Mitsubishi MSC-C07SV, MUH-C07SV, MSC-C09SV, MUH-C09SV, MSC-C12SV SERVICE MANUAL
...
HFC
utilized
R-407C
Revision
• Set temperature change of Operating Temperature of
Defrosting in MUH-C09SV-
• Change of refrigeration oil amount of
• Installed place change of defrost thermistor RT61 in
MUH-C07/C09/C12SV-
• Please void OB250.
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
E1
.
E1
MUH-C07/C09SV-
E1
.
.
SERVICE MANUAL
Wireless type
Models
MSC-C07SV MSC-C09SV MSC-C12SV MSH-C18SV -
(WH)
(WH)
(WH)
(WH)
REVISED EDITION-A
No. OB250
· MUH-C07SV -
· MUH-C09SV -
· MUH-C12SV -
· MUH-C18SV -
E1E1
E1E1
E1E1
E1E1
MSC-C07SV MSC-C09SV MSC-C12SV -
NOTE: This service Manual covers only change points.
•MSC-07/09/12RV - , MUH-07/09/12RV Please refer to the Service Manual OB227 REVISED EDITION-B for unchanged contents.
•MSH-18NV - , MUH-18NV - ➔ MSH-C18SV - , MUH-C18SV Please refer to the Service Manual OB229 REVISED EDITION-A for unchanged contents.
E1
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CONTENTS
1. TECHNICAL CHANGES···································2
2. SPECIFICATION················································5
3. NOISE CRITERIA CURVES ······························7
4. WIRING DIAGRAM ···········································8
5. REFRIGERANT SYSTEM DIAGRAM·············10
6. PERFORMANCE CURVES·····························11
7. SERVICE FUNCTIONS···································23
8. TROUBLESHOOTING ····································23
9. PARTS LIST ····················································24
➔ MSC-C07/C09/C12SV - , MUH-C07/C09/C12SV -
E1E1E4E4
E1E1E1E1
1
TECHNICAL CHANGES
The following are in common details.
1. Refrigerant type has changed from R-22(HCFC) to R-407C(HFC).
2. Rated voltage has changed from 220-240V to 220-230V.
3. Compressor has changed from one for R-22 to one for R-407C.
4. Jumper wire JPE for defrosting temperature change in deicer P.C.board is cut at factory shipping.
5. Refrigerant circuit has changed. (Accumulator has been removed.)
MSH-18NV - ➔ MSH-C18SV -
1. It has become impossible that MSH-C18SV- is connected to MXZ series as multi system units.
MUH-07RV - ➔ MUH-C07SV -
1. Path of heat exchanger has changed.
2. Operating Temperature of Defrosting has changed.
Starting of defrost : -3
Releasing of defrost : 3.1: or more ➔ 10.1: or more
3. Refrigerant oil has changed from MS56 to NEO22.
: or less ➔ 0: or less
MUH-09RV - ➔ MUH-C09SV -
1. Path of heat exchanger has changed.
2. Operating Temperature of Defrosting has changed.
Starting of defrost : -3: or less ➔ 4.3: or less
Releasing of defrost : 3.1: or more ➔ 14.7: or more
3. Refrigerant oil has changed from MS56 to NEO22.
MUH-12RV - ➔ MUH-C12SV -
1. Capillary tube has changed. {3.0X{1.8X300➔{3.0X{1.8X250, {3.0X{1.6X700➔{3.0X{1.6X800)
2. Operating temperature of High Pressure Protection has changed.
Outdoor fan motor ON : 48: ➔ 56:
Outdoor fan motor OFF: 52: ➔ 60:
3. Operating temperature of Defrosting has changed.
Starting of defrost : -3: or less ➔ 0: or less
Releasing of defrost : 3.1: or more ➔ 10.1: or more
4. Refrigerant oil has changed from MS56 to NEO22.
E1E4
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E1E1
E1E1
E1E1
MUH-18NV - ➔ MUH-C18SV -
1. Operating temperature of High Pressure Protection has changed.
Outdoor fan motor ON : 56: ➔ 52:
Outdoor fan motor OFF: 60: ➔ 56:
2. Operating temperature of Defrosting has changed.
Starting of defrost : -3: or less ➔ 0: or less
Releasing of defrost : 3.1: or more ➔ 10.1: or more
3. Refrigerant oil has changed from MS32N1 to NEO22.
E1E4
2
Lubricant
Refrigerant
New refrigerant
R-407C
R-32: R-125: R-134a (23%:25%:52%)
Non-azeotropic refrigerant
Not included
A1/A1
86.2
-43.6
0.9177
42.5
Non combustible
0
1530
From liquid phase in cylinder
Impossible
Incompatible oil
Non
Non
Previous refrigerant
R-22
R-22 (100%)
Single refrigerant
Included
A1
86.5
-40.8
0.94
44.4
Non combustible
0.055
1700
Gas phase
Possible
Compatible oil
Light yellow
Non
Refrigerant
Composition (Ratio)
Refrigerant handling
Chlorine
Safety group (ASHRAE)
Molecular weight
Boiling point (:)
Steam pressure [25:](Mpa [Gauge])
Saturated steam density [25:](Kg/K)
Combustibility
ODP w1
GWP w2
Refrigerant charge method
Additional charge on leakage
Kind
Color
Smell
w1:Ozone Destruction Parameter : based on CFC-11
w2 :Global Warmth Parameter : based on CO
2
INFORMATION FOR THE AIR CONDITIONER WITH R-407C REFRIGERANT
This room air conditioner adopts HFC refrigerant (R-407C) which is never destroy the ozone layer.
Pay attention following points.
1 Take sufficient care not to allow water and other contaminations to enter the R-407C refrigerant during storage and
installation, since it is more susceptible to contaminations than HCFC refrigerant.
2 Clean refrigerant pipings should be used.
3 Composition change may occur in R-407C since it is a mixed refrigerant. When charging, charge liquid refrigerant to
prevent composition change.
4 Be especially careful when managing the tools.
If dust, dirt, or water mixes in the refrigerant cycle, it may cause decrease of performance.
New Specification Previous Specification
The incompatible lubricant easily separates from refrigerant
and makes the layer in the upper inside the suction muffler.
The higher position of the returning oil hole enables to return
the lubricant of the upper layer to the compressor.
Suction muffler
Compressor
Compressor
Returning oil hole
Refrigerant
Conversion chart of refrigerant temperature and pressure
(MPa [Gauge])
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Saturated liquid pressure
0.0
-0.5
-30 -20 -10 0 10 20
R-407C
R-22
30
Since refrigerant and lubricant are compatible each other,
lubricant returns to the compressor through the lower
position returning oil hole.
Lubricant
NOTE : The unit of pressure has been changed to MPa on the
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/
international system of units(SI unit system).
40 50 60
(:)
3
Compressor
Suction muffler
Returning oil hole
Lubricant and Refrigerant
ff
[Gauge])
Electronic scale for
refrigerant charging
Refrigerant
gas cylinder
operating
valve
Refrigerant gas cylinder
for R-407C with siphon
Refrigerant (liquid)
Gage manifold
Outdoor unit
Indoor unit
Union
Liquid pipe
Gas pipe
Service port
Stop valve
Charge hose
1.Tools dedicated for the air conditioner with R-407C refrigerant
R-407C tools Can R-22 tools be used?
Gas leak detector
A gauge manifold with a sight glass is recommended for charging the
liquid refregerant.
Hose material have been changed to improve the pressure
resistance.
Dedicated for HFC refrigerant.
Description
Provided to prevent the back flow of oil. This adapter enables you to use
existing vacuum pumps.
It is difficult to measure R-407C with a charging cylinder because of
refrigerant bubbles due to high pressure and high-speed vaporization.
No
No
No
Yes
Yes
New
New
Gauge manifold
Charge hose
Torque wrench
Flare tool
Vacuum pump
adapter
Electronic scale for
refrigerant charging
The following tools are required for R-407C refrigerant. Some R-22 tools can be substituted for R-407C tools.
Do not use tools that are used with R-22 refrigerant in order to avoid mixing oils.
2.Refrigerant piping
Do not use copper pipes which are broken, deformed or discoloured.
In addition, be sure that the inner surfaces of the pipes are clean, free of hazardous sulfur and oxides, or have no dust/ dirt,
shaving particles, oil, moisture or any other contamination.
•If there is a large amount of residual oil inside the piping and joints, deterioration of the refrigerant oil will result.
3.Refrigerant oil
Apply the specific refrigeration oil (accessories) to the flare and the union seat surfaces.
4.Air purge
Use the vacuum pump for air purge to protect environments, and to avoid changing the composition of refrigerant.
5.Additional charge
For additional charging, charge the refrigerant with liquid phase slowly using a gas cylinder. If the refrigerant is charged with
gas phase, the composition of refrigerant will change.
If liquid refrigerant is rapidly charged at once, the compressor may be locked.
4
2
Indoor model
Function
Indoor unit power supply
Air flow(Hi)
Power outlet
Running current
Power input
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Thermistor RT11(at25:)
Thermistor RT12(at25:)
Outdoor model
Capacity
Dehumidification
Outdoor 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:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity(R-407C)
Refrigerating oil (Model)
Thermistor
RT61(at0:)
K /h
A
A
W
%
A
A
"
mm
kg
dB
rpm
k"
k"
kW
R/h
K /h
A
A
W
A(kW)
%
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
k"
MSC-C07SV -
E1
Single phase
220-230V,50Hz
10
0.17
35
93.6-89.5
—
0.17
RC4V19-BA
WHT-BLK 292
BLK-RED 325
850O278O191
9
5
3
10
10
MUH-C07SV -
E1
Single phase
220-230V,50Hz
1,620-1,668
10
—
18
0.28-0.29
RE-135VGSHT
650
C-R 4.21
C-S 5.93
RA6V23-EA
WHT-BLK 258
BLK-RED 385
780o540o255
33
47
620-645
1
0.85
350 (NEO22)
33.18
Cooling
474
36
950
2.2
0.8
3.27-3.17
715-725
99.4-99.4
2.99-2.88
2.93-2.89
Heating
504
35
1000
2.4
—
2.95-2.89
645-655
99.4-98.5
2.67-2.60
3.53-3.48
MSC-C09SV -
E1
Single phase
220-230V,50Hz
10
0.17
35
93.6-89.5
—
0.17
RC4V19-BA
WHT-BLK 292
BLK-RED 325
850O278O191
9
5
3
10
10
MUH-C09SV -
E1
Single phase
220-230V,50Hz
1,620-1,668
10
—
22
0.28-0.29
RE-174VGSHT
800
C-R 3.31
C-S 6.01
RA6V23-EA
WHT-BLK 258
BLK-RED 385
780o540o255
33
47
620-645
1
0.80
350 (NEO22)
33.18
Cooling
474
36
950
2.5
1.1
4.33-4.18
935-955
98.2-99.3
4.05-3.89
2.58-2.53
Heating
504
35
1000
3.0
—
4.05-3.96
885-905
99.3-99.4
3.77-3.67
3.26-3.19
MSC-C12SV -
E1
Single phase
220-230V,50Hz
10
0.19
40
95.7-91.5
—
0.19
RC4V19-BA
WHT-BLK 292
BLK-RED 325
850O278O191
10
5
3
10
10
MUH-C12SV -
E1
Single phase
220-230V,50Hz
1,656-1,704
10
—
34
0.36-0.37
RE-231VHSHT
1100
C-R 2.26
C-S 4.07
RA6V33-CA
WHT-BLK 176
BLK-RED 413
780o540o255
38
49
700-720
1
1.20
620 (NEO22)
33.18
Cooling
588
39
1020
3.4
1.6
5.78-5.73
1220-1240
95.9-94.1
5.42-5.36
2.70-2.66
Heating
642
39
1100
4.0
—
5.87-5.87
1240-1270
96.0-94.1
5.51-5.50
3.13-3.05
Electrical
data
Fan
motor
Special
remarks
Compressor
Electrical
data
Fan
motor
Special
remarks
Capacity
Coefficient of performance(C.O.P)
Outdoor unit power supply
Capacity
SPECIFICATION
NOTE: Test conditions are based on ISO 5151 (Refrigerant piping length (one way): 5m)
Cooling : Indoor DB27°C / WB19°C Heating : Indoor DB20°C
: Outdoor DB35°C / WB24°C : Outdoor DB 7°C / WB 6°C
5
Indoor model
Function
Indoor unit power supply
Air flow(Hi)
Power outlet
Running current
Power input
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level (Hi)
Fan speed (Hi)
Fan speed regulator
Thermistor RT11(at25:)
Thermistor RT12(at25:)
Outdoor model
Capacity
Dehumidification
Outdoor 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:)
Dimensions WOHOD
Weight
Sound level
Fan speed
Fan speed regulator
Refrigerant filling
capacity(R-407C)
Refrigerating oil (Model)
Thermistor
RT61(at0:)
K /h
A
A
W
%
A
A
"
mm
kg
dB
rpm
k"
k"
kW
R/h
K /h
A
A
W
A(kW)
%
A
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
k"
MSH-C18SV -
E1
Single phase
220-230V,50Hz
756
15
0.25
55
100.0-95.7
—
0.25
RA4V27-EF
WHT-BLK 184
BLK-RED 250
1,015O320O190
14
5
42
1,180
4
10
10
MUH-C18SV -
E1
—
2,142-2,196
15
—
55
0.39
PE-36VPEHT
1,600
C-R 1.06
C-S 2.03
RA6V50-OG
WHT-BLK 116
BLK-RED 111
850o605o290
54
52
810-828
1
1.70
1100 (NEO22)
33.18
Cooling
5.1
2.5
9.44-9.34
2,035-2,085
98.0-97.1
9.05-8.95
2.44-2.38
Heating
5.4
—
9.17-9.12
1,975-2,035
97.9-97.0
8.78-8.73
2.66-2.58
Electrical
data
Fan
motor
Special
remarks
Compressor
Electrical
data
Fan
motor
Special
remarks
Capacity
Coefficient of performance(C.O.P)
Outdoor unit power supply
Capacity
NOTE: Test conditions are based on ISO 5151 (Refrigerant piping length (one way): 5m)
Cooling : Indoor DB27°C / WB19°C Heating : Indoor DB20°C
: Outdoor DB35°C / WB24°C : Outdoor DB 7°C / WB 6°C
6
3
NOISE CRITERIA CURVES
MUH-C07SV MUH-C09SV -
90
E1
E1
NOTCH
FUNCTION
Hi
COOLING
HEATING
Test conditions, Cooling : DB 35: WB 24:
Heating : DB 7: WB 6:
SPL(dB(A)) LINE
47
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MUH-C12SV -
90
E1
NOTCH
FUNCTION
Hi
COOLING
HEATING
Test conditions, Cooling : DB 35: WB 24:
Heating : DB 7: WB 6:
SPL(dB(A)) LINE
49
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MSH-C18SV -
90
E1
NOTCH
Hi
FUNCTION
COOLING
HEATING
Test conditions, Cooling : DB 27: WB 19:
Heating : DB 20: WB - :
SPL(dB(A)) LINE
42
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MUH-C18SV -
90
E1
NOTCH
FUNCTION
Hi
COOLING
HEATING
Test conditions, Cooling : DB 35: WB 24:
Heating : DB 7: WB 6:
SPL(dB(A)) LINE
45
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.002 MICRO BAR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
7
4
SYMBOL
SR141
TB
SYMBOL
MV
NR11
RT11
RT12
SYMBOL
C11
F11
HIC1
MF
NAME
NAME NAME
INDOOR FAN CAPACITOR
FUSE(3.15A)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER FUSE)
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
CIRCUIT BREAKER
SR141
C11
RED
WHT
3
6
5
BRN
YLW
GRY
BLK
4
3
2
1
MF
121
CN
1
2
3
111
CN
112
CN
RT12
RT11
NR11
HIC1
TRANS
F11
ELECTRONIC CONTROL P.C. BOARD
CN211
TAB12
CN201
3
2
1
CN202
2
1
LD101T
151
CN
5
5
BRN
RED
BLU
WHT
BLK
BLU
BRN
TB
L
3
N
2
1
12V
TO OUTDOOR
UNIT
CONNECTING
POWER
SUPPLY
CORD
~/N 220-230V
50Hz
GRN/YLW
POWER MONITOR,
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
MV
PE
WIRING DIAGRAM
MSC-C07SV - MSC-C09SV - MSC-C12SV -
INDOOR UNIT
E1E1E1
MODELS WIRING DIAGRAM
NOTE:1. About the outdoor side 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
MUH-C07SV - MUH-C09SV - MUH-C12SV -
E1E1E1
OUTDOOR UNIT
FROM
INDOOR UNIT
CONNECTING
12V
3
N
TB2
RED
BLK
BRN
CIRCUIT BREAKER
POWER SUPPLY
~/N
TB1
L
N
BRN
BLU
220-230V
50Hz
SYMBOL
C1
C65
DSAR
F61
IC881
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(2A)
DC/DC CONVERTER
2.Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
NAME
GRN/YLW
PE
SYMBOL
MC
MF
NR61
RT61
SR61
COMPRESSOR(INNER PROTECTOR)
OUTDOOR FAN MOTOR(INNER PROTECTOR)
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
RT61
1
CN661
2
3
CN730
DSAR
TAB20
F61
IC881
TRANS
52C
4
BLU
NAME NAME
8
MODELS WIRING DIAGRAM
21S4
BLK
BLK
CN721
X62
NR61
3
DEICER P.C. BOARD
C1
RED
BLK
SR61
X62
WHT
SYMBOL
TB1,TB2
X62
21S4
52C
C65
CN711
S
TERMINAL BLOCK
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
1
2
3
4
MC
RED
WHT
BLK
C
MF
R
MSH-C18SV -
INDOOR UNIT
E1
MODEL WIRING DIAGRAM
TO OUTDOOR
UNIT
CONNECTING
12V
220-230V~
POWER
SUPPLY
CORD
~/N 220-230V
50Hz
PE
CIRCUIT BREAKER
SYMBOL
C11
DSAR
F11
F12
HIC1
NOTE:1. About the outdoor side 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
MUH-C18SV -
TB
L
BRN
BRN
3
2
WHT
N
BLU
BLU
F12
BRN
DSAR
GRN/YLW
RECEIVER
P.C.BOARD
RED
GRN/YLW
REMOTE
CONTROLLER
NAME
INDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(3.15A)
THERMAL FUSE(93:)
DC/DC CONVERTER
E1
MODEL WIRING DIAGRAM
BLU
BLU
2
1
LD1
CN CN
102
101
SYMBOL
IC141
MF
MV
NR11
RT11
4
52C
3
F11
BLU
CN
151
33
MV
DISPLAY
P.C.BOARD
CN201
3
1
ELECTRONIC CONTROL P.C BOARD
5
NAME NAME
HYBRID IC
INDOOR FAN MOTOR(INNER FUSE)
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
HIC1
TRANS
IC141
NR11
C11
SYMBOL
RT12
TB
52C
CN
112
CN
121
CN211
4
2
1
CN
111
3
BRN
YLW
GRY
WHT
RED
BLK
RT12
MF
RT11
INDOOR COIL THERMISTOR
TERMINAL BLOCK
CONTACTOR
OUTDOOR UNIT
12V
220-230V~
INDOOR UNIT
CONNECTING
FROM
GRN/YLW
SYMBOL
C1
C65
DSAR
F61
IC881
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(2A)
DC/DC CONVERTER
2.Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
NAME
TB
3
2
N
RED
WHT
WHT
BLU
DSAR
SYMBOL
NR61
MC
MF
RT61
SR61
RT61
CN730
CN661
1
F61
TAB21
IC881
TRANS
TAB20
WHT
DEICER P.C.BOARD
52C
NO
BLU
COMPRESSOR(INNER PROTECTOR)
OUTDOOR FAN MOTOR(INNER PROTECTOR)
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
21S4
BLK
BLK
CN721
X62
SR61
NR61
COM
C1
WHT
RED
BLK
NAME NAME
52C
VLT
CN720
X62
SYMBOL
VLT
C65
CN711
MC
S
TB
X62
21S4
52C
MF
RED
1
WHT
2
3
4
C
RED
1
ORN
2
WHT
3
BLK
R
BLK
4
TERMINAL BLOCK
REVERSING VALVE COIL RELAY
REVERSING VALVE COIL
CONTACTOR
9
5
REFRIGERANT SYSTEM DIAGRAM
MSC-C07SV MSC-C09SV -
Unit:mm
E1
E1
MUH-C07SV MUH-C09SV -
E1
E1
INDOOR UNIT
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT12
Refrigerant pipe [ 9.52
(Option)
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe [6.35
(Option)
(with heat insulator)
Muffler
Stop valve
(with service
port)
Strainer
Stop valve
Reversing valve
Defrost
thermistor
RT61
Strainer
Compressor
Capillary tube
[3.0x[1.6x600(MUH-C07SV)
[3.0x[1.6x400(MUH-C09SV)
Check valve
Capillary tube
[3.0x[1.4x600(MUH-C07SV)
[3.0x[1.4x550(MUH-C09SV)
Refrigerant flow in cooling
Refrigerant flow in heating
OUTDOOR UNIT
Outdoor
heat
exchanger
Capillary tube
[3.0x[1.4x800
(2 pcs)
Reversing valve coil
heating ON
cooling OFF
MSC-C12SV -
INDOOR UNIT
Indoor
heat
exchanger
Room temperature
thermistor
RT11
E1
Indoor coil
thermistor
RT12
Refrigerant pipe [12.7
(Option)
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe [6.35
(Option)
(with heat insulator)
Reversing valve
Muffler
Stop valve
(with service port)
Strainer
Stop valve
Strainer
Compressor
Capillary tube
[3.0x[1.6x800
Check
valve
MUH-C12SV -
OUTDOOR UNIT
Defrost
thermistor
RT61
Capillary tube
[3.0x[1.4x500(2pcs)
Capillary tube
[3.0x[1.8x250
Reversing valve coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Unit:mm
E1
Outdoor
heat
exchanger
10
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