Mitsubishi Electric MU-A08VD-P1 Manuel utilisateur

SERVICE MANUAL

CONTENTS

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

2. PART NAMES AND FUNCTIONS······················2

3. SPECIFICATION·················································3

4. OUTLINES AND DIMENSIONS ·························4

5. WIRING DIAGRAM ············································4

6. REFRIGERANT SYSTEM DIAGRAM················5

7. PERFORMANCE CURVES································6

8. TROUBLESHOOTING········································8

9. DISASSEMBLY INSTRUCTIONS·····················11

10. PARTS LIST······················································16

11. OPTIONAL PARTS···········································18

Wireless type

Models

SPLIT-TYPE, AIR CONDITIONERS

MU-A08VD-

MU-A10VD-

MU-A13VD- P1

No. OB397

MU-A08VD -

MU-A10VD -

MU-A13VD - P1

Indication of

model name

NOTE:

• This service manual describes technical data of outdoor units.

• As for indoor units MS-A08VD - ,MS-A10VD - and MS-A13VD - , refer to the service manual OB396.

P1P1P1

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PART NAMES AND FUNCTIONS

TECHNICAL CHANGES1

MU-07UV - ➔MU-A08VD -

1. Outdoor unit model has been changed.

•Dimension has been changed. (780Wo540Ho255D ➔800Wo550Ho285D)

•Valve bed has been added.

2. Compressor has been changed. (RH135VGCC ➔RH135VHCC)

3. Outdoor fan motor has been changed. (RA6V23-HA ➔RA6V21-AC)

4. Outdoor fan motor capacitor has been changed.

5. Compressor capacitor has been changed.

MU-10UV - ➔MU-A10VD -

1. Outdoor unit model has been changed.

•Dimension has been changed. (780Wo540Ho255D ➔800Wo550Ho285D)

•Valve bed has been added.

2. Compressor has been changed. (RH165VGCC ➔RH145VHCC)

3. Outdoor fan motor has been changed. (RA6V23-HA ➔RA6V21-AC)

4. Outdoor fan motor capacitor has been changed.

5. Compressor capacitor has been changed.

MU-13UV - ➔MU-A13VD -

1. Outdoor unit model has been changed.

•Dimension has been changed. (780Wo540Ho255D ➔800Wo550Ho285D)

•Valve bed has been added.

2. Compressor has been changed. (RH231VHAC ➔RH207VHAC)

3. Outdoor fan motor has been changed. (RA6V33-FA ➔RA6V33-KA)

4. Outdoor fan motor capacitor has been changed.

5. Compressor capacitor has been changed.

P1P1

OUTDOOR UNIT

MU-A08VD -

MU-A10VD -

MU-A13VD - P1

Air inlet

Piping

Drain hose

Air outlet

Drain outlet

(back )

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SPECIFICATION

Outdoor model

Function

Power supply

Coefficient of performance (C.O.P)

Capacity

Dehumidification

Air flow

Starting current

Compressor motor current

Fan motor current

Model

Output

Winding

resistance (at20:)

Model

Winding

resistance (at20:)

Dimensions WOHOD

Weight

Sound level

Fan speed

Fan speed regulator

Refrigerant filling

capacity (R22)

Refrigeration oil (Model)

R/h

K/h

rpm

MU-A13VD - P1

3.7-3.7-3.7

1.7

1848-1872-1896

28-29.5-31

4.53-4.52-4.51

0.33-0.34-0.35

3.36-3.36-3.36

RH207VHAC

1000

C-R 2.59

C-S 3.94

RA6V33-KA

WHT-BLK 215

BLK-RED 307

47-47-48

835-845-855

1.05

520 (MS56)

Electrical

data

Fan

motor

Special

remarks Compressor

Capacity

MU-A08VD - P1

2.3-2.3-2.3

1.0

17-18-19

2.85-2.85-2.84

3.24-3.24-3.24

RH135VHCC

650

C-R 4.18

C-S 5.76

MU-A10VD - P1

2.75-2.75-2.75

1.2

18-19-20

3.22-3.22-3.21

3.46-3.46-3.46

RH145VHCC

700

C-R 4.03

C-S 5.71

1740-1800-1860

0.24-0.25-0.25

RA6V21-AC

WHT-BLK 347

BLK-RED 281

44-45-46

725-745-770

0.55

300 (MS56)

Cooling

Single phase

220-230-240V, 50Hz

800o550o285

NOTE: Test conditions are based on JIS C 9612.

Cooling : Indoor DB27°C / WB19°C

Outdoor DB35°C / WB24°C

Indoor-Outdoor piping length 5 m

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WIRING DIAGRAM

OUTDOOR UNIT

220-230-240V~

BLU

WHT

RED

WHT

BLU

WHT

BLK

RED

TO INDDOR UNIT CONNECTING

SMC

2BLK

RED

WHT MF

MU-A08VD -

MU-A10VD -

MU-A13VD - P1

SYMBOL

NAME NAME NAME

COMPRESSOR CAPACITOR

OUTDOOR FAN CAPACITOR

COMPRESSOR (INNER PROTECTOR)

OUTDOOR FAN MOTOR (INNER FUSE

)

TERMINAL BLOCK

MODEL WIRING DIAGRAM

OUTLINES AND DIMENSIONS4

Unit : mm

OUTDOOR UNIT

MU-A08VD -

MU-A10VD -

MU-A13VD - P1

800

302.5

500 Bolt pitch for installation

150

22.3

Handle

550

280

164.5

99.5

170.5

23 Service panel

Service port

285

344.5

400

Air in

Air out

Air in

17.5

Bolt pitch for

installation

304~325

Liquid refrigerant pipe joint

Refrigerant pipe (flared) [6.35

Gas refrigerant pipe joint

Refrigerant pipe (flared) [9.52 (MU-A08/A10VD)

Refrigerant pipe (flared) [12.7 (MU-A13VD)

43-

35-

2 holes 10X21

REQUIRED SPACE Basically open 100mm or more

without any obstruction in front

and on both sides of the unit.

350mm or more

200mm or more

100mm or more

Open two sides of left,

right, or rear side.

Drain hole [42

NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.

2. Use copper conductors only. (For field wiring)

3. Symbols below indicate.

/: Terminal block, : Connector

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REFRIGERANT SYSTEM DIAGRAM

OUTDOOR UNIT

Capillary tube

{3.0 x {1.6x650

Stop valve

(with service port)

Stop valve

Compressor Strainer

#100

Outdoor heat

exchanger

Refrigerant pipe

(Option){6.35

(with heat insulator)

Refrigerant pipe

(Option){12.7

(with heat insulator)

Flared

connection

Flared

connection

Refrigerant flow in cooling

MU-A08VD -

MU-A10VD - P1

OUTDOOR UNIT

Refri

erant flow in coolin

Capillary tube

{3.0 x {1.6 x 850

Compressor

Stop valve

(with service port)

Stop valve

Strainer

#100

Outdoor

heat

exchanger

Refrigerant pipe

(Option){6.35

(with heat insulator)

Refrigerant pipe

(Option){9.52

(with heat insulator)

Flared

connection

Flared

connection

Unit : mm

MU-A13VD - P1

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MAX.REFRIGERANT PIPING LENGTH

Model Piping size O.D : mm

Refrigerant piping : m

Gas

{9.52

{12.7

Liquid

{6.35

MU-A08VD - P1

MU-A10VD - P1

MU-A13VD - P1

Max. length

AMax. height

Indoor

unit

w Max. Height

Outdoor unit

Refrigerant Piping

Max. Length

MAX.HEIGHT DIFFERENCE

ADDITIONAL REFRIGERANT CHARGE(R22 : g)

NOTE : Calculation : Xg=15g/m ✕ (Refrigerant piping length (m)-7)

Model Outdoor unit precharged Refrigerant piping length (one way)

15m

120

20m

195

10m

550

1050

MU-A08VD - P1

MU-A10VD - P1

MU-A13VD - P1

PERFORMANCE CURVES7

The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.

Since operating conditions vary according to the areas where these units are installed. The following information has been

provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.

(1) GUARANTEED VOLTAGE

198 ~ 264V, 50Hz

(2) AIR FLOW

Air flow should be set at MAX.

(3) MAIN READINGS

(1) Indoor intake air wet-bulb temperature : °CWB

(2) Indoor outlet air wet-bulb temperature : °CWB

(3) Outdoor intake air dry-bulb temperature : °CDB

(4) Total input: W

Indoor air wet/dry-bulb temperature difference on the left side of the chart on next page shows the difference between the

indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.

MU-A08VD -

MU-A10VD -

MU-A13VD - P1

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1Both indoor and outdoor units are under the same temperature/humidity condition.

OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT

COOL operation

2Air flow should be set at MAX.

Dry-bulb temperature (:)Relative humidity (%)

20 50

25 60

30 70

3The unit of pressure has been changed to MPa on the international system of units(SI unit system).

The conversion factor is : 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])

Indoor intake air WB temperature (:)

Outdoor intake air DB temperature (:)

Indoor intake air WB temperature (:)

Outdoor intake air DB temperature (:)

MS-A10VD - P1

MS-A13VD - P1

MU-A10VD - P1

MS-A08VD - P1

MU-A08VD - P1

MU-A13VD - P1

4.8

4.3

5.4

7.0

6.5

5.9

7.5

6.7

8.4

11.2

10.2

9.3

Wet-and dry-bulb

thermometers

Wet and dry-bulb

thermometers

How to measure the indoor air wet/dry-bulb temperature difference

1. Attach at least 2 sets of wet and-dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets

of wet and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air

speed is high.

2. Attach at least 2 sets of wet and dry-bulb thermometers to the outdoor air intake.

Cover the thermometers to prevent direct rays of the sun.

3. Check that the air filter is cleaned.

4. Open windows and doors of the room.

5. Press the EMERGENCY OPERATION switch once to start the EMERGENCY COOL MODE.

6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.

7. 10 minutes later, measure temperature again and check that the temperature does not change.

INDOOR UNIT OUTDOOR UNIT

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15 20

50 25

60 30

70 35(:)

(%)

0.4

0.5

0.6

0.7

0.8

220V

4.0

5.0

6.0

7.0

8.0

9.0 0.9

15 20

50 25

60 30

70 35(:)

(%)

2.0

2.5

3.0

3.5

4.0

220V

MU-A08VD -

MU-A10VD - P1

MU-A08VD -

MU-A10VD - P1

Outdoor low pressure

Outdoor unit current (A)

(kgf/F[Gauge])(MPa [Gauge])

Ambient temperature (˚C)/Ambient humidity (%) Ambient temperature (˚C)/Ambient humidity (%)

15 20

50 25

60 30

70 35(:)

(%)

0.3

0.4

0.5

0.6

0.7

15 20

50 25

60 30

70 35(:)

(%)

7.0

6.0

5.0

4.0

3.0

220V 220V

Ambient temperature (˚C)/Ambient humidity (%)

Outdoor low pressure

Ambient temperature (˚C)/Ambient humidity (%)

Outdoor unit current (A)

MU-A13VD - P1 MU-A13VD - P1

(kgf/F[Gauge])(MPa [Gauge])

TROUBLESHOOTING8

8-1. Cautions on troubleshooting

1. Before troubleshooting, check the following:

1) Check the power supply voltage.

2) Check the indoor/outdoor connecting wire for mis-wiring.

2. Take care the following during servicing.

1).Before servicing the air conditioner, be sure to turn off the main unit first with the remote controller, and then after con-

firming the horizontal vane is closed, turn off the breaker and / or disconnect the power plug.

2) Be sure to turn OFF the power supply before removing the front panel,

the cabinet, the top panel and the electronic control P.C. board.

3) When removing the electronic control P.C. board, hold the edge of the

board with care NOT to apply stress on the components.

4) When connecting or disconnecting the connectors, hold the housing of the

connector. DO NOT pull the lead wires.

MU-A08VD - MU-A10VD - MU-A13VD - P1P1P1

Lead wiring Housing point

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Start

Indoor unit

operates.

Outdoor unit

doesn't

operate.

Indoor unit

doesn't receive

the signal from

remote controller.

OPERATION INDICATOR

lamp on the indoor unit is

flashing on and off.

Outdoor unit

operates in

only Test Run

operation.

Outdoor unit

doesn't

operate

even in

Test Run

operation.

Indoor unit

operates, when

the EMERGENCY

OPERATION

switch is pressed.

Indoor unit

doesn't operate,

when the

EMERGENCY

OPERATION

switch is pressed.

Check room

temperature

thermistor.

Refer to

"Test point

diagram and

voltage".

Check of 5.

wiring

diagram

of outdoor

unit.

Refer to

"Check of

remote controller

and receiver

P.C. board".

Left lamp

2-time flash

Cause:

Indoor unit

• Trouble of room

temperature/

indoor coil

thermistor

Left lamp

3-time flash

Cause:

Indoor unit

• Trouble of

indoor fan

motor

Check room

temperature

thermistor and

indoor coil thermistor.

Refer to

"Test point diagram

and voltage".

Refer to

"Check of

indoor fan

motor".

1. Check indoor /

outdoor

connecting wire.

2. Refer to

"Check of indoor

electronic control

P.C. board".

Left lamp

4-time flash

Cause:

Indoor unit

• Trouble of

indoor control

system

Replace the

indoor

electronic

control P.C.

board.

As for indoor unit,

refer to service

manual OB396.

Both lamps

(Left and right)

Flash on and off at

0.5-second intervals

Cause:

Indoor unit

• The horizontal vanes

are not installed

correctly.

Refer to "Check of

installation of the

horizontal vane".

8-2. Instruction of troubleshooting

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Outdoor fan

motor (MF)

INNER FUSE

149i 3:OPEN

Measure the resistance between the terminals with a tester.

(Coil wiring temperature -10°C ~ 40°C)

Color of

lead wire Normal Abnormal

Open or

short-circuit

WHT-BLK

BLK-RED 189 ~ 233 "

270 ~ 332 "

MU-A13VD

305 ~ 374 "

247 ~ 304 "

MU-A08/A10VD

WHT

RED

BLK

AUX.

MAIN

FUSE

Compressor

(MC)

INNER

PROTECTOR

MU-A08/A10VD

150i 5:OPEN

90i10:CLOSE

MU-A13VD

155i 5:OPEN

90i10:CLOSE

8-3. Trouble criterion of main parts

Part name Check method and criterion

Measure the resistance between the terminals with a tester.

(Coil wiring temperature -10°C ~ 40°C)

Figure

RED

WHT

BLK

S R

Color of

lead wire

Normal MU-A13VD

2.0 ~ 2.8 "

3.0 ~ 4.25 "

C-R

C-S

Abnormal

Open or

short-circuit

MU-A08VD

3.0 ~ 4.51 "

5.0 ~ 6.22 "

MU-A10VD

3.0 ~ 4.35 "

5.0 ~ 6.16 "

PP:INNER PROTECTOR

MU-A08VD -

MU-A10VD -

MU-A13VD - P1

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