Mitsubishi Electric MU-GD08ND, MU-GD10ND, MU-GD12ND Service Manual

CONTENTS

1. TECHNICAL CHANGES

····································

2

2. PART NAMES AND FUNCTIONS

······················

3

3. SPECIFICATION

·················································

4

4. OUTLINES AND DIMENSIONS

·························

5

5. WIRING DIAGRAM

············································

6

6. REFRIGERANT SYSTEM DIAGRAM

················

7

7. PERFORMANCE CURVES

································

9

8. TROUBLESHOOTING

······································

11

9. DISASSEMBLY INSTRUCTIONS

····················

12

SPLIT-TYPE, AIR CONDITIONERS

MU-GD08ND­MU-GD10ND­MU-GD12ND-

C1

C1

C1

TM

Indoor unit service manual

MS-GD•ND Series (TBH014)

No. TBH016

SERVICE MANUAL

Wireless type
Models

OUTDOOR UNIT

NOTE:

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

PARTS CATALOG (TBB016)

MU-GD08ND-



C1

2

TECHNICAL CHANGES1

MU-A08ND-

C2

= MU-GD08ND-

C1

1. Compressor has been changed. (2R10S3R236A-6B = KS-098NARC)

2. Outdoor fan motor has been changed. (RA6N33-AA = RA6V21-BE)

3. Outdoor heat exchanger has been changed.

4. Compressor capacitor has been changed.

5. Fan motor capacitor has been changed.

MU-A12ND- C1 = MU-GD12ND-

C1

1. Compressor has been changed. (RH174NHNT = RH189NRAT)

2. Outdoor fan motor has been changed. (RA6N30-BA = RA6V33-MC)

3. Compressor capacitor has been changed.

4. Fan motor capacitor has been changed.

MU-A10ND-

C2

= MU-GD10ND-

C1

1. Model name changed.

3

2

PART NAMES AND FUNCTIONS

Air outlet

Drain outlet

Piping

Drain hose

Air inlet
(back and side)

MU-C08VC
MU-C10VC
MU-C13VC

MU-C18VC

Air inlet
(back and side)

Piping

Drain hose

Air outlet

Drain outlet

MU-GD08ND

MU-GD10ND
MU-GD12ND

4

SPECIFICATION

3

Outdoor model

MU-GD08ND -

C1

MU-GD10ND -

C1

MU-GD12ND -

C1

Function Cooling

Power supply

Single phase

220-230V, 60Hz

Capacity

Capacity kW 2.2-2.2 2.9-2.9 3.6-3.6

Dehumidifi cation R/h 0.1 0.45 1.1

Air fl ow K /h 1896-1962 1452-1524 2106-2124

Electrical data

Power outlet A 10 10 10

Running current (Total) A 3.19-3.24 4.31-4.31 5.7-5.7

Power input (Total) W 680-685 930-930 1210-1210

Power factor (Total) % 97-92 98-94 96-92

Starting current A 19 26 40

Compressor motor current A 2.67-2.71 3.86-3.85 5.14-5.13

Fan motor current A 0.330-0.340 0.260-0.270 0.370-0.380

Coeffi cient of performance (C.O.P) 3.24-3.21 3.12-3.12 2.98-2.98

Compressor

Model KS098NARC RH145NHNT RH189NRAT

Output W 500 700 900

Winding
resistance (at 20:)

Ω

C-R 3.54
C-S 4.90

C-R 2.74
C-S 3.78

C-R 1.50
C-S 2.33

Fan

motor

Model RA6V21-BE RA6N21-AB RA6V33-MC

Winding
resistance (at 20:)

Ω

WHT-BLK 252
BLK-RED 278

WHT-BLK 384
BLK-RED 259

WHT-BLK 141
BLK-RED 175

Dimensions WxHxD mm 684x540x255 800x550x285

Weight kg 22 34 35

Special

remarks

Sound level dB 46-47 46-46 50-51

Fan speed rpm 820-830 690-720 980-990

Fan speed regulator 1

Refrigerant fi lling capacity (R22) kg 0.55 1.10

Refrigeration oil (Model) cc 300(NM56) 520(NM56)

NOTE: Test conditions are based on CNS 14464
Cooling : Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature 24°C
Refrigerant piping length (one way) 7.5 m

5

4

OUTLINES AND DIMENSIONS

20.8

6.441
6

.
98

255

145.5

Service panel

Service port

Air out

Liquid refrigerant pipe joint
Refrigerant pipe (flared) ;6.35

Gas refrigerant pipe joint
Refrigerant pipe (flared) ;9.52

34 

04 

REQUIRED SPACE

Basically open 100mm or more
without any obstruction in front
and on both sides of the unit.

ero

m

r

o m

m0

5

3

ero

m

ro

mm0

01

erom ro

m

m00

1

erom

ro mm001

Open two sides of left,
right, or rear side.

Air in

Air in

381.5

Drain hole

;33

ro
f

hct
ip t

loB

noitalla

tsni

082~462

0
03

045

072

0
1

5.74

5.
22

17.5

243

Bolt pitch for installation

500

684

61

105

Handle

2 holes 10'16

40

Unit : mm

Unit : mm

0
1

69

800

302.5

500 Bolt pitch for installation

150

22.3

Handle

055

0
82

5.
46

1

5.9
9

170.5

23

Service panel

Service port

582

5.44

3

44

400

Air in

Air out

5.7
1

r
o

f
hct

i
p
tlo

B

no
ital

lats

n

i

52
3

~
4
03

40

Liquid refrigerant pipe joint
Refrigerant pipe (flared) ;6.35

Gas refrigerant pipe joint
Refrigerant pipe (flared)

34 

53 

2 holes 10'21

REQUIRED SPACE

Basically open 100mm or more
without any obstruction in front
and on both sides of the unit.

erom ro m

m053

erom

ro mm002

erom ro

mm

00

1

e

rom ro mm001

Open two sides of left,
right, or rear side.

Drain hole ;42

Air in

;9.52 (MU-GD10ND)
;12.7 (MU-GD12ND)

MU-GD08ND

MU-GD10ND
MU-GD12ND

6

WIRING DIAGRAM

5

MU-C08VC
MU-C10VC

MU-C13VC

MU-GD08ND

MU-GD10ND