Mitsubishi MS-07NV - E2 (WH), MS-12NV - E1 (WH), MS-09NV - E2 (WH), MS-12NV - E2 (WH), MS-18NV - E2 (WH) Service Manual
...
This Servise Manual OB206 deals with MS-07/09/12/18/24NV-E1,
MU-07/09/12/18/24NV-E1, MS-18NV-E2, and MU-18NV-E2 in
OB175 THIRD EDITION issued in June in 1997.
Therfore, please refer to OB206, not to OB175 THIRD EDITION,
for the above models.
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
No. OB206
MS-07NV MS-09NV MS-12NV MS-18NV MS-24NV MS-07NV MS-09NV MS-12NV MS-18NV MS-24NV MS-18NV -
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
· MU-07NV -
· MU-09NV -
· MU-12NV -
· MU-18NV -
· MU-24NV -
· MU-07NV -
· MU-09NV -
· MU-12NV -
· MU-18NV -
· MU-24NV -
· MU-18NV -
CONTENTS
E1E1
E1E1
E1E1
E1E1
E1E1
E2E2
E2E2
E2E2
E2E2
E2E2
E3E3
MS-18NV MS-24NV MS-18NV MS-24NV MS-18NV -
E1
E1
E2
E2
E3
1. TECHNICAL CHANGES····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································6
4. OUTLINES AND DIMENSIONS·························9
5. WIRING DIAGRAM ··········································12
6. REFRIGERANT SYSTEM DIAGRAM··············20
7. PERFORMANCE CURVES······························24
8. MICROPROCESSOR CONTROL ····················27
9. SERVICE FUNCTIONS ····································34
10. TROUBLESHOOTING······································37
11. DISASSEMBLY INSTRUCTIONS·····················45
12. PARTS LIST······················································53
13. OPTIONAL PARTS···········································61
1
TECHNICAL CHANGES
MS-07NV - ➔MS-07NV -
1. Indoor electronic control P.C. board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
MS-09NV - ➔MS-09NV -
1. Indoor electronic control P.C. board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
3. Refrigerant filling capacity (R-22) has changed. (900g ➔850g)
MS-12NV - ➔MS-12NV -
1. Indoor electronic control P.C. board has changed.
However, it is compatible between and models.
Auto restart function is added.
MS-18NV - ➔MS-18NV -
1. Indoor electronic control P.C. board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
MS-24NV - ➔MS-24NV -
1. Indoor electronic control P.C. board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
E2E1
E2E1
E2E1
E2E1
E2E1
E2E1
E3E2
E3E2
E2E1
E2E1
2
2
PART NAMES AND FUNCTIONS
INDOOR UNIT
MS-07NV - MS-09NV - MS-12NV MS-07NV - MS-09NV - MS-12NV -
E1E1E1
E2E2E2
MS-18NV MS-24NV MS-18NV MS-24NV MS-18NV -
E1
E1
E2
E2
E3
(When the front panel is open)
MS-07NV - MS-09NV - MS-12NV MS-07NV - MS-09NV - MS-12NV -
MS-18NV - MS-24NV -
E1E1
E1E1E1
E2E2E2
MS-18NV - MS-24NV - MS-18NV -
OUTDOOR UNIT
MU-07NV- MU-09NV MU-07NV- MU-09NV -
E1E1
E2E2
MS-07NV - MS-09NV - MS-12NV MS-07NV - MS-09NV - MS-12NV -
MS-18NV - MS-24NV MS-18NV - MS-24NV - MS-18NV -
E3E2E2
E1E1
MU-12NV - MU-18NV MU-24NV - MU-12NV MU-18NV - MU-24NV MU-18NV -
E3
E1E1E1
E2E2E2
E3E2E2
E1E1
E2E1
E2E2
3
MS-07NV - MS-09NV - MS-12NV MS-18NV - MS-24NV - MS-18NV -
REMOTE CONTROLLER
E1E1E1
E2E1E1
4
MS-07NV - (Product number 7000001T~) MS-09NV - (Product number 7000001T~)
MS-12NV - (Product number 7000001T~) MS-24NV - (Product number 7000001T~)
MS-07NV - MS-09NV MS-12NV - MS-18NV - (Product number 7000001T~)
MS-24NV - MS-18NV -
E1E1
E1E1
E2E2
E2E2
E3E2
5
Capacity
Electrical data
Compressor
Indoor
fan motor
Outdoor
fan motor
Dimensions
Weight
Special remarks
Model
Function
Power supply
Coefficient of performance(C.O.P)
Capacity
Dehumidification
Air flow
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding resistance(at20:)
Model
Winding resistance(at20:)
Model
Winding resistance(at20:)
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Air direction
Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator
Refrigerant filling capacity(R-22)
Thermistor
Width
Height
Depth
Width
Height
Depth
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
RT11(at25:)
RT12(at25:)
kW
r/h
K /h
A
A
W
A(kW)
%
A
A
A
W
"
"
"
mm
mm
mm
mm
mm
mm
kg
kg
dB
dB
rpm
rpm
kg
k"
k"
MS-07NV -
E1
E2
Cooling
2.2
0.8
3.15-3.05
680-710
98-97
2.69-2.59
3.24-3.10
RH-135VGHT
650
C-R 4.17 C-S 5.75
0.65
MS-09NV - E1
Cooling
2.5
1.1
3.60-3.45
780-810
98-98
3.15-2.99
3.21-3.09
RH-145VGHT
700
C-R 4.04 C-S 5.96
0.9
815
275
183
780
540
255
8
32
5
37
44-45
1,100
740-770
4
1
10
10
Single phase,220-240V,50Hz
INDOOR 492 OUTDOOR 1620
10
—
25
INDOOR 0.17 OUTDOOR 0.29
RC4V19-AA
WHT-BLK292.4 BLK-RED324.6
RA6V23-AB
WHT-BLK268.4 BLK-RED390.8
3
NOTE:Test conditions
6
SPECIFICATION
Cooling : Indoor DB27: / WB19:
Outdoor DB35: / WB24:
Model
Function
Power supply
Capacity
Capacity
Dehumidification
Air flow
Power outlet
Running current
Power input
Auxiliary heater
Electrical data
Power factor
Starting current
Compressor motor current
Fan motor current
Coefficient of performance(C.O.P)
Model
Compressor
Output
Winding resistance(at20:)
Indoor
fan motor
Outdoor
fan motor
Model
Winding resistance(at20:)
Model
Winding resistance(at20:)
Indoor unit
Dimensions
Outdoor unit
Weight
Indoor unit
Outdoor unit
Air direction
Sound level
(Hi)
Fan speed
Special remarks
(Hi)
Fan speed
regulator
Refrigerant filling capacity(R-22)
Thermistor
NOTE:Test conditions
Cooling : Indoor DB27: / WB19:
Outdoor DB35: / WB24:
Width
Height
Depth
Width
Height
Depth
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
RT11(at25:)
RT12(at25:)
MS-09NV - E2
Cooling
Single phase,220-240V,50Hz
kW
r/h
INDOOR 492 OUTDOOR 1620
K /h
2.5
1.1
A
A
W
3.60-3.45
780-810
A(kW)
%
A
A
INDOOR 0.17 OUTDOOR 0.29
A
98-98
25
3.15-2.99
3.21-3.09
RH-145VGHT
W
"
"
WHT-BLK268.4 BLK-RED390.8
"
700
C-R 4.04 C-S 5.96
WHT-BLK292.4 BLK-RED324.6
RA6V23-AB
mm
mm
mm
mm
mm
mm
780
540
255
kg
kg
dB
dB
rpm
rpm
kg
32
37
44-45
1,100
740-770
0.65
k"
k"
MS-12NV -
Cooling
3.5
1.6
INDOOR 558 OUTDOOR 2190-2304
10
6.20-6.35
1310-1390
—
96-91
35
5.66-5.81
INDOOR 0.17 OUTDOOR 0.37
2.67-2.52
RH-231VHAT
1,100
C-R 2.11 C-S 3.97
RC4V19-AA
RA6V40-EC or EE
WHT-BLK130.4 BLK-RED134.6
815
275
183
850
605
290
8
38
5
42
50
1,230
780-820
4
1
0.8
10
10
E1
E2
7
Capacity
Electrical data
Compressor
Indoor
fan motor
Outdoor
fan motor
Dimensions
Weight
Special remarks
Model
Function
Power supply
Coefficient of performance(C.O.P)
Capacity
Dehumidification
Air flow
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current
Model
Output
Winding resistance(at20:)
Model
Winding resistance(at20:)
Model
Winding resistance(at20:)
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Air direction
Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator
Refrigerant filling capacity(R-22)
Thermistor
Width
Height
Depth
Width
Height
Depth
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
RT11(at25:)
RT12(at25:)
kW
R/h
K /h
A
A
W
A(kW)
%
A
A
A
W
"
"
"
mm
mm
mm
mm
mm
mm
kg
kg
dB
dB
rpm
rpm
kg
k"
k"
MS-18NV -
E1 E2 E3
MS-24NV -
E1 E2
Single phase,220-240V,50Hz
—
WHT-BLK183.8 BLK-RED250.5
1,015
320
190
850
605
290
14
5
4
10
10
Cooling
6.4
3.4
INDOOR 816 OUTDOOR 2286
25
12.9-12.6
2,780-2,900
98-96
59
12.06-11.76
INDOOR 0.29 OUTDOOR 0.55
2.30-2.21
NH-47VMDT
2,200
C-R0.96 C-S 2.07
RA4V27-EC
RA6V60-AA or AB
WHT-BLK81.1 BLK-RED102.2 BLK-YLW 92.2
61
45
53
1,260
860-886
2
2.15
Cooling
5.1
2.5
INDOOR 756 OUTDOOR 2190
15
9.1
1,910-2,010
95-92
51-55
8.46
INDOOR 0.25 OUTDOOR 0.39
2.67-2.54
NH-33VMDT
1,500
C-R1.2 C-S 2.7
RA4V27-EA
RA6V50-OD or OF
WHT-BLK116.4 BLK-RED111
55
42
52
1,180
810-845
1
1.65
NOTE:Test conditions
Cooling : Indoor DB27: / WB19:
Outdoor DB35: / WB24:
8
4
OUTLINES AND DIMENSIONS
MS-07NV - MS-09NV MS-07NV - MS-09NV -
INDOOR UNIT
E1E1
E2E2
Unit : mm
MU-07NV - MU-09NV MU-07NV - MU-09NV -
OUTDOOR UNIT
E1E1
E2E2
9
MS-12NV - MS-12NV -
INDOOR UNIT
E2E1
Unit : mm
{
MU-12NV - MU-12NV -
OUTDOOR UNIT
E2E1
If the right/left sides or
back side is vacant,the
front has only to be 50cm
unobstructed.
If the front or right/left sides
are vacant, the top has only
to be 10cm unobstructed.
10
12.7
MS-18NV - MS-24NV -
E1E1
MS-18NV - MS-24NV - MS-18NV -
INDOOR UNIT
995995
6060
E3E2E2
4040
4holes 14holes 111✕✕2020
150150 648648 217217
Unit : mm
Indoor unitIndoor unit
2020
10151015
320320
1901907757755050
Power supply cordPower supply cord
Lead to right 2mLead to right 2m
Lead to left 1mLead to left 1m
5656
17.517.5
160160
Wireless remote controllerWireless remote controller
MU-18NV - MU-24NV -
E1E1
MU-18NV - MU-24NV - MU-18NV -
OUTDOOR UNIT
Installation plateInstallation plate
Air inAir in
Air outAir out
E3E2E2
450450
450450
352352438438
55190190
Installation plateInstallation plate
Liquid line Liquid line [[8-0.5m8-0.5m
Gas line Gas line [[12-0.43m12-0.43m
{
Insulation Insulation [[50 O.D50 O.D
[ [28 I.D28 I.D
Drain hose Drain hose [[1616
Insulation Insulation [[2828
254254
33 297297
WWall hole all hole [[7575
If the front or right/left sides
are vacant, the top has only
to be 10cm unobstructed.
If the right/left sides or
back side is vacant,the
front has only to be 50cm
unobstructed.
11
5
WIRING DIAGRAM
MS-07NV MS-09NV -
INDOOR UNIT
SYMBOL
C11
F12
F11
MF
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
MU-07NV MU-09NV -
E1
E1
MODELS WIRING DIAGRAM
❈
❈
❈
NAME
INDOOR FAN CAPACITOR
FUSE(93:)
FUSE(3.15A)
INDOOR FAN MOTOR
E1
E1
MODELS WIRING DIAGRAM
SYMBOL
NR11
RT11
RT12
HIC1
❈
❈
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
DC/DC CONVERTER
SYMBOL
TB
MV
SR11
52C
TERMINAL BLOCK
VANE MOTOR
SOLID STATE RELAY
CONTACTOR
OUTDOOR UNIT
❈
❈
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN CAPACITOR
C2
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
NAME
SYMBOL
MF
MC
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
NAME NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE (2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
12
MS-12NV -
E1
MODEL WIRING DIAGRAM
NAME
❈
❈
❈
❈
SYMBOL
NR11
RT11
RT12
HIC1
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
DC/DC CONVERTER
❈
NAME NAME
INDOOR UNIT
SYMBOL
C11
F12
F11
MF
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE(93:)
FUSE(3.15A)
INDOOR FAN MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
SYMBOL
TB
MV
SR11
52C
TERMINAL BLOCK
VANE MOTOR
SOLID STATE RELAY
CONTACTOR
MU-12NV -
E1
MODEL WIRING DIAGRAM
OUTDOOR UNIT
❈
❈
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN CAPACITOR
C2
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
NAME
SYMBOL
MF
MC
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
NAME NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
13
MS-18NV -
E1
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
POWER
SUPPLY
CORD
1~
220-240V
50Hz
MODEL WIRING DIAGRAM
TB
L
❈
BRN
BRN
❈
2
❈
N
❈
BLU
GRN/YLW
WHT
BLK
F12
BRN
DSAR
RECEIVER
P.C.BOARD
BLK
BLK
101CN102
GRN/YLW
REMOTE
CONTROLLER
2
1
LD1
3 3
BLK
CN
DISPLAY
P.C.BOARD
❈
4
CN201
3
1
CN
151
ELECTRONIC CONTROL P.C BOARD
5
MV
52C
❈
3
F11
IC141
NR11
CN
112
3
CN
121
CN211
C11
4
2
1
CN
111
BRN
YLW
GRY
WHT
RED
BLK
RT12
MF
RT11
SYMBOL
C11
F12
F11
MF
MV
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE(93:)
FUSE(3.15A)
INDOOR FAN MOTOR
VANE MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
MU-18NV -
OUTDOOR UNIT
NAME
E1
TO INDOOR UNIT
CONNECTING
MODEL WIRING DIAGRAM
TB
2
N
SYMBOL
NR11
RT11
RT12
IC141
GRN / YLW
❈
❈
52C
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
WHT
BLK
C1
C2
RED
BLK
BLK
WHT
ORN
RED
SYMBOL
MC
S
4
3
2
1
TB
DSAR
C
BLK
WHT
ORN
RED
TERMINAL BLOCK
SURGE ABSORBER
R
MF
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN CAPACITOR
C2
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
NAME
14
SYMBOL
MF
MC
NAME NAME
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
SYMBOL
TB
F
TERMINAL BLOCK
FUSE (2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
MS-24NV -
SYMBOL
TB
DSAR
HIC1
SYMBOL
NR11
RT11
RT12
IC141
52C
SYMBOL
C11
F12
F11
MF
MV
NAME
NAME NAME
INDOOR FAN CAPACITOR
FUSE(93¡C)
FUSE(3.15A)
INDOOR FAN MOTOR
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
TERMINAL BLOCK
SURGE ABSORBER
DC / DC CONVERTER
6
5
4
3
2
1
78
RED
X1
BLU
F
1
TB2
RED
BLU
BLU
GRY
WHT
TO INDOOR
UNIT
CONNECTING
REDRED
a
b
TB
2
WHT
52C
1
2
R
C
S
BLK
RED
C1
MC
YLW YLW
BLK
WHT
RED
ORN
WHT
BLK
ORN
RED
C2
MF
RED
CR
52C
N
RED
GRN/YLW
3
6
26F1
X1
BLU
5
1
3
220-240V
220-240V
SYMBOL
C1
C2
X1
SYMBOL
MF
MC
52C
SYMBOL
TB
CR
F
NAME
NAME NAME
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
FAN MOTOR RELAY
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
COMPRESSOR CONTACTOR
TERMINAL BLOCK
SURGE ABSORBER
FUSE(2A)
E1
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
CIRCUIT BREAKER
MODEL WIRING DIAGRAM
220-240V~
220-240V~
TB
❈
3
2
❈
BRN
N
❈
BLU
GRN/YLW
RED
WHT
BLU
F12
WHT
1
GRN/YLW
DSAR
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
BLU
BLU
2
1
WHT
101CN102
3 3
LD1
CN
BLU
CN
151
MV
DISPLAY
P.C.BOARD
CN201
5
HIC1
❈
4
52C
❈
3
3
1
ELECTRONIC CONTROL P.C BOARD
TRANS
F11
IC141
NR11
CN
112
CN
121
CN211
C11
4
2
1
CN
111
RT12
3
BRN
YLW
GRY
MF
WHT
RED
BLK
RT11
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
MU-24NV -
E1
MODEL WIRING DIAGRAM
OUTDOOR UNIT
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
❈
❈
❈
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
15
MS-07NV - MS-09NV - MS-12NV -
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
220-240V~
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
MODELS WIRING DIAGRAM
TB
L
❈
BRN
BRN
F12
BLU
1
BLU
122
1
2
CN
LD101
5
2
❈
WHT
❈
N
BLU
BLU
GRN/YLW
GUARD
PLATE
GRN/YLW
POWER MONITOR,
RECEIVER
P.C.BOARD
BLU
CN
151
MV
5
E2E2E2
HIC1
❈
CN201
1
ELECTRONIC CONTROL P.C BOARD
3
52C
4
❈
TRANS
F11
NR11
SR11
C11
CN
112
CN
111
CN
121
3
2
1
CN211
RT12
RT11
BLK
GRY
YLW
BRN
WHT
RED
1
2
3
MF
4
5
6
3
CIRCUIT BREAKER
SYMBOL
C11
F12
F11
MF
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE(93:)
FUSE(3.15A)
INDOOR FAN MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
NAME
MU-07NV - MU-09NV -
OUTDOOR UNIT
TO
INDOOR UNIT
CONNECTING
MODELS WIRING DIAGRAM
220-240V~
REMOTE
CONTROLLER
E2E2
TB
2
N
GRN/YLW
SYMBOL
NR11
RT11
RT12
HIC1
❈❈❈
❈
BLU
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
DC/DC CONVERTER
WHT
F
C2
WHT
BLU
RED
1
2
3
BLU
WHT
BLK
RED
SYMBOL
TB
MV
SR11
52C
WHT
MF
TERMINAL BLOCK
VANE MOTOR
SOLID STATE RELAY
CONTACTOR
C
C1
RED
BLK
MC
S
R
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN CAPACITOR
C2
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
NAME
16
SYMBOL
MF
MC
NAME NAME
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
SYMBOL
TB
F
TERMINAL BLOCK
FUSE (2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
MS-18NV -
E2
MODEL WIRING DIAGRAM
INDOOR UNIT
❈
~
❈
❈
SYMBOL
C11
F12
F11
MF
MV
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE(93¡C)
FUSE(3.15A)
INDOOR FAN MOTOR
VANE MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
NAME
SYMBOL
NR11
RT11
RT12
IC141
52C
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
❈
❈
SYMBOL
TB
DSAR
HIC1
TERMINAL BLOCK
SURGE ABSORBER
DC / DC CONVERTER
MU-18NV -
E2
MODEL WIRING DIAGRAM
OUTDOOR UNIT
❈
❈
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN CAPACITOR
C2
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
NAME
SYMBOL
MF
MC
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
NAME NAME
SYMBOL
TB
F
TERMINAL BLOCK
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
17
MS-24NV -
E2
INDOOR UNIT
220-240V~ `
MODEL WIRING DIAGRAM
TB
3
❈
RED
HIC1
IC141
112
CN
RT12
220-240V~
TO OUTDOOR
UNIT
CONNECTING
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
CIRCUIT BREAKER
2
GRN/YLW
SYMBOL
C11
F12
F11
MF
MV
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
MU-24NV -
INDOOR FAN CAPACITOR
FUSE(93¡C)
FUSE(3.15A)
INDOOR FAN MOTOR
VANE MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
E2
OUTDOOR UNIT
TO INDOOR
WHT
BLU
WHT
F12
BLU
BLU
1
GRN/YLW
DSAR
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
2
1
WHT
LD1
CN
CN
102
101
3 3
SYMBOL
N
BLU
❈
BRN
❈
NAME
NR11
RT11
RT12
IC141
52C
MODEL WIRING DIAGRAM
TB
220-240 ~
UNIT
CONNECTING
220-240 ~
2
❈
N
❈
3
❈
GRN/YLW
WHT
RED
CN201
BLU
DISPLAY
P.C.BOARD
3
1
CN
ELECTRONIC CONTROL P.C BOARD
151
5
MV
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
52C
2
BLU
BLU
BLU
RED
TB2
1
F
❈
4
52C
3
❈
NAME NAME
1
RED
78
X1
5
6
A2/b
52C
A1/a
RED
RED
CR
F11
X1
TRANS
C2
3
1
GRY
SYMBOL
DSAR
WHT
26F1
RED
NR11
CN211
C11
TB
TERMINAL BLOCK
SURGE ABSORBER
HIC1
RED
ORN
WHT
BLK
YLW YLW
DC / DC CONVERTER
RED
1
ORN
2
WHT
3
BLK
4
5
6
BLU
CN
121
CN
111
3
BRN
YLW
GRY
MF
MF
S
RED
WHT
RED
BLK
RT11
C
MC
R
BLK
C1
4
2
1
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN CAPACITOR
C2
FAN MOTOR RELAY
X1
TB2
NOTE:1. Use copper conductors only.(For field wiring)
TERMINAL BLOCK
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
NAME
18
SYMBOL
MF
MC
52C
26F1
NAME NAME
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
COMPRESSOR CONTACTOR
THERMAL READ SWITCH
SYMBOL
TB
CR
F
TERMINAL BLOCK
SURGE ABSORBER
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
MS-18NV -
E3
INDOOR UNIT
O OUTDOOR
T
UNIT
CONNECTING
220-240V~
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
CIRCUITBREAKER
MODEL WIRING DIAGRAM
TB
L
GRN/YLW
❈
BRN
❈
2
❈
N
❈
BLU
BRN
WHT
BLU
F12
BRN
DSAR
RECEIVER
P.C.BOARD
BLU
BLU
101
GRN/YLW
REMOTE
CONTROLLER
2
1
LD1
CN
3 3
BLU
CN
102
DISPLAY
P.C.BOARD
HIC1
❈
4
CN201
3
1
CN
151
ELECTRONIC CONTROL P.C BOARD
5
MV
52C
❈
3
TRANS
F11
IC141
NR11
CN
112
CN
121
CN211
4
C11
2
1
CN
111
RT12
3
BRN
YLW
GRY
WHT
MF
RED
BLK
RT11
SYMBOL
C11
F12
F11
MF
MV
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN CAPACITOR
FUSE(93¡C)
FUSE(3.15A)
INDOOR FAN MOTOR
VANE MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
MU-12NV - MU-18NV -
OUTDOOR UNIT
TO
INDOOR UNIT
CONNECTING
NAME
E3E2
SYMBOL
NR11
RT11
RT12
IC141
52C
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
MODELS WIRING DIAGRAM
220-240V~
TB
2
N
GRN/YLW
❈
❈
NAME NAME
WHT
F
C2
BLU
RED
ORN
WHT
BLU
WHT
1
2
3
4
RED
ORN
WHT
BLK
SYMBOL
TB
DSAR
HIC1
C1
MF
TERMINAL BLOCK
SURGE ABSORBER
DC / DC CONVERTER
C
RED
MC
S
BLK
R
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN CAPACITOR
C2
NOTE:1. Use copper conductors only.(For field wiring)
2. “❈”show the terminals with a lock mechanism, so they cannot be removed when you pull
the lead wire.
Be sure to pull the wire by pushing the locking lever(projected part) of the terminal with a finger.
3. Symbols below indicate.
: Terminal block, : Connector
NAME
SYMBOL
MF
MC
NAME NAME
OUTDOOR FAN MOTOR
COMPRESSOR (INNER THERMOSTAT)
SYMBOL
TB
F
TERMINAL BLOCK
FUSE(2A)
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
19
6
REFRIGERANT SYSTEM DIAGRAM
MS-07NV - MS-09NV MS-07NV - MS-09NV -
INDOOR UNIT
Refrigerant pipe [9.52
(Option)
(with heat insulator)
Unit:mm
E1E1
E2E2
MU-07NV - MU-09NV MU-07NV - MU-09NV -
E1E1
E2E2
OUTDOOR UNIT
Stop valve
(with service port)
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT12
Refrigerant pipe
[6.35
(Option)
(with heat insulator)
MS-12NV - MS-12NV -
Refrigerant pipe [12.7
(Optional)
INDOOR UNIT
(with heat insulator)
Flared
connection
E2E1
Accumulator
Capillary tube
[1.6x1200
Outdoor
heat
exchanger
Compressor
Strainer
Refrigerant flow in cooling
MU-12NV - MU-12NV -
OUTDOOR UNIT
Unit:mm
E2E1
Indoor
heat
exchanger
Room temperature
thermistor
RT11
20
Indoor coil
thermistor
RT12
Flared
connection
Refrigerant pipe
[6.35
(Option)
(with heat insulator)
Stop valve
(with service port)
Stop valve
Compressor
Capillary tube
[1.8x800
Outdoor
heat
exchanger
Strainer
Refrigerant flow in cooling
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