Mitsubishi Electric MU-A08ND-c1 User manual

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-A08ND-
MU-A10ND-
MU-A10ND-
MU-A12ND-
MU-A15ND-
MU-A15ND- C2
C1
C1
C2
C1
C2
C1
MU-A10ND
MU-A12ND
TM
Revision:B
• MU-A10ND - has been added.
• RoHS PARTS LIST has been added.
C2
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

2
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
C2C1
C2C1
C1C2
C1C2
C1C2
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.
C2
OB403B--1.qxp 07.6.26 10:28 AM Page 2

3
PART NAMES AND FUNCTIONS
2
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
4
3
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)
kW
R/h
K/h
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
MU-A15ND
4.0
1.8
2280
35
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
42
52
865
1.6
520 (MS56)
Electrical data
Fan motor
Special remarks Compressor
Capacity
MU-A08ND
2.2
0.5
1656
19
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
28
45
700
0.8
260 (ATM0S M60)
MU-A10ND
2.9
1.2
1896
26
3.86
0.26
3.12
RH145NHNT
700
C-R 2.74
C-S 3.78
RA6N21-AB
WHT-BLK 384
BLK-RED 259
32
46
820
0.6
1.1
300 (MS56)
1
MU-A12ND
3.6
1.7
1884
30
4.95
0.35
3.08
RH174NHNT
800
C-R 2.19
C-S 3.3
RA6N30-BA
WHT-BLK 312
BLK-RED 255
34
47
850
1.2
520 (MS56)
Cooling
Single phase
220-230V, 60Hz
800o550o285
C1
C2
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
25
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
Air in
Service port
155
90
74
260
10
780
500
122
40
540 109 32
110
147
Drainage
3 holes [33
5
OUTLINES AND DIMENSIONS4
Unit : mm
100mm or more
100mm or more
100mm or more
350mm or more
REQUIRED SPACE
400mm or more
OUTDOOR UNIT
MU-A08ND - C1
Unit : mm
OUTDOOR UNIT
MU-A08ND - C2
320
25
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
Air in
Service port
155
90
81
74
260
10
780
500
122
40
540 109 32
110
147
Drainage
3 holes [33
100mm or more
100mm or more
100mm or more
350mm or more
REQUIRED SPACE
400mm or more
OB403B--1.qxp 07.6.26 10:28 AM Page 5

6
100mm or more
REQUIRED SPACE
350mm or more
500mm or more
100mm or more
100mm or more
30 Service panel
Service port
605
292
20
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
30
o
35
o
Drainage
3 holes [33 Air out
Air in
Air in
248
35
350
50
290
310 345
20
355
90
Drainage
hole [16.2
MU-A15ND - C1 Unit : mm
Unit : mm
OUTDOOR UNIT
MU-A10ND
MU-A12ND
43-
35-
10
69
800
302.5 500
150
22.3
Handle
550
280
164.5
99.5
170.5
23 Service panel
Service port
285
344.5
44
400
Air in
Air out
Air in
(MU-A
10ND)
17.5
Bolt pitch for
installation
304~325
40
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
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

7
Unit : mm
OUTDOOR UNIT
MU-A15ND - C2
30 Service panel
Service port
605
292
20
50 183
500
850 81
74
157
100
161
Gas refrigerant
pipe joint
Refrigerant pipe (flared)
[12.7
Liquid refrigerant
pipe joint
Refrigerant pipe (flared)
[6.35
30
o
35
o
Drainage
3 holes [33 Air out
Air in
Air in
248
35
350
50
290
310 345
20
355
90
Drainage
hole [16.2
100mm or more
REQUIRED SPACE
350mm or more
500mm or more
100mm or more
100mm or more
OB403B--1.qxp 07.6.26 10:28 AM Page 7

WIRING DIAGRAM
8
5
MU-A08ND
SYMBOL
C1
C2
F1
SYMBOL
F2
MC
MF
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
N
L
2
N
L
MF
C2
C1
S
RED MC R
C
BLK
POWER SUPPLY
220-230V ~/N 60Hz
CONNECTING
TO INDOOR UNIT
BRN
BLU
BLU
BLU
14 51C WHT WHT
BLK
WHT
RED
WHT
F1
F2
220-230V~
220-230V~
MU-A10ND
MU-A12ND
SYMBOL
C1
C2
SYMBOL
F
MC
SYMBOL
MF
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
N
L
TB1
L
N
2
TB2 C2
220-230V~
C1
BLU BLU
WHT
WHT
RED
R
MC
C
WHT
CONNECTING
BLK
S
BLU
1
3
2MF
WHT
BLK
RED
GRN/YLW
RED
POWER SUPPLY
220-230V
~/N 60Hz
220-230V~
F
BRN
BLU
TO INDOOR
UNIT
OB403B--1.qxp 07.6.26 10:28 AM Page 8

9
REFRIGERANT SYSTEM DIAGRAM
6
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
Flared connection
Stop valve
MU-A15ND
SYMBOL
C1
C2
SYMBOL
F
MC
SYMBOL
MF
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
R
S
2
N
L
TB2
RED
ORN
BLU
WHT
GRN/YLW
C2 RED
MF
BLK
4
WHT
ORN
321
WHT
BLK
L
N
TB1
BRN
BLU C1 RED
C
MC
BLU
POWER SUPPLY
220-230V ~/N 60Hz
F
BLU
220-230V~
220-230V~
OB403B--1.qxp 07.6.26 10:28 AM Page 9

10
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
C1
C2
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