P. B.

CN6

(WH)

t°

1 2

CN4

(WH)

1 2

TH8

IC600

CNDC

(PK)

1 3

CNAC2

(RD)

CNAC1

(WH)

LI NI

1 3 1 3

IC500

E3E4 EI E2

CN2 (RD)

TB3B

TB1B

TB2B

TB1A

TB2A

TB3A

BK WH RD RD BKWH

DCL1

DCL2

DCL3

C. B.

TH6TH7 TH4TH3

t° t° t° t°

LEV-A

CNS (WH)

CNAC

(WH)

CNDC

(PK)

TH7/6

(RD)

TH3 (WH)

TH4

(WH)

TRANS

CNVMNT

(WH)

CNMNT

(WH)

63H

(YE)

1 4 1 2 2 1

1 3

31 1

1 2

LEV-A

(WH)

21S4

(GN)

MF1

CNF1 (WH)

63H

LEV-B

(RD)

LEV-B

CNDM

(WH)

CN51

(WH)

TH33

(YE)

TH33

t°

When M-NET Adapter is connected

CN2M

(WH)

CN5

(WH)

CND (WH)

M-NET

M-NET ADAPTER

3 5

CNM (WH)

1 14

LED1

LED2

21S4

TB7

A B S

X52

L N S1 S2 S3

POWER SUPPLY ~/N 230V 50Hz

TB1

GNYE

TO INDOOR

UNIT

CY1

CY2

CX1

CN2 (RD)

CN4

(WH)

1 7

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

SW5SW8SWP

SW4

SW1 SW6

SW9 SW7

CN31

WIRING DIAGRAM

OCH671

PUHZ-SP100YKA.TH PUHZ-SP125YKA.TH PUHZ-SP140YKA.TH

Terminal Block <Power Supply> Terminal Block <Indoor/Outdoor> Motor for Compressor Fan Motor High Pressure Switch Thermistor <Liquid> Thermistor <Discharge> Thermistor <2-Phase Pipe> Thermistor <Ambient> Thermistor <Heat Sink> Thermistor <Comp. Surface> Linear Expansion Valve

21S4 ACL4 DCL RS CY1, CY2 P.B. N.F. C.B.

Solenoid Valve (4-Way Valve) Reactor Reactor Resistor Capacitor Power Circuit Board Noise Filter Circuit Board Controller Circuit Board Fuse <T6.3AL250V> Switch

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

SW5 SW6 SW7 SW8 SW9 SWP CN31 CN51 CNDM CNM X52

F1, F2, F3, F4 S

SW4

Switch

Switch

SYMBOL TB1 TB2 MC MF1 63H TH3 TH4 TH6 TH7 TH8 TH33 LEV-A, LEV-B

SYMBOL SYMBOLNAME NAME NAME

1 2 3 4 5 6 7 8

OFF

1 2 3 4 5 6 7 8

OFF

SW6-4, 5, 6, 7, 8 *2

MODEL

100Y

1 2 3 4 5 6 7 8

OFF

125Y

140Y

The black square (■) indicates a

switch position.

*1. MODEL SELECT

*2. SW6-1 to 3: Function switch

P.B.

POWER SUPPLY 3N~

400V 50Hz

TB1

RDWHBK

N.F.

CNAC1

(WH)

CNDC

(PK)

CNL

(BU)

CNAC2 (RD)

CNCT (RD)

1 2

LO1

LO2

LO3

LI1

LI2

LI3

TB2

GNYE

21S4

(GN)

21S4

X52

BKBK

TO INDOOR

UNIT

1 2

CN6

(WH)

1 2 CN5 (RD)

CN2 (RD)

1 7 1 2

CN4 (WH)

TB-U

TB-V

TB-W

L3IN

TB-L2

TB-L1

TH8

t°

CY1

CY2

C. B.

TH6TH7 TH4

t° t° t°

CNS

(WH)

CNAC

(WH)

CNDC

(PK)

CN2 (RD)

CN4

(WH)

TH7/6

(RD)

TH4 (WH)

TRANS

CNVMNT

(WH)

CNMNT

(WH)

63H (YE)

1 4 2 1

TH3

t°

TH3

(WH)

1 2

1 3

31 1

1 2

MF1

CNF1

(WH)

63H

LEV-B

(RD)

LEV-B

LEV-A

(WH)

LEV-A

CNDM

(WH)

CN51 (WH)

1 3 TH33

(YE)

TH33

t°

When M-NET adapter is connected

CN2M (WH)

CN5

(WH)

CND

(WH)

M-NET

M-NET ADAPTER

TB7

A B S

3 5

CNM (WH)

1 14

LED1

LED2

TB-L3

X52CB

L3OUT

DCL

X52CA

TB-P1

TB-P3

ACL4

SW5SW8SWP

SW4

SW1 SW6

SW9 SW7

CN31

RD RD

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

OCH671

7 WIRING SPECIFICATIONS

1 2

S1 S2 S3

Indoor/outdoor unit connection cable

Indoor unit

Unit power supply

Outdoor unit

Remote controller

B Earth leakage breaker C wiring circuit breaker or

isolating switch

1:1 system Electrical wiring

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

2. Power supply cables and Indoor/Outdoor unit connecting cables shall not be lighter than polychloroprene sheathed flexible cable.

3. Install an earth line longer than power cables.

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

(Design 60245 IEC 57)

A-Control

Outdoor Unit

3 poles isolator

Power supply

Isolator

A-Control

Indoor Unit

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

7-1. FIELD ELECTRICAL WIRING (power wiring specifications)

Outdoor unit model PUHZ-SP125VKA PUHZ-SP140VKA PUHZ-SP100/125/140YKA

Outdoor unit power supply ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V

3N~ (3 ph 4-wires), 50 Hz, 400 V

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

Wiring Wire

No. × size

(mm

)

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

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

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

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

Circuit rating

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

*4 230 V AC 230 V AC 230 V AC

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

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

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

*1. A breaker with at least 3.0 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). Make sure that the current leakage breaker is one compatible with higher harmonics.

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

*2. Max. 45 m

If 2.5 mm² used, Max. 50 m If 2.5 mm² used and S3 separated, Max. 80 m

• Use one cable for S1 and S2 and another for S3 as shown in the picture.

• Max. 50 m Total Max. for PEY. Wiring size 3 × 1.5 (Polar).

*3. The 10 m wire is attached in the remote controller accessory.

*4. The gures are NOT always against the ground.

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

Caution: Be sure to install N-Line. Without N-Line, it could cause damage to the unit.

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7-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES

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

1:1 System

The optional indoor power supply terminal kit is required.

S1 S2

1 2

S1 S2 S3

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

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

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

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

Indoor unit specifications

Required

Electric heater (For models with heater)

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

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

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

Connectors

Indoor unit

control board

Separate indoor unit/outdoor unit power supplies

Electric heater (For models with heater)

BLUE

YELLOW

CND

CN01

ORANGE

CN01

ORANGE

YELLOW

BLUE

YELLOW

CND

Indoor unit

control board

Note:

There are 3 types of labels (labels A, B, and C). Affix the appropriate labels to the units according to the wiring method.

ON OFF

Set the SW8-3 to ON.

1 2 (SW8)

Simultaneous twin system

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.

A B C D E F G H J

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

Indoor unit earth

D G

K K

B C B C

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use earth leakage breaker (NV). The breaker shall be provided to ensure disconnection of all active phase conductor of the supply. *2. Max. 120 m *3. Max. 500 m (Max. 200 m when 2 remote controllers are used) *4.The figures are NOT always against the ground.

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

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

3. Install an earth line longer than power cables.

Indoor unit model Indoor unit power supply Indoor unit input capacity

Main switch (Breaker)

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

Indoor unit-Outdoor unit earth Remote controller-Indoor unit

Indoor unit L-N *4

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

71–140

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

16 A

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

–

2 o 0.3 (Non-polar)

230 V AC

– 24 V DC 12 V DC

Circuit

rating

Wiring

Wire No. o size

(mm

)

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7-3. INDOOR – OUTDOOR CONNECTING CABLE

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

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

Indoor unit-Outdoor unit

Outdoor power supply

Max. 45m

3 o 1.5 (polar)

1 o Min. 1.5

Max. 50m

3 o 2.5 (polar)

1 o Min. 2.5

Indoor unit-Outdoor unit earth

Wire No. o Size (mm²)

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

2 o Min. 0.3

—

Indoor unit-Outdoor unit earth

Wire No. o Size (mm²)

Note: The optional indoor power supply terminal kit is necessary

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7-4. M-NET WIRING METHOD

(Points to note) (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 5 cm. Do not put them in the same conduit tube.

(2) Terminal block (TB7) for transmission wires should never be connected to 220–240 V power supply. If it is connected,

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

(3) Use 2-core × 1.25mm² shield wire (CVVS, CPEVS) for the transmission wire. Transmission signals may not be sent or

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

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

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

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

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

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

In case of single spot earthing, noise does not enter into the shield wire because the earth wire and shield wire do not form

1 circuit.

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

installation manual.

Group remote controller

Refrigerant address 00

M-NET address 01

A-control remote

controller

A-control remote

controller

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 earthing of shield wire)

Good example 1 (Single spot earthing 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 earthing of shield wire)

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7-4-3. Regulations in address settings

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

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

Note: In group B, M-NET address of the outdoor unit whose refrigerant address is “00” is not set to the minimum in the group. As “3” is right for this situation, the setting is wrong. Taking group A as a good sample, set the minimum M-NET address in the group for the outdoor unit whose refrigerant address is “00”.

7-4-1. M-NET address setting

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

Address number can be set by using rotary switches (SW11 for 1st digit and SW12 for 2nd digit), which is located on the M-NET board of outdoor unit. (Initial setting: all addresses are set to “0”.)

7-4-2. Refrigerant address setting

In the case of multiple grouping system (multiple refrigerant circuits in 1 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”.)]

1 2

M-NET Address No.

Switch setting

SW11 1st digit

SW12 2nd 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 × 1.25mm² shield wire for electric wires. (Excluding the case connecting to system controller.) (2) Connect the wire to the M-NET terminal block. Connect one core of the transmission

wire (non-polar) to A terminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.

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

S) on M-NET terminal block should be individually wired to the other outdoor unit’s terminal, i.e. A to A, B to B and S to S. In this case, choose one of those outdoor units and drive a screw to fix an earth wire on the plate as shown on the right figure.

Transmission

wire

Shield part

M-NET terminal block

Earth wire

A B S

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8 REFRIGERANT SYSTEM DIAGRAM

Unit : mm (inch)

Thermistor (TH8) <Heat Sink>

Refrigerant LIQUID pipe connection [9.52 (3/8)

Stop valve (with charge plug)

Strainer #100

Power receiver

LEV-A

Strainer #100

High pressure switch 63H

Thermistor TH4 (Discharge)

Thermistor TH33 (Comp. surface)

Compressor

Strainer #50

Strainer #100

4-way valve

Muffler

Charge plug

Stop valve

Refrigerant GAS pipe

connection [15.88 (5/8)

Refrigerant flow in cooling

Refrigerant flow in heating

Heat exchanger

Thermistor TH6 (Condenser)

Thermistor TH7 (Ambient)

Thermistor TH3 (Liquid)

Distributor

LEV-B

PUHZ-SP100YKA.TH PUHZ-SP125VKA.TH PUHZ-SP125YKA.TH PUHZ-SP140VKA.TH PUHZ-SP140YKA.TH

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8-2. 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) can be set up.

1 Turn on SW4-1 to start test run. 2 Turn off SW4-1 to finish the test run.

• There may be a faint knocking sound around the machine room after power is supplied, but this is no problem with product

because the linear expansion pipe is just moving to adjust opening pulse.

• There may be a knocking sound around the machine room for several seconds after compressor starts operating, but this

is no problem with product because the check valve itself, generates the sound because pressure difference is small in the refrigerant circuit.

8-1. REFRIGERANT COLLECTING (PUMP DOWN)

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

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

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

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

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

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

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

● Only push the pump-down SWP switch if the unit is stopped. However, even if the unit is stopped and the pump-down SWP

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

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

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

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

LED2 lit), be sure to quickly close the gas stop valve. However, if LED1 is lit, LED2 is off, and the unit is stopped, open the liquid stop valve completely, close the valve completely after 3 minutes or more have passed, and then repeat step 5. (Open the gas stop valve completely.)

● If the refrigerant collecting operation has been completed normally (LED1 off, LED2 lit), the unit will remain stopped until the

power supply is turned off.

● Note that when the extension piping is very long with a large refrigerant amount, it may not be possible to perform a pump-

down operation. In this case, use refrigerant recovery equipment to collect all of the refrigerant in the system.

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

Warning:

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

• If the refrigerant pipes are disconnected while the compressor is operating and the stop valve is open, the pressure in

the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal injury, etc.

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9 TROUBLESHOOTING

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

9-1. TROUBLESHOOTING

Unit conditions at service

Check code

Actions to be taken for service (summary)

The trouble is reoccurring.

Displayed

Not displayed

Judge what is wrong and take a corrective action according to “9-4. SELF-DIAGNOSIS ACTION TABLE”.

Conduct trouble shooting and ascertain the cause of the trouble according to “9-5. TROUBLESHOOTING OF PROBLEMS”.

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 such. Re-check the symptom, and check the installation environment, refrigerant amount, weather when the trouble occurred, and wiring related. 2Reset check code logs and restart the unit after finishing service. 3There is no abnormality in electrical component, controller board, remote controller, etc.

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

trouble

according to “9-5. TROUBLESHOOTING

PROBLEMS”. 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, etc.

9-2. CHECK POINT UNDER TEST RUN

9-2-1. Before test run

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

age, loosened connections and incorrect polarity.

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

and check that it is 1.0M" or over.

* Do not use 500 V Megger to indoor/outdoor connecting wire terminal block (S1, S2, S3) and remote controller terminal block (1, 2). This may cause malfunction.

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

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

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

settings referring to the description of “10. FUNCTION SETTING”.

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

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F1 F2 F3 F4

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Test run Input maintenance info. Function setting Check Self check

F1 F2 F3 F4

Test run menu

Cursor

Service menu:

Test run Drain pump test run

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

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

Select "Test run" with the F1

or F2 button, and press the button.

F1 F2 F3 F4

Cool

Pipe

Auto

Switch disp.

Mode Fan

RemainTest run

F1 F2 F3 F4

Remain

Vane

Check the auto vane with the F1 F2 buttons.

Press the

button to return to “Test run operation”.

Press the

button.

When the test run is completed, the “Test run menu” screen will appear. * The test run will automatically stop after two hours.

Test run operation

Auto vane check

Press the button and open the Vane setting screen.

Function buttons

F1 F2 F3 F4

MENU RETURN SELECT ON/OFF

9-2-2. Test run for wired remote controller

<PAR-3xMAA("x" represents 0 or later)>

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

Cool mode: Check the cold air blows out. Heat mode: Check the heat blows out.

Press the F1

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

and Heat".

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F1 F2 F3 F4

Error information

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

ResetPage

Error information

Contact information Dealer Tel

ResetPage

Reset error: Reset button

blinks

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

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

Press the

button to go to the next page.

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

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

F1 F2 F3 F4

Error information

Error reset

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

ResetPage

Reset current error?

Error reset

OKCancel

Main menu:

Reset error: Reset button

blinks

Press the

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

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

Select "OK" with theF4button.

Navigating through the screens

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

button

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F1 F2 F3 F4

Main

Main display:

Cursor Page

Main menu

Restriction Energy saving Night setback Filter information Error information

blinks

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

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Test run Input maintenance info. Function setting Check Self check

Check menu

Cursor

Service menu:

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

F1 F2 F3 F4

Error history

Page

Delete

Check menu:

Error Unt#

dd/mm/yy

Error history

Cancel OK

Delete error history?

Error history

Check menu:

Error history deleted

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

Select "Check" with the F1

or F2 button, and press the button.

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

Four records are shown per page, and the top record on the rst page

indicates the latest check code record.

Error history

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

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

Press the F4

button (OK) to delete the history.

"Error history deleted" will appear on the screen.

Press the

button to go back to the Check menu screen.

Deleting the error history

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

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[TEST] button

Pipe (liquid) temperature

Displays the remaining test run time.

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

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

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

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

be displayed regardless of incorrect wiring.

*1 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.)

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

• If one of the above operations does not function correctly, the causes written below should be considered. Find causes from

the symptoms.

The below symptoms are under test run mode. “Startup” in the table means the display status of *1 written above.

Remote Controller Display

Symptoms in test run mode

OUTDOOR BOARD LED Display

Cause

Remote controller displays “PLEASE WAIT”, and

cannot be operated.

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

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

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

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

minutes during

system startup. (Normal)

• Incorrect connection of outdoor terminal block (L

1, L2, L3 and

S1, S2, S3.)

• Outdoor unit’s protection devise connector is open.

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

• Remote controller transmission wire short.

• There is no outdoor unit of address 0.

(Address is other than 0.)

• Remote controller transmission wire open.

• After canceling function selection, operation is not possible for

about 30 seconds. (Normal)

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>

< > indicates digital display.

2. Press TEST button twice.

1. Turn on the main power supply.

3. Press OPERATION SWITCH button.

4. Press AIR DIRECTION button.

5. Check the outdoor unit fan for correct running.

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

7. Register the contact number.

While the room temperature display on the remote controller is “PLEASE WAIT”, the remote controller is disabled. Wait until “PLEASE WAIT” disappears before using remote controller. “PLEASE WAIT” appears for about 2 minutes after power supply is turned on. *1

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

Check for correct motion of auto-vanes.

The TEST RUN appears on the screen.

Operating procedures

Cooling mode:

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

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

LCD display.

LCD

Contents of trouble

P1 P2 P4 P5 P6 P8 P9 PL

Abnormality of room temperature thermistor Abnormality of pipe temperature thermistor/Liquid Abnormality of drain sensor/ Float switch connector open Drain overflow protection is operating. Freeze/overheat protection is operating. Abnormality of pipe temperature

Abnormality of pipe temperature thermistor/Cond./Eva Abnormality of refrigerant circuit

LCD

Contents of trouble

U1~UP

F3~F9 E0~E5

E6~EF

----

FFFF

Abnormality of indoor controller board 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

(microprocessor power supply)

LED2

(remote controller)

LED3

(indoor/outdoor communication)

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

Flashes when indoor and outdoor unit are communicating.

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

9-2-3. Test run for wired remote controller <PAR-21MAA>

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ON/OFF

TEMP

FAN

VANE

MODE

CHECK

LOUVER

TEST RUN

AUTO STOP

AUTO START

min

TEST RUN

RESET

SET

CLOCK

MODE

COOL

TEST RUN

FAN

VANE

TEST RUN

9-2-4. Test run for wireless remote controller

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

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

(Start this operation from the status of remote controller display

turned off.)

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

check whether cool air blows out from the unit.

4 Press the ( ) button to activate mode, then

check whether warm air blows out from the unit.

5 Press the button and check whether strong air blows out

from the unit.

6 Press the button and check whether the auto vane operates

properly.

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

Note:

• Point the remote controller towards the indoor unit receiver

while following steps 2 to 7.

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

MODE

HEAT

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Test run Input maintenance info. Function setting Check Self check

kcehc fleS

:tceleS

Ref. address

sserddA

kcehc fleS

Ref. address

Return:

teseR

Error Unt # CI.prG

Self check

Return:

Reset

Ref. address 0

Error Grp.

Unt#

When there is no error history

Self check

Delete error history?

Ref. address

Cancel OK

Self check

Return:

Ref. address

Error history deleted

With theF1orF2button, enter the refrigerant address, and press the button.

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

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

Check code, unit number, attribute will appear.

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

Resetting the error history.

Press the

button (Reset) on the screen that shows the check code history.

A conrmation screen will appear asking if you want to delete the check code history.

Press theF4button (OK) to delete the check code history.

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

Navigating through the screens

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

button

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

button

9-3. HOW TO PROCEED "SELF-DIAGNOSIS"

9-3-1. Self-diagnosis <PAR-31MAA>

OCH671

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

F1 F2 F3 F4

unem ecivreS

rosruC

:unem niaM

Maintenance password Remote controller check

F1 F2 F3 F4

Remote controller check

:nigeB

Start checking?

Remote controller check

:nigeB

Start checking?

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

Select "Remote controller check" with the F1

or F2 button, and press

the

button.

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

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

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

or the button.

The remote controller will not reboot itself.

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

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

parts for problems.

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

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

NG (ALL0, ALL1):

Send-receive circuit fault. Remote controller needs replacing.

ERC:

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

Remote controller check results screen

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

cally reboot itself.

9-3-2. Remote controller check <PAR-31MAA>

OCH671

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

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

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

2. In the case of group control, for which one remote controller controls multiple refrigerant systems, the refrigerant address and check code of the unit that first experienced trouble (i.e., the unit that transmitted the check code) will be displayed.

3. T

o clear the check code, press the

ON/OFF

button.

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

During central control by a MELANS controller, cancel the check code by pressing the

ON/OFF

button.

Since each unit has a function that stores check codes, the latest check code can be recalled even if it is cancelled by the re

mote

controller or power is turned off.

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

1. Switch to self-diagnosis mode.

Press the

CHECK

button (H

in the picture above) twice within 3 seconds.

The display content will change as shown below.

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

Press the [TEMP] buttons (

and ) (F in the picture above)

to select the desired number or address. The number (address) changes between [01] and [50] or [00] and [15].

3. Display self-diagnosis results.

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

4. Reset the error history.

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

3 ).

Check 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

Check code (2 or 4 digits)

(Alternating Display)

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

9-3-3. Self-diagnosis <PAR-21MAA>

9-3-4. Self-Diagnosis During Maintenance or Service <PAR-21MAA>

OCH671

Transmission data from remote controller

Transmission data on transmission path

When the number of data errors is "02":

Press the

ON/OFF

button (D in the picture in the previous page) 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.

Press the

CHECK

button (H in the picture in the previous page.) → Self-diagnosis will be cancelled and the screen will return to the previous state in effect

before the start of self-diagnosis.

Press the

ON/OFF

button (D in the picture in the previous page.) → 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.

Press the

CHECK

button (H in the picture in the previous page)

for 5 seconds or more. The display content will change as shown below.

Press the

FILTER

button (A in the picture in the previous page)

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

Press the

CHECK

button (H in the picture in the previous page) 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

twice within 3 seconds.

to start self-diagnosis.

9-3-5. Remote controller check <PAR-21MAA>

OCH671

• "CHECK" lights, and refrigerant address

"00" flashes.

• Check that the remote controller's

display has stopped before continuing.

• Select the refrigerant address of the

indoor unit for the self-diagnosis.

Note: Set refrigerant address using the

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

• If an air conditioner error occurs, the

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

• The check mode is cancelled.

[Procedure]

1. Press the CHECK button twice.

2. Press the temperature buttons.

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

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

<Malfunction-diagnosis method at maintenance service>

9-3-6. Self-diagnosis <Wireless remote controller>

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

ON/OFF

TEMP

FAN

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

+ 78 hidden pages

Mitsubishi PUHZ-SP100YKA, PUHZ-SP125VKA.TH, PUHZ-SP125YKA, PUHZ-SP125YKA.TH, PUHZ-SP140YKA.TH Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual