Mitsubishi Electric MU-A08ND-c1 Manuale utente

SERVICE MANUAL

CONTENTS

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

2. PART NAMES AND FUNCTIONS······················3

3. SPECIFICATION·················································4

4. OUTLINES AND DIMENSIONS ·························5

5. WIRING DIAGRAM ············································8

6. REFRIGERANT SYSTEM DIAGRAM················9

7. PERFORMANCE CURVES······························12

8. TROUBLESHOOTING······································15

9. DISASSEMBLY INSTRUCTIONS ····················17

10. PARTS LIST······················································25

11. RoHS PARTS LIST···········································29

12. OPTIONAL PARTS···········································33

Wireless type

Models

SPLIT-TYPE, AIR CONDITIONERS

MU-A08ND-

MU-A10ND-

MU-A12ND-

MU-A15ND-

MU-A15ND- C2

MU-A10ND

MU-A12ND

Revision:B

• MU-A10ND - has been added.

• RoHS PARTS LIST has been added.

Please void OB403 REVISED EDITION-A.

NOTE:

This service manual describes technical data of outdoor units.

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

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

OUTDOOR UNIT

Indoor unit service manual

MS-A•ND Series (OB402)

No. OB403

REVISED EDITION-B

OB403B--1.qxp 07.6.26 10:28 AM Page 1

TECHNICAL CHANGES1

MU-09SN - ➔MU-A08ND -

1. Compressor has been changed. (RH-130NGDT ➔2R10S3R236A-6B)

2. Outdoor fan motor has been changed. (RA6N23-AA ➔RA6N33-AA)

3. Compressor capacitor has been changed.

4. Outdoor fan motor capacitor has been changed.

MU-10SN - ➔MU-A10ND -

1. Outdoor unit model has been changed.

•Valve cover has been added.

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

2. Compressor has been changed. (RH145NGCT ➔RH145NHNT)

3. Outdoor fan motor has been changed. (RA6N33-AA ➔RA6N21-AB)

4. Compressor capacitor has been changed.

5. Outdoor fan motor capacitor has been changed.

6. Outdoor heat exchanger has been changed. ([9.52 L-Bend ➔[7 Flat)

MU-12SN - ➔MU-A12ND -

1. Outdoor unit model has been changed.

•Valve cover has been added.

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

2. Compressor has been changed. (RH167NHDT ➔RH174NHNT)

3. Outdoor fan motor has been changed. (RA6N33-AA ➔RA6N30-BA)

4. Compressor capacitor has been changed.

5. Outdoor fan motor capacitor has been changed.

6. Outdoor heat exchanger has been changed. ([9.52 L-Bend ➔[7 Flat)

MU-15SN - ➔MU-A15ND -

1. Compressor has been changed. (RH-207NHDT ➔RH207NRAT)

2. Outdoor fan motor has been changed. (RN6N50-BA ➔RA6V60-MA)

3. Compressor capacitor has been changed.

4. Outdoor fan motor capacitor has been changed.

MU-A08ND - ➔MU-A08ND -

MU-A15ND - ➔MU-A15ND -

1. Valve cover has been added.

MU-A10ND - ➔MU-A10ND -

1. Outdoor heat exchanger has been changed.

2. Capillary tube has been changed.

C2C1

C1C2

Revision A:

• MU-A08ND - and MU-A15ND - have been added.

C2C2

Revision B:

• MU-A10ND - has been added.

• RoHS PARTS LIST has been added.

OB403B--1.qxp 07.6.26 10:28 AM Page 2

PART NAMES AND FUNCTIONS

OUTDOOR UNIT

MU-A08ND

MU-A15ND

Air inlet

Piping

Drain hose

Air outlet

Drain outlet

(back and side)

MU-A10ND

MU-A12ND

Air inlet

Piping

Drain hose

Air outlet

Drain outlet

back and side : MU-A10ND

back : MU-A12ND

()

Air inlet

Piping

Drain hose

Air outlet

Drain outlet

(back and side)

OB403B--1.qxp 07.6.26 10:28 AM Page 3

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 (at 20:)

Model

Winding

resistance (at 20:)

Dimensions WOHOD

Weight

Sound level

Fan speed

Fan speed regulator

Refrigerant filling

capacity (R22)

Refrigeration oil (Model)

R/h

K/h

rpm

MU-A15ND

4.0

1.8

2280

5.62

0.5

2.97

RH207NRAT

1000

C-R 1.50

C-S 2.33

RA6V60-MA

WHT-BLK 116

BLK-RED 111

850o605o290

865

1.6

520 (MS56)

Electrical

data

Fan

motor

Special

remarks Compressor

Capacity

MU-A08ND

2.2

0.5

1656

2.39

0.36

3.44

2R10S3R236A-6B

470

C-R 4.09

C-S 5.58

RA6N33-AA

WHT-BLK 150

BLK-RED 265

780o540o255

700

0.8

260 (ATM0S M60)

MU-A10ND

2.9

1.2

1896

3.86

0.26

3.12

RH145NHNT

700

C-R 2.74

C-S 3.78

RA6N21-AB

WHT-BLK 384

BLK-RED 259

820

0.6

1.1

300 (MS56)

MU-A12ND

3.6

1.7

1884

4.95

0.35

3.08

RH174NHNT

800

C-R 2.19

C-S 3.3

RA6N30-BA

WHT-BLK 312

BLK-RED 255

850

1.2

520 (MS56)

Cooling

Single phase

220-230V, 60Hz

800o550o285

NOTE: Test conditions are based on CNS14464, ISO5151.

Cooling : Indoor DB27°C / WB19°C

Outdoor DB35°C / WB24°C

Indoor-Outdoor piping length: 5 m

OB403B--1.qxp 07.6.26 10:28 AM Page 4

320

43-

35-

104

320

285

255

Service panel

Gas refrigerant

pipe joint

Refrigerant pipe

(flared) [9.52

Liquid refrigerant

pipe joint

Refrigerant pipe

(flared) [6.35

Airout

Air in

Service port

155

260

780

500

122

540 109 32

110

147

Drainage

3 holes [33

OUTLINES AND DIMENSIONS4

Unit : mm

100mm or more

350mm or more

REQUIRED SPACE

400mm or more

OUTDOOR UNIT

MU-A08ND - C1

Unit : mm

OUTDOOR UNIT

MU-A08ND - C2

320

43-

35-

104

320

285

255

Service panel

Gas refrigerant

pipe joint

Refrigerant pipe

(flared) [9.52

Liquid refrigerant

pipe joint

Refrigerant pipe

(flared) [6.35

Airout

Air in

Service port

155

260

780

500

122

540 109 32

110

147

Drainage

3 holes [33

100mm or more

350mm or more

REQUIRED SPACE

400mm or more

OB403B--1.qxp 07.6.26 10:28 AM Page 5

100mm or more

REQUIRED SPACE

350mm or more

500mm or more

100mm or more

30 Service panel

Service port

605

292

50 183

500

850 74

157

100

161

Gas refrigerant

pipe joint

Refrigerant pipe (flared)

[12.7

Liquid refrigerant

pipe joint

Refrigerant pipe (flared)

[6.35

Drainage

3 holes [33 Air out

Air in

248

350

290

310

345

355

Drainage

hole [16.2

MU-A15ND - C1 Unit : mm

Unit : mm

OUTDOOR UNIT

MU-A10ND

MU-A12ND

43-

35-

800

302.5 500

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

(MU-A

10ND)

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-A10ND)

Refrigerant pipe (flared) [12.7

(MU-A12ND)

2 holes 10X21

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

REQUIRED SPACE

OUTDOOR UNIT

OB403B--1.qxp 07.6.26 10:28 AM Page 6

Unit : mm

OUTDOOR UNIT

MU-A15ND - C2

30 Service panel

Service port

605

292

50 183

500

850 81

157

100

161

Gas refrigerant

pipe joint

Refrigerant pipe (flared)

[12.7

Liquid refrigerant

pipe joint

Refrigerant pipe (flared)

[6.35

Drainage

3 holes [33 Air out

Air in

248

350

290

310

345

355

Drainage

hole [16.2

100mm or more

REQUIRED SPACE

350mm or more

500mm or more

100mm or more

OB403B--1.qxp 07.6.26 10:28 AM Page 7

WIRING DIAGRAM

MU-A08ND

SYMBOL

TB1,TB2

51C

NAME NAME NAME

COMPRESSOR CAPACITOR

OUTDOOR FAN CAPACITOR

FUSE (3.15A)

FUSE (20A)

COMPRESSOR (OUTER PROTECTOR)

OUTDOOR FAN MOTOR (INNER PROTECTOR)

TERMINAL BLOCK

OVERCURRENT RELAY

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

TB1

TB2

GRN/YLW

RED MC R

BLK

POWER SUPPLY

220-230V ~/N 60Hz

CONNECTING

TO INDOOR UNIT

BRN

BLU

14 51C

WHT WHT

BLK

WHT

RED

WHT

220-230V~

MU-A10ND

MU-A12ND

SYMBOL

TB1,TB2

NAME NAME NAME

COMPRESSOR CAPACITOR

OUTDOOR FAN CAPACITOR FUSE (3.15A)

COMPRESSOR (INNER PROTECTOR)

OUTDOOR FAN MOTOR (INNER FUSE

)

TERMINAL BLOCK

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

TB1

TB2 C2

220-230V~

BLU BLU

WHT

RED

WHT

CONNECTING

BLK

BLU

2MF

WHT

BLK

RED

GRN/YLW

RED

POWER SUPPLY

220-230V

~/N 60Hz

220-230V~

BRN

BLU

TO INDOOR

UNIT

OB403B--1.qxp 07.6.26 10:28 AM Page 8

REFRIGERANT SYSTEM DIAGRAM

Strainer

#100

MU-A08ND

Refrigerant pipe

(Option) [9.52

(with heat insulator)

Outdoor

heat

exchanger

Capillary tube

[3.0x[1.4x800

Refrigerant pipe

(Option) [6.35

(with heat insulator) Refrigerant flow in cooling

Unit: mm

Stop valve

(with service port)

Compressor

Flared connection

Stop valve

MU-A15ND

SYMBOL

TB1,TB2

NAME NAME NAME

COMPRESSOR CAPACITOR

OUTDOOR FAN CAPACITOR FUSE (3.15A)

COMPRESSOR (INNER PROTECTOR)

OUTDOOR FAN MOTOR (INNER PROTECTOR)

TERMINAL BLOCK

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

CONNECTING

TO INDOOR UNIT

TB2

RED

ORN

BLU

WHT

GRN/YLW

C2 RED

BLK

WHT

ORN

321

WHT

BLK

TB1

BRN

BLU C1 RED

BLU

POWER SUPPLY

220-230V ~/N 60Hz

BLU

220-230V~

OB403B--1.qxp 07.6.26 10:28 AM Page 9

Capillary tube

{3.0 x {1.6x750

Stop valve

(with service port)

Stop valve

Compressor Strainer

#100

Outdoor heat

exchanger

Refrigerant flow in cooling

Refrigerant pipe

(Option){6.35

(with heat insulator)

Refrigerant pipe

(Option){12.7

(with heat insulator)

Flared

connection

Flared

connection

MU-A12ND Unit: mm

MU-A10ND

Refrigerant flow in cooling

Capillary tube

{3.0 x {1.6 x 500 (MU-A10ND - )

{3.0 x {1.6 x 850 (MU-A10ND - )

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

OB403B--1.qxp 07.6.26 10:28 AM Page 10

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