Mitsubishi MSH-07NV - E1WH, MSH-07NV - E1, MUH-07NV -E1, MSH-09NV - E1WH, MSH-09NV - E1 Service Manual
...
This Servise Manual OB207 deals with MSH-07/09/12/18/24NV-E1,
MUH-07/09/12/18/24NV-E1, MSH-18NV-E2, and MUH-18NV-E2 in
OB176 REVISED EDITION-A issued in July in1997.
Therefore, please refer to OB207, not to OB176 REVISED
EDITION-A, for the above models.
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MSH-07NV MSH-09NV MSH-12NV MSH-18NV MSH-24NV MSH-07NV MSH-09NV MSH-12NV MSH-18NV MSH-24NV MSH-18NV -
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
· MUH-07NV -
· MUH-09NV -
· MUH-12NV -
· MUH-18NV -
· MUH-24NV -
· MUH-07NV -
· MUH-09NV -
· MUH-12NV -
· MUH-18NV -
· MUH-24NV -
· MUH-18NV -
No. OB207
E1E1
E1E1
E1E1
E1E1
E1E1
E2E2
E2E2
E2E2
E2E2
E2E2
E3E3
MSH-18NV MSH-18NV MSH-18NV -
Refer to the Service Manual OB185 when MSH-07/09/12NV- , MSH-07/09/12/18NV- , and MSH-18NVare connected with MXZ-32NV- as multi system units.
E1
E2
E3
CONTENTS
1. TECHNICAL CHANGES····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································6
4. OUTLINES AND DIMENSIONS ······················ 11
5. WIRING DIAGRAM ··········································15
6. REFRIGERANT SYSTEM DIAGRAM··············24
7. PERFORMANCE CURVES······························29
8. MICROPROCESSOR CONTROL ····················33
9. SERVICE FUNCTIONS ····································44
10. TROUBLESHOOTING······································47
11. DISASSEMBLY INSTRUCTIONS·····················60
12. PARTS LIST······················································70
13. OPTIONAL PARTS ····································BACK
E3E2E1
E1
1
TECHNICAL CHANGES
MSH-17NV - ➔MSH-07NV -
1. Indoor electronic control P.C.board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
MSH-09NV - ➔MSH-09NV -
1. Indoor electronic control P.C.board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
MSH-12NV - ➔MSH-12NV -
1. Indoor electronic control P.C.board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
MSH-18NV - ➔MSH-18NV -
1. Indoor electronic control P.C.board has changed.
However, it is compatible between and models.
2. Auto restart function is added.
MSH-24NV - ➔MSH-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
MSH-07NV - MSH-07NV MSH-09NV - MSH-09NV MSH-12NV - MSH-12NV -
E1
E1
E1
E2
E2
E2
MSH-18NV MSH-24NV MSH-18NV MSH-24NV MSH-18NV -
E1
E1
E2
E2
E3
(When the front panel is open)
MSH-07NV - MSH-09NV - MSH-12NV MSH-07NV - MSH-09NV - MSH-12NV -
MSH-18NV - MSH-24NV - MSH-18NV MSH-24NV - MSH-18NV -
E3E2
OUTDOOR UNIT
MUH-07NV MUH-09NV MUH-07NV MUH-09NV -
E1
E1
E2
E2
MSH-07NV - MSH-09NV - MSH-12NV -
E1E1E1
MSH-07NV - MSH-09NV - MSH-12NV -
E2E2E2
MSH-18NV - MSH-24NV - MSH-18NV MSH-24NV - MSH-18NV -
E2E1E1
MUH-12NV MUH-18NV MUH-18NV MUH-18NV -
E1E1E1
E2E2E2
E2E1E1
E3E2
E1
E1
E2
E3
MUH-24NV MUH-24NV -
E1
E2
3
MSH-07NV - MSH-09NV - MSH-12NV - MSH-18NV - MSH-18NV -
REMOTE CONTROLLER
E2E1E1E1E1
4
MSH-07NV - (Serial number 7000201T~) MSH-09NV - (Serial number 7000201T~)
MSH-12NV - (Serial number 7000001T~) MSH-24NV MSH-07NV - MSH-09NV MSH-12NV - MSH-18NV - (Serial number 7000001T~)
MSH-24NV - MSH-18NV -
E1E1
E1E1
E2E2
E2E2
E3E2
5
3
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:)
RT61(at0:)
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"
k"
MSH-07NV -
E1 E2
Single phase,220-240V,50Hz
INDOOR 492 OUTDOOR 1620
10
98-98
25
INDOOR 0.17 OUTDOOR 0.33
RH-135VGHT
650
C-R4.17 C-S5.75
RC4V19-AA
WHT-BLK292 BLK-RED324
RA6V29-CB
WHT-BLK218.0 BLK-RED423.7
815
275
183
780
540
255
8
34
5
37
47
1,100
790-820
4
1
0.85
10
10
33.18
MSH-09NV -
E1 E2
Single phase,220-240V,50Hz
INDOOR 492 OUTDOOR 1620
10
25
INDOOR 0.17 OUTDOOR 0.33
RH-174VGHT
800
C-R3.26 C-S5.82
RC4V19-AA
WHT-BLK292 BLK-RED324
RA6V29-CB
WHT-BLK218.0 BLK-RED423.7
815
275
183
780
540
255
8
34
5
37
48
1,100
790-820
4
1
0.85
10
10
33.18
Cooling
2.2
0.8
3.30-3.20
710-750
—
2.80-2.70
3.10-2.93
Heating
2.5
—
3.15-3.05
680-720
—
2.65-2.55
3.68-3.47
Cooling
2.5
1.1
4.10-4.00
880-920
—
98-96
3.60-3.50
2.84-2.72
Heating
3.1
—
4.30-4.10
920-940
—
97-96
3.80-3.60
3.37-3.30
SPECIFICATION
NOTE:Test conditions
6
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB24°C
Heating : Indoor DB20°C /WB15.5°C
Outdoor DB 7°C / WB 6°C
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
(Hi)
Special remarks
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:)
RT61(at0:)
MSH-12NV -
Cooling
E1 E2
Heating
Single phase,220-240V,50Hz
kW
R/h
K /h
A
A
W
A(kW)
%
A
A
A
3.4
1.6
INDOOR 558 OUTDOOR 2130-2244
10
5.75-5.90
1220-1300
5.95-6.10
1260-1350
—
96-92
96-92
35
5.21-5.36
5.41-5.56
INDOOR 0.17 OUTDOOR 0.37
2.78-2.61
3.17-2.96
RH-231VHAT
W
"
1100
C-R2.1 C-S3.9
RC4V19-AA
"
WHT-BLK292 BLK-RED324
"
mm
mm
mm
mm
mm
mm
kg
kg
RA6V40-EC or EE
WHT-BLK130 BLK-RED134.6
815
275
183
850
605
290
8
43
5
dB
dB
rpm
rpm
42
50
1230
780-820
4
1
kg
k"
k"
k"
1.15
10
10
33.18
4.0
—
—
MSH-18NV -
Cooling
E1 E2 E3
Heating
Single phase,220-240V,50Hz
5.1
2.5
5.4
—
INDOOR 756 OUTDOOR 2142
15
9.4-9.2
2030-2120
—
98-96
9.2-9.0
1980-2070
—
98-96
52-58
8.76-8.56
8.56-8.36
INDOOR 0.25 OUTDOOR 0.39
2.51-2.41
2.73-2.61
NH-36VMDT
1700
C-R1.2 C-S2.7
RA4V27-EA
WHT-BLK183.8 BLK-RED250.5
RA6V50-OD or OF
WHT-BLK116.4 BLK-RED111.0
1015
320
190
850
605
290
14
59
5
42
52
1180
810-845
4
1
1.8
10
10
33.18
NOTE:Test conditions
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB24°C
Heating : Indoor DB20°C /WB15°.5C
Outdoor DB 7°C / WB 6°C
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:)
RT61(at0:)
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"
k"
MSH-24NV -
E1 E2
Cooling Heating
Single phase,220-240V,50Hz
6.0 6.2
3.1 —
816
25
12.6-11.7 11.5-11.0
2720-2750 2470-2580
—
98
59
11.73-10.83 10.63-10.13
INDOOR 0.29 OUTDOOR 0.58
2.21-2.18 2.51-2.40
NH-47VMDT
2200
C-R 0.96 C-S 2.07
RA4V27-EC
WHT-BLK183.8 BLK-RED250.5
RA6V85-AA
WHT-BLK62.7 BLK-YLW30.2 YLW-RED62.9
1015
320
190
870
850
295
14
72
5
45
53
1,260
720-750
4
2
2.4
10
10
33.18
NOTE:Test conditions
Cooling : Indoor DB27°C / WB19°C
Heating : Indoor DB20°C /WB15.5°C
Outdoor DB35°C / WB24°C
Outdoor DB 7°C / WB 6°C
8
Refer to the Service Manual OB185 when MSH-07/09/12NV- , MSH-07/09/12/18NV- , and MSH-18NV- are
connected with MXZ-32NV- as multi system units.
Capacity
Capacity
Electrical data
Coefficient of performance(C.O.P)
Compressor
Indoor
fan motor
Outdoor
fan motor
Dimensions
Weight
Special remarks
NOTE:Test conditions
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
E1
Model
Function
Power supply
Width
Height
Depth
Width
Height
Depth
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
RT11(at25:)
RT12(at25:)
RT61(at0:)
MSH-07NV- (INDOOR UNIT)
E1 E2 E1 E2
Cooling Heating
Single phase,220-240V,50Hz
kW
R/h
K /h
A
A
W
A(kW)
%
A
A
A
— —
— —
492
10
0.17
35
—
94-86
—
—
0.17
—
—
W
"
—
—
RC4V19-AA
"
WHT-BLK292 BLK-RED324
"
mm
mm
mm
mm
mm
mm
kg
kg
—
—
815
275
183
—
—
—
8
—
5
dB
dB
rpm
rpm
37
—
1,100
—
4
—
kg
k"
k"
k"
—
10
10
—
Please refer to Service manual OB185 for capacity.
MSH-09NV- (INDOOR UNIT)
Cooling Heating
Single phase,220-240V,50Hz
— —
— —
492
10
0.17
35
—
94-86
—
—
0.17
—
—
—
—
RC4V19-AA
WHT-BLK292 BLK-RED324
—
—
815
275
183
—
—
—
8
—
5
37
—
1,100
—
4
—
—
10
10
—
E3E2E1
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB24°C
Heating : Indoor DB20°C /WB15.5°C
Outdoor DB 7°C / WB 6°C
9
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:)
RT61(at0:)
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"
k"
MSH-12NV- (INDOOR UNIT)
Cooling Heating
Single phase,220-240V,50Hz
— —
—
558
10
0.17
35
—
94-86
—
—
0.17
—
—
—
—
RA4V19-AA
WHT-BLK292 BLK-RED324
—
—
815
275
183
—
—
—
8
—
5
42
—
1,230
—
4
—
—
10
10
—
MSH-18NV- (INDOOR UNIT)
Cooling Heating
Single phase,220-240V,50Hz
— —
—
756
10
0.28
60
—
97-89
—
—
0.25
—
—
—
—
RA4V27-EA
WHT-BLK184 BLK-RED251
—
—
1015
320
190
—
—
—
14
—
5
42
—
1,180
—
4
—
—
10
10
—
Please refer to Service manual OB185 for capacity.
E1 E2 E2 E3
Refer to the Service Manual OB185 when MSH-07/09/12NV- , MSH-07/09/12/18NV- , and MSH-18NV- are
connected with MXZ-32NV- as multi system units.
E1
E3E2E1
NOTE:Test conditions
Cooling : Indoor DB27°C / WB19°C
Outdoor DB35°C / WB24°C
Heating : Indoor DB20°C /WB15.5°C
Outdoor DB 7°C / WB 6°C
10
4
OUTLINES AND DIMENSIONS
MSH-07NV - MSH-09NV - MSH-07NV - MSH-09NV -
INDOOR UNIT
Unit: mm
E2E2E1E1
MUH-07NV - MUH-09NV - MUH-07NV - MUH-09NV -
OUTDOOR UNIT
E2E2E1E1
11
MSH-12NV - MSH-12NV -
INDOOR UNIT
E2E1
Unit: mm
9.52
MUH-12NV - MUH-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.
12
MSH-18NV - MSH-24NV - MSH-18NV - MSH-24NV - MSH-18NV -
33 297297
450450
450450
352352438438
254254
2020
6060
4040
150150 648648 217217
55190190
995995
1901907757755050
320320
10151015
17.517.5
160160
5656
4holes 14holes 111✕✕2020
Indoor unitIndoor unit
Installation plateInstallation plate
Power supply cordPower supply cord
Lead to right 2mLead to right 2m
Lead to left 1mLead to left 1m
WWall hole all hole [[7575
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
Insulation Insulation [[2828
Drain hose Drain hose [[1616
Air outAir out
{
Air inAir in
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.
INDOOR UNIT
Unit: mm
E3E2E2E1E1
MUH-18NV - MUH-18NV - MUH-18NV -
E3E2E1
OUTDOOR UNIT
13
150
500
10
362(14-1/4)
39.5 27.5
Air outlet
E2E1
Service space
500
Terminal block for indoor and outdoor unit connection
Terminal block for power line
870(34-1/4)
302
Service panel
Ground
terminal
Handle for moving
4553
Knock out holes for
60
Refrigerant-pipe flared
connection [15.88 5/8F
Refrigerant-pipe flared
connection [9.52 3/8F
850(33-7/16)
553
403
441
352
337
Knock out hole
179 524
40 60524
for front piping
power line 2-[27
120
(refrigerant,drainage
and wiring)
104
2-12✕23 Oval holes
R20
R20
Knock out hole
for right piping
(refrigerant,drainage
and wiring)
45
42
33
(standard bolt M10)
Drain hole
Bottom
piping hole
25 max.
Standard bolt length
80
65
Front right piping holes-
17
R6
2-U-shaped
notched
holes
Drain hole
detail figures
12
MUH-24NV- MUH-24NV- Unit : mm (inch)
200
Note:Allow adequate
upper clearance
10
Front opening
10
Outdoor Unit-Necessary surrounding clearance
1715
185
(7-9/32)
Air intake
500(19-11/16)
185
(7-9/32)
330(13)
Air intake
14
7 24(1)295(11-5/8)
200
1000For 10 units or less
The upper side must be open.
Outdoor Unit-Necessary surrounding clearance
(Concentrated installation)
100 10
Outlet guide
installation hole
Side air intake
Handle
for moving
Handle for moving
Rear fresh
air intake
33
23
Rear piping hole
95
138
5
❈
❈
❈
❈
❈
❈
~/N
~
TO OUTDOOR
UNIT
CONNECTING
12VDC
L
3
2
N
;
FOR MULTI SYSTEM
WIRING DIAGRAM
MSH-07NV MSH-09NV -
E1
E1
MODELS WIRING DIAGRAM
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
MUH-07NV MUH-09NV -
NAME
E1
E1
MODELS WIRING DIAGRAM
SYMBOL
NR11
RT11
RT12
52C
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
CONTACTOR
NAME NAME
SYMBOL
TB
MV
SR11
TERMINAL BLOCK
VANE MOTOR
SOLID STATE RELAY
OUTDOOR UNIT
SYMBOL
C1
C65
52C
F61
MC
NOTE:1. Use copper conductors only.(For field wiring)
COMPRESSOR CAPACITOR
OUTDOOR FAN MOTOR CAPACITOR
CONTACTOR
FUSE(2A)
COMPRESSOR(INNER THERMOSTAT)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
❈
❈
❈
SYMBOL
MF
NR61
RT61
SR61
TB
❈
❈
NAME NAME
OUTDOOR FAN MOTOR
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
SYMBOL
X62
21S4
IC881
❈❈
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
DC/DC CONVERTER
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
15
MSH-12NV -
E1
MODEL WIRING DIAGRAM
INDOOR UNIT
~/N
FOR MULTI SYSTEM
TO OUTDOOR
UNIT
CONNECTING
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
~
12VDC
❈
❈
❈
❈
L
3
2
N
;
SYMBOL
NR11
RT11
RT12
52C
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
CONTACTOR
❈
❈
SYMBOL
TB
MV
SR11
TERMINAL BLOCK
VANE MOTOR
SOLID STATE RELAY
E1
MUH-12NV -
MODEL WIRING DIAGRAM
OUTDOOR UNIT
❈
❈
❈
SYMBOL
COMPRESSOR CAPACITOR
C1
C65
52C
F61
MC
NOTE:1. Use copper conductors only.(For field wiring)
OUTDOOR FAN MOTOR CAPACITOR
CONTACTOR
FUSE(2A)
COMPRESSOR(INNER THERMOSTAT)
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
16
MF
NR61
RT61
SR61
TB
❈
❈ ❈
OUTDOOR FAN MOTOR
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
NAME NAME
SYMBOL
X62
21S4
IC881
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
DC/DC CONVERTER
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
MSH-18NV -
E1
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:)
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
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
❈
❈
NAME NAME
SYMBOL
TB
DSAR
HIC1
TERMINAL BLOCK
SURGE ABSORBER
DC/DC CONVERTER
E1
MUH-18NV -
MODEL WIRING DIAGRAM
OUTDOOR UNIT
❈
❈
❈
SYMBOL
C1
C65
DSAR
F61
MC
NOTE:1. Use copper conductors only.(For field wiring)
COMPRESSOR CAPACITOR
OUTDOOR FAN MOTOR CAPACITOR
SURGE ABSORBER
FUSE(2A)
COMPRESSOR<INNER THERMOSTAT>
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
❈
❈
SYMBOL
MF
NR61
RT61
SR61
TB
NAME NAME
OUTDOOR FAN MOTOR
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
SYMBOL
X62
21S4
52C
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
17
MSH-24NV -
INDOOR UNIT
E1
MODEL WIRING DIAGRAM
220-240V~
220-240V~
TO OUTDOOR
UNIT
CONNECTING
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
TB
3
RED
❈
2
WHT
❈
L
BRN
N
❈
BLU
BLU
CIRCUIT BREAKER
BLU
RECEIVER
P.C.BOARD
F12
NF
2
1
BLU
3
CN201
4
3
1
WHT
CN
CN
101CN102
3 3
151
MV
DISPLAY
P.C.BOARD
ELECTRONIC CONTROL P.C BOARD
5
GRN/YLW
REMOTE
CONTROLLER
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 MOTOR 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
NAME
SYMBOL
NR11
RT11
RT12
IC141
52C
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
❈
4
3
52C
HIC1
TRANS
F11
SYMBOL
TB
HIC1
NF
CN
IC141
NR11
112
CN
111
3
CN
121
CN211
4
C11
2
1
TERMINAL BLOCK
DC/DC CONVERTER
NOISE FILTER
BRN
YLW
GRY
WHT
RED
BLK
RT12
RT11
MF
E1
MUH-24NV -
OUTDOOR UNIT
SYMBOL
COMPRESSOR CAPACITOR
C1
OUTDOOR FAN MOTOR CAPACITOR
C2
SURGE ABSORBER 1
DSAR
FUSE(2A)
F61
COMPRESSOR<INNER THERMOSTAT>
MC
NOTE:1. Use copper conductors only.(For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
MODEL WIRING DIAGRAM
6
1
YLW
YLW
5
BLK
BLK
4
3
WHT
WHT
12VDC
220-240V~
UNIT
TO INDOOR
CONNECTING
SYMBOL
MF
NR61
RT61
SR61
TB. TB2
MF
TB
3
❈
❈
2
F
WHT
N
❈
GRN/YLW
OUTDOOR FAN MOTOR
<INNER THERMOSTAT>
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
3
ORN
ORN
2
RED
RED
1
RED
WHT
ORN
RED
TB2
26F1
BLU
WHT
DSAR
VLT
WHT
BLU
NAME NAME
X1
5
C2
7
RED
8
BLU
VLT
52C1
CR
SYMBOL
X62
21S4
52C
52C1
X1
CN730
3
2
1
❈
X1
TAB20
YLW
YLW
WHT
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
COMPRESSOR CONTACTOR
FAN MOTOR RELAY
BRN
3
CZ
52C1
1
CN711
52C
❈
4
2
C1
❈
WHT
RED
BLK
1 2 3
F61
WHT
S
RT61
4
CN661
SR61
IC881
TRANS
DEICER
P.C. BOARD
C
MC
R
SYMBOL
21S4
BLK
BLK
CN721
X62
NR61
NAME
FUSE(2A)
F
THERMOSTAT (AIR FLOW CONTROL)
26F1
DC/DC CONVERTER
IC881
SURGE ABSORBER 2
CR
SURGE ABSORBER 3
CZ
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
18
MSH-07NV - MSH-09NV - MSH-12NV -
INDOOR UNIT
TO OUTDOOR
UNIT
CONNECTING
12VDC
220-240V~
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
CIRCUIT BREAKER
TO OUTDOOR
UNIT
CONNECTING
TB
L
3
2
N
FOR MULTI SYSTEM
12VDC
❈
BRN
❈
❈
❈
BLU
GRN/YLW
L
3
2
N
BRN
WHT
BLU
RED
F12
GUARD
PLATE
GRN/YLW
POWER MONITOR,
RECEIVER
P.C.BOARD
BLU
1
BLU
2
1
CN
122
LD101
REMOTE
CONTROLLER
BLU
CN
151
ELECTRONIC CONTROL P.C BOARD
5
5
MV
E2E2E2
CN201
3
2
1
MODELS WIRING DIAGRAM
SR11
HIC1
❈
3
52C
❈
4
NR11
TRANS
F11
C11
CN
112
CN
111
CN
121
3
2
1
CN211
3
BLK
GRY
YLW
BRN
WHT
RED
RT12
RT11
1
2
3
MF
4
5
6
SYMBOL
C11
F12
F11
MF
NOTE:1. For the outdoor electric wiring refer to the outdoor unit electric wiring diagram for servicing.
INDOOR FAN MOTOR CAPACITOR
FUSE(93:)
FUSE(3.15A)
INDOOR FAN MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
MUH-07NV - MUH-09NV -
OUTDOOR UNIT
NAME
TO INDOOR
UNIT
CONNECTING
12VDC
220-240V~
SYMBOL
NR11
RT11
RT12
52C
E2E2
TB
3
❈
RED
2
❈
N
❈
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
CONTACTOR
MODELS WIRING DIAGRAM
RT61
CN661
X62
F61
1
CN730
TRANS
52C
4
NR61
3
❈
DEICER P.C. BOARD
IC881
BLU
TAB20
WHT
❈
21S4
BLK
CN721
BLU
GRN/YLW
BLK
SR61
X62
SYMBOL
TB
HIC1
SR11
MV
C65
CN711
C1
TERMINAL BLOCK
DC/DC CONVERTER
SOLID STATE RELAY
VANE MOTOR
MF
RED
1
WHT
2
3
BLK
4
WHT
❈❈
RED
BLK
MC
S
C
R
SYMBOL
COMPRESSOR CAPACITOR
C1
FUSE(2A)
F61
COMPRESSOR<INNER THERMOSTAT>
MC
SOLID STATE RELAY
SR61
NOTE:1. Use copper conductors only.(For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
SYMBOL
OUTDOOR FAN MOTOR
MF
<INNER THERMOSTAT>
VARISTOR
NR61
DEFROST THERMISTOR
RT61
NAME NAME
SYMBOL
X62
21S4
52C
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
SYMBOL
C65
IC881
TB
NAME
FAN MOTOR CAPACITOR
DC/DC CONVERTER
TERMINAL BLOCK
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
19
MUH-12NV -
E2
OUTDOOR UNIT
MODEL WIRING DIAGRAM
TB
GRN/YLW
3
N
RED
❈
WHT
❈
BLU
❈
12VDC
220-240V~2
TO
INDOOR UNIT
CONNECTING
RT61
CN661 CN721
1
CN730
F61
IC881
❈
TAB20
❈
BLU
TRANS
52C
4
21S4
BLK
BLK
X62
NR61
❈
3
DEICER P.C.BOARD
C1
RED
BLK
SR61
X62
WHT
C65
CN711
MC
S
MF
RED
RED
C
WHT
BLK
R
1
2
3
4
ORN
WHT
BLK
1
2
3
4
SYMBOL
COMPRESSOR CAPACITOR
C1
FUSE(2A)
F61
COMPRESSOR<INNER THERMOSTAT>
MC
SOLID STATE RELAY
SR61
NOTE:1. Use copper conductors only.(For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
SYMBOL
MF
NR61
RT61
NAME NAME
OUTDOOR FAN MOTOR
<INNER THERMOSTAT>
VARISTOR
DEFROST THERMISTOR
SYMBOL
X62
21S4
52C
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
SYMBOL
C65
IC881
TB
NAME
FAN MOTOR CAPACITOR
DC/DC CONVERTER
TERMINAL BLOCK
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
20
MSH-18NV -
INDOOR UNIT
E2
MODEL WIRING DIAGRAM
❈
❈
❈
❈
~/N
FOR MULTI SYSTEM
TO OUTDOOR
UNIT
CONNECTING
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
MUH-18NV -
NAME
E2
MODEL WIRING DIAGRAM
12VDC
L
3
2
N
;
SYMBOL
NR11
RT11
RT12
IC141
52C
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
OUTDOOR UNIT
❈
❈
SYMBOL
TB
DSAR
HIC1
TERMINAL BLOCK
SURGE ABSORBER
DC/DC CONVERTER
❈
SYMBOL
MF
NR61
RT61
SR61
TB
❈
❈
NAME NAME
OUTDOOR FAN MOTOR
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
❈
❈
SYMBOL
C1
C65
DSAR
F61
MC
NOTE:1. Use copper conductors only.(For field wiring)
COMPRESSOR CAPACITOR
OUTDOOR FAN MOTOR CAPACITOR
SURGE ABSORBER
FUSE(2A)
COMPRESSOR<INNER THERMOSTAT>
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
SYMBOL
X62
21S4
52C
IC881
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
DC/DC CONVERTER
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
21
MSH-24NV -
INDOOR UNIT
E2
MODEL WIRING DIAGRAM
220-240V~
220-240V~
TO OUTDOOR
UNIT
CONNECTING
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
TB
3
RED
❈
2
WHT
❈
L
N
❈
BLU
BRN
BLU
BLU
CIRCUIT BREAKER
GRN/YLW
F12
2
1
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
CN
101
NF
3 3
3
4
CN
102
DISPLAY
P.C.BOARD
HIC1
BLU
CN201
3
1
CN
151
ELECTRONIC CONTROL P.C BOARD
WHT
4
52C
❈
3
TRANS
F11
5
MV
IC141
NR11
CN
112
CN
111
CN
121
CN211
4
C11
2
1
RT12
RT11
3
BRN
YLW
GRY
MF
WHT
RED
BLK
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
MUH-24NV -
OUTDOOR UNIT
NAME
SYMBOL
NR11
RT11
RT12
IC141
52C
E2
MODEL WIRING DIAGRAM
MF
TB
12VDC
220-240V~
TO INDOOR
UNIT
CONNECTING
3
❈
2
❈
WHT
N
❈
GRN/YLW
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
X1
6
1
YLW
RED
F
ORN
BLU
WHT
DSAR
YLW
BLK
WHT
ORN
RED
RED
TB2
5
4
3
2
1
BLK
WHT
ORN
RED
WHT
26F1
3
A1
VLT
WHT
BLU
5
C2
BLU
VLT
8RED
7
52C1
CR
X1
YLW
A2
WHT
BRN
CN730
3
2
1
❈
TAB20
YLW
3
1 2
C1
❈
CZ
52C1
CN711
52C
4
❈
WHT
RED
BLK
SYMBOL
TB
NF
HIC1
1 2 3
SR61
F61
WHT
MC
S
TERMINAL BLOCK
NOISE FILTER
DC/DC CONVERTER
RT61
21S4
BLK
BLK
CN721
CN661
4
X62
IC881
NR61
TRANS
DEICER
P.C. BOARD
C
R
SYMBOL
COMPRESSOR CAPACITOR
C1
FAN MOTOR CAPACITOR
C2
DSAR
CR
F61
MC
NOTE:1. Use copper conductors only.(For field wiring)
SURGE ABSORBER 1
SURGE ABSORBER 2
SURGE ABSORBER 3
CZ
FUSE(2A)
COMPRESSOR<INNER THERMOSTAT>
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
22
SYMBOL
MF
NR61
RT61
SR61
TB,TB2
F
26F1
NAME NAME
OUTDOOR FAN MOTOR
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
SYMBOL
X62
21S4
52C
52C1
IC881
FUSE(2A)
THERMOSTAT (AIR FLOW CONTROL)
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
COMPRESSOR CONTACTOR
DC/DC CONVERTER
FAN MOTOR RELAY
X1
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
MSH-18NV -
INDOOR UNIT
E3
MODEL WIRING DIAGRAM
TO OUTDOOR
UNIT
CONNECTING
12VDC
220-240V~
POWER
SUPPLY
CORD
~/N 220-240V
50Hz
CIRCUIT BREAKER
TO OUTDOOR
UNIT
CONNECTING
TB
L
3
2
N
FOR MULTI SYSTEM
12VDC
❈
BRN
❈
❈
❈
BLU
L
3
2
N
BRN
WHT
BLU
F12
RED
BLU
BLU
BRN
GRN/YLW
DSAR
GRN/YLW
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
2
1
LD1
CN CN
101
102
❈
4
CN201
BLU
3
1
CN
151
ELECTRONIC CONTROL P.C BOARD
52C
❈
3
5
33
MV
DISPLAY
P.C.BOARD
F11
HIC1
TRANS
IC141
NR11
CN
112
CN
121
CN211
4
C11
2
1
CN
111
RT12
3
BRN
YLW
GRY
MF
WHT
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:)
FUSE(3.15A)
INDOOR FAN MOTOR
VANE MOTOR
2. Use copper conductors only.(For field wiring)
3. Symbols below indicate.
: Terminal block, : Connector
MUH-18NV -
NAME
SYMBOL
NR11
RT11
RT12
IC141
52C
E3
MODEL WIRING DIAGRAM
NAME NAME
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
HYBRID IC
CONTACTOR
OUTDOOR UNIT
RT61
12VDC
220-240V~
INDOOR UNIT
CONNECTING
TO
GRN/YLW
TB
3
❈
❈
2
WHT
N
❈
BLU
RED
WHT
DSAR
CN730
TAB21
TAB20
WHT
CN661
1
F61
❈
IC881
❈
TRANS
DEICER P.C.BOARD
52C
NO
BLU
COM
X62
C1
21S4
BLK
BLK
CN721
NR61
SYMBOL
SR61
WHT
RED
BLK
TB
DSAR
HIC1
52C
VLT
CN720
X62
TERMINAL BLOCK
SURGE ABSORBER
DC/DC CONVERTER
VLT
RED
WHT
BLK
R
1
2
3
4
RED
ORN
WHT
BLK
C65
CN711
MC
S
1
2
3
4
C
MF
SYMBOL
C1
C65
DSAR
F61
MC
NOTE:1. Use copper conductors only.(For field wiring)
COMPRESSOR CAPACITOR
OUTDOOR FAN MOTOR CAPACITOR
SURGE ABSORBER
FUSE(2A)
COMPRESSOR<INNER THERMOSTAT>
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers.
3. Symbols below indicate.
: Terminal block, : Connector
4. “❈”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.
NAME
SYMBOL
MF
NR61
RT61
SR61
TB
NAME NAME
OUTDOOR FAN MOTOR
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
SYMBOL
X62
21S4
52C
IC881
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
DC/DC CONVERTER
1.Slide the sleeve.
2.Pull the wire while
pushing the locking
lever.
23
6
REFRIGERANT SYSTEM DIAGRAM
MSH-07NV MSH-07NV -
INDOOR UNIT
Unit:mm
E1
E2
Refrigerant pipe [ 9.52
(Option)
(with heat insulator)
Muffler
Reversing valve
(4-way valve)
MUH-07NV MUH-07NV -
OUTDOOR UNIT
E1
E2
Indoor
heat
exchanger
Room temperature
thermistor
RT11
MSH-09NV MSH-09NV -
INDOOR UNIT
Indoor coil
thermistor
RT12
E1
E2
Stop valve
Flared connection
Flared connection
Refrigerant pipe [6.35 Stop valve
(Option)
(with heat insulator)
Refrigerant pipe [9.52
(Option)
(with heat insulator)
(with service
port)
Accumulator
Strainer
Muffler
Defrost
thermistor
RT61
Check
valve
Capillary tube
[1.4x850
Reversing valve
(4-way valve)
Strainer
Capillary tube
[1.4x800 (2 pcs)
Capillary tube
[1.6x750
Reversing valve coil
(4-way valve coil)
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
MUH-09NV MSH-09NV -
OUTDOOR UNIT
Outdoor
heat
exchanger
Unit:mm
E1
E2
Indoor
heat
exchanger
Room temperature
thermistor
RT11
24
Indoor coil
thermistor
RT12
Flared connection
Flared connection
Refrigerant pipe [6.35 Stop valve
(Option)
(with heat insulator)
Stop valve
(with service
port)
Accumulator
Strainer
Defrost
thermistor
RT61
Capillary tube
[1.6x1300
Check
valve
Strainer
Capillary tube
[1.4x800 (2 pcs)
Capillary tube
[1.6x400
Reversing valve coil
(4-way valve coil)
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Outdoor
heat
exchanger
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