Mitsubishi Electric PUHZ-W60VAA Manuale utente

SERVICE MANUAL

No. OCH681

REVISED EDITION-A

R410A

October 2018

PARTS CATALOG (OCB681)

[Model Name]

PUHZ-W60VAA

PUHZ-W85VAA

PUHZ-W112VAA

PUHZ-W85YAA

PUHZ-W112YAA

Salt proof model

PUHZ-W60VAA-BS

PUHZ-W85VAA-BS

PUHZ-W112VAA-BS

PUHZ-W85YAA-BS

PUHZ-W112YAA-BS

CONTENTS

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

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

3. SPECIFICATIONS ········································ 5

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

5. OUTLINES AND DIMENSIONS···················· 8

6. WIRING DIAGRAM······································· 9

7. WIRING SPECIFICATIONS ························ 11

8. REFRIGERANT SYSTEM DIAGRAM ········ 12

9. TROUBLESHOOTING································ 14

10.

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

···· 51

11. DISASSEMBLY PROCEDURE··················· 57

Note:

• This manual describes

service data of the outdoor

units only.

OCH681 is void.

Revision:

• PUHZ-W60VAA.UK,

PUHZ-W60VAA-BS.UK,

PUHZ-W85VAA-BS.UK,

PUHZ-W112VAA-BS.UK,

PUHZ-W85YAA-BS.UK and

PUHZ-W112YAA-BS.UK

have been added.

• Some descriptions have

been modified.

AIR TO WATER HEAT PUMP UNITS

[Service Ref.]

PUHZ-W60VAA.UK

PUHZ-W85VAA.UK

PUHZ-W112VAA.UK

PUHZ-W85YAA.UK

PUHZ-W112YAA.UK

PUHZ-W60VAA-BS.UK

PUHZ-W85VAA-BS.UK

PUHZ-W112VAA-BS.UK

PUHZ-W85YAA-BS.UK

PUHZ-W112YAA-BS.UK

OCH681A

INDOOR UNIT SERVICE MANUAL

1-1. FOR AIR TO WATER SYSTEM

Model name Service ref. Service

manual No.

EHPT20X-VM2HB

EHPT20X-VM6HB

EHPT20X-YM9HB

EHPT20X-TM9HB

EHPT20X-VM6B

EHPT20X-YM9B

EHPT20X-VM2HB.UK

EHPT20X-VM6HB.UK

EHPT20X-YM9HB.UK

EHPT20X-TM9HB.UK

EHPT20X-VM6B.UK

EHPT20X-YM9B.UK

OCH531

OCB531

EHPX-VM2B

EHPX-VM6B

EHPX-YM9B

EHPX-VM2B.UK

EHPX-VM6B.UK

EHPX-YM9B.UK

OCH532

OCB532

EHPX-VM2C

EHPX-VM6C

EHPX-YM9C

EHPX-VM2CR2.UK

EHPX-VM6CR2.UK

EHPX-YM9CR2.UK

OCH571

OCB571

EHPT20X-VM2C

EHPT20X-VM6C

EHPT20X-YM9C

EHPT20X-TM9C

EHPT20X-MHCW

EHPT20X-VM2C2

EHPT20X-VM2CR2.UK

EHPT20X-VM6CR2.UK

EHPT20X-YM9CR2.UK

EHPT20X-TM9CR2.UK

EHPT20X-MHCWR2.UK

EHPT20X-VM2C2R2.UK

OCH570

OCB570

PAC-IF011B-E

PAC-IF032B-E

PAC-IF011B-E

PAC-IF032B-E OCB427

PAC-IF061B-E PAC-IF061B-ER2 OCB572

PAC-SIF051B-E PAC-SIF051B-ER2 OCB536

1REFERENCE MANUAL

OCH681A

2SAFETY PRECAUTION

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Cautions for units utilizing refrigerant R410A

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.

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.

Electronic refrigerant charging scale

Vacuum pump adaptor

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.

2-1. ALWAYS OBSERVE FOR SAFETY

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

Preparation before the repair service.

• Prepare the proper tools.

• Prepare the proper protectors.

• Provide adequate ventilation.

• After stopping the operation of the heat pump units, 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.

2SAFETY PRECAUTION

OCH681A

Electronic weighing scale

Unit

[3] Service tools

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

[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 service, ensure to remove them.

[2] Additional refrigerant charge

When charging directly from cylinder

(1) Check that cylinder for R410A on the market is a syphon type.

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

No. Tool name Specifications

1Gauge manifold

· Only for R410A

· Use the existing fitting specifications. (UNF1/2)

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

2Charge hose · Only for R410A

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

3Electronic weighing scale —

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

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

6Refrigerant charge base —

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

· Cylinder with syphon

8Refrigerant recovery equipment —

OCH681A

3SPECIFICATIONS

Service Ref. PUHZ-W85VAA.UK

PUHZ-W85VAA-BS.UK

PUHZ-W85YAA.UK

PUHZ-W85YAA-BS.UK

OUTDOOR UNIT

Power source (Phase, cycle, voltage) Single, 50 Hz, 230 V 3-Phase, 50 Hz, 400 V

Max. current A 22.0 11.5

External nish Munsell: N8.75

Munsell N2.75 (FRONT PANEL)

Refrigerant control Linear Expansion Valve

Compressor Hermetic

Model SNB220FEGMC-L1 SNB220FEAMC-L1

Motor output kW 1.5

Starter type Inverter

Protection devices HP switch, Comp. surface thermo

Discharge thermo, Over current detection

Crankcase heater W —

Heat exchanger Plate n coil

Fan Fan (drive) × No. Propeller fan x 1

Fan motor output

kW 0.074

Airow

K/min (CFM)

44 (1,550)

Defrost method Reverse cycle

(PWL)Sound power level Heating dB 58

Dimensions W mm (inch) 1050 (41-5/16)

D mm (inch) 480 (18-7/8)

H mm (inch) 1020 (40-3/16)

Weight kg (lb) 97 (214) 110 (243)

Refrigerant R410A

Charge kg (lb) 2.4 (5.3)

Oil (Model) L 0.60 (FV50S)

Water pipe connection G1 (ISO 228/1)

Service Ref. PUHZ-W60VAA.UK

PUHZ-W60VAA-BS.UK

OUTDOOR UNIT

Power source (Phase, cycle, voltage) Single, 50 Hz, 230 V

Max. current A 13.0

External nish Munsell: N8.75

Munsell N2.75 (FRONT PANEL)

Refrigerant control Linear Expansion Valve

Compressor Hermetic

Model SNB220FEGMC-L1

Motor output kW 1.5

Starter type Inverter

Protection devices HP switch, Comp. surface thermo

Discharge thermo, Over current detection

Crankcase heater W —

Heat exchanger Plate n coil

Fan Fan (drive) × No. Propeller fan x 1

Fan motor output

kW 0.074

Airow

K/min (CFM)

44 (1,550)

Defrost method Reverse cycle

(PWL)Sound power level Heating dB 58

Dimensions W mm (inch) 1050 (41-5/16)

D mm (inch) 480 (18-7/8)

H mm (inch) 1020 (40-3/16)

Weight kg (lb) 97 (214)

Refrigerant R410A

Charge kg (lb) 2.4 (5.3)

Oil (Model) L 0.60 (FV50S)

Water pipe connection G1 (ISO 228/1)

OCH681A

Service Ref. PUHZ-W112VAA.UK

PUHZ-W112VAA-BS.UK

PUHZ-W112YAA.UK

PUHZ-W112YAA-BS.UK

OUTDOOR UNIT

Power source (Phase, cycle, voltage) Single, 50 Hz, 230 V 3-Phase, 50 Hz, 400 V

Max. current A 28.0 13.0

External nish Munsell: N8.75

Munsell N2.75 (FRONT PANEL)

Refrigerant control Linear Expansion Valve

Compressor Hermetic

Model DNB28FBAMT DNB28FBBMT

Motor output kW 2.2

Starter type Inverter

Protection devices HP switch, LP switch, Comp. surface thermo

Discharge thermo, Over current detection

Crankcase heater W —

Heat exchanger Plate n coil

Fan Fan (drive) × No. Propeller fan x 1

Fan motor output

kW 0.2

Airow

K/min (CFM)

50 (1,760)

Defrost method Reverse cycle

(PWL)Sound power level

Heating dB 60

Dimensions W mm (inch) 1050 (41-5/16)

D mm (inch) 480 (18-7/8)

H mm (inch) 1020 (40-3/16)

Weight kg (lb) 118 (260) 131 (289)

Refrigerant R410A

Charge kg (lb) 3.3 (7.3)

Oil (Model) L 1.0 (FVC68D)

Water pipe connection G1 (ISO 228/1)

OCH681A

4DATA

4-1. COMPRESSOR TECHNICAL DATA

Service Ref. PUHZ-W60VAA.UK

PUHZ-W60VAA-BS.UK

PUHZ-W85VAA.UK

PUHZ-W85VAA-BS.UK

PUHZ-W85YAA.UK

PUHZ-W85YAA-BS.UK

PUHZ-W112VAA.UK

PUHZ-W112VAA-BS.UK

PUHZ-W112YAA.UK

PUHZ-W112YAA-BS.UK

Compressor model SNB220FEGMC-L1 SNB220FEGMC-L1 SNB220FEAMC-L1 DNB28FBAMT DNB28FBBMT

Winding

Resistance (Ω)

U-V 0.95 0.95 1.65 0.74 0.94

U-W 0.95 0.95 1.65 0.74 0.94

W-V 0.95 0.95 1.65 0.74 0.94

(at 20:)

4-2. NOISE CRITERION CURVES

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

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

µbar)

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

BAND CENTER FREQUENCIES, Hz

COOLING

MODE

HEATING

SPL(dB)

LINE

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

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

µbar)

63 125 250 500 1000 2000 4000 8000

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

BAND CENTER FREQUENCIES, Hz

COOLING

MODE

HEATING

SPL(dB)

LINE

1.5 m

1 m

MICROPHONE

UNIT

GROUND

PUHZ-W112VAA.UK PUHZ-W112VAA-BS.UK

PUHZ-W112YAA.UK PUHZ-W112YAA-BS.UK

PUHZ-W60VAA.UK PUHZ-W60VAA-BS.UK

PUHZ-W85VAA.UK PUHZ-W85VAA-BS.UK

PUHZ-W85YAA.UK PUHZ-W85YAA-BS.UK

OCH681A

5OUTLINES AND DIMENSIONS

PUHZ-W60VAA.UK PUHZ-W85VAA.UK PUHZ-W112VAA.UK

PUHZ-W60VAA-BS.UK PUHZ-W85VAA-BS.UK PUHZ-W112VAA-BS.UK

PUHZ-W85YAA.UK PUHZ-W112YAA.UK

PUHZ-W85YAA-BS.UK PUHZ-W112YAA-BS.UK

Unit: mm

OCH681A

6WIRING DIAGRAM

C. B.

21S4

X51

X52

31 21S4

(GN)

SV3/SS

(WH)

X54

31 SV1/CH

(GY)

5CNF1(WH)

MF1

63H

t°

51LEV-A

(WH)

63H

(YE)

TH33

(YE)

1 2

t°

t° t°

TH3

(WH)

TH7/6

(RD)

LEV-A

51LEV-B

(RD)

LEV-B

2 1

t°

TH4

(WH)

2 1

t°

TH34

(RD)

63L

(RD)

63HS

(WH)

W112

only

TRANS

TH33 TH7 TH6 TH3 63HS

CN4

(WH)

1 3

CNDC

(PK)

CNS

(WH)

CNAC

(WH)

1 3

CNDM

(WH)

1 2

3 4

CN2

(RD)

SW4 SW8

SW1

SW9 SW7

SW6

SW5

1 7

SW2

SYMBOL NAME SYMBOL NAME

TB1

MF1

21S4

63H

63L

63HS

TH3

TH4

TH6

TH7

TH8

TH33

TH34

LEV-A, LEV-B

DCL1, DCL2, DCL3

Terminal Block <Power Supply, Indoor/Outdoor>

Motor for Compressor

Fan Motor

Solenoid Valve (4-Way Valve)

High Pressure Switch

Low Pressure Switch

High Pressure Sensor

Thermistor <Liquid>

Thermistor <Discharge>

Thermistor <Plate Hex Liquid>

Thermistor <Ambient>

Thermistor <Heat Sink>

Thermistor <Comp. Surface>

Thermistor <Inlet Water>

Linear Expansion Valve

Reactor

CY1, CY2

P. B.

C. B.

Capacitor

Power Circuit Board

Controller Circuit Board

Switch <Manual Defrost, Defect History

Record Reset, Refrigerant Address>

Switch <Function Switch>

Switch <Function Switch, Model Select>

Switch <Function Switch>

Connector <Connection for Option>

Fuse <T6.3AL250V>

SW1

SW2

SW4

SW5

SW6

SW7

SW8

SW9

CNDM

SV1/CH

SV3/SS

F1, F2, F3, F4

P. B.

INDOOR UNIT

OG BNYE

L N S1 S2 S3 TB1

POWER SUPPLY

~/N

230V 50Hz

RD BU

CNAC2

(RD)

CNAC1

(WH)

LI NI

IC600

CY1

CY2

DCL1

DCL3

3131

TB1A

TB3A

TB1B

TB3B

CNDC

(PK)

1 2

t°

TH8

CN6

(WH)

1 7

CN2

(RD)

CN4

(WH)

WIC500

GNYE

TB2B

DCL2

TB2A

RD WH

1 2 3 4 5 6 7

OFF

60V

MODEL

SW6 *2

81 2 3 4 5 6 7

OFF

85V

OFF

112V

*1 MODEL SELECT

The black square ( ) indicates

a switch position.

*2 SW6 -1 to 3 : Function Switch

LED3

PUHZ-W60VAA.UK PUHZ-W85VAA.UK PUHZ-W112VAA.UK

PUHZ-W60VAA-BS.UK PUHZ-W85VAA-BS.UK PUHZ-W112VAA-BS.UK

OCH681A

1 2 3 4 5 6 7

OFF

85Y

MODEL

SW6 *2

OFF

112Y

*1 MODEL SELECT

The black square ( ) indicates

a switch position.

*2 SW6 -1 to 3 : Function Switch

TB1

TB2

MF1

21S4

63H

63L

63HS

TH3

TH4

TH6

TH7

TH8

TH33

TH34

LEV-A, LEV-B

ACL1, ACL2,

ACL3, ACL4

CY1, CY2

Terminal Block <Power Supply>

Terminal Block <Indoor/Outdoor>

Motor for Compressor

Fan Motor

Solenoid Valve (4-Way Valve)

High Pressure Switch

Low Pressure Switch

High Pressure Sensor

Thermistor <Liquid>

Thermistor <Discharge>

Thermistor <Plate Hex Liquid>

Thermistor <Ambient>

Thermistor <Heat Sink>

Thermistor <Comp. Surface>

Thermistor <Inlet Water>

Linear Expansion Valve

Reactor

Capacitor

Rush Current Protect Resistor

SW1

SW2

SW4

SW5

SW6

SW7

SW8

SW9

CNDM

SV1/CH

SV3/SS

F1, F2,

F3, F4

P. B.

N. F.

CONV. B.

C. B.

Power Circuit Board

Noise Filter Circuit Board

Converter Circuit Board

Controller Circuit Board

Switch <Manual Defrost,

Defect History Record Reset,

Refrigerant Address>

Switch <Function Switch>

Switch <Function Switch,

Model Select>

Switch <Function Switch>

Connector <Connection for Option>

Fuse <T6.3AL250V>

SYMBOL NAME SYMBOL NAME

P. B.

N. F.

t°

C. B.

21S4

X51

X52

31 21S4

(GN)

SV3/SS

(WH)

X54

31 SV1/CH

(GY)

5CNF1(WH)

MF1

63H

t°

51LEV-A

(WH)

63H

(YE)

TH33

(YE)

1 2

t°

t° t°

TH3

(WH)

TH7/6

(RD)

LEV-A

51LEV-B

(RD)

LEV-B

2 1

t°

TH4

(WH)

63L

(RD)

63HS

(WH)

W112

only

TRANS

TH33 TH7 TH6 TH3

2 1

t°

TH34

(RD)

TH34

63HS

CN4

(WH)

1 3

TH8

CNDC

(PK)

CNS

(WH)

CNAC

(WH)

1 3

CNDM

(WH)

1 2

3 4

CN2

(RD)

CNL

(BU)

CNDC

(PK)

3 131

3272

1 1 1 1 13 2 2 7 2

CN7

(WH)

CN6

(WH)

CN4

(WH)

CN2

(RD)

CN5

(RD)

L3OUT

X52CB

TB-L3

L3IN

TB-L2

TB-N

TB-L1

X52CA

TB-U

TB-V

TB-W

U W

CNCT

(RD)

CNAC2

(RD)

CNAC1

(WH)

1 13 2 3

E3E2EI

LI1

LI2

LI3

GNYE

CONV. B.

ACL1

ACL2

ACL3

L1-A2

L1-OU

L2-A2

L2-OU

L3-A2

L3-OU

L1-IN

L1-A1

N-IN

CK-OU

LO1

LO2

LO3 BK

NO BU

CN7

(WH)

ACL4

TB1

INDOOR

UNIT

POWER

SUPPLY

3N~

400V 50Hz

TB2

BN OG YE

CY1

CY2

1 7

SW1

SW9 SW7

SW6

SW4 SW8 SW5

SW2

LED3

PUHZ-W85YAA.UK PUHZ-W112YAA.UK

PUHZ-W85YAA-BS.UK PUHZ-W112YAA-BS.UK

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