SPLIT-TYPE, AIR CONDITIONERS
SPLIT-TYPE, HEAT PUMP AIR CONDITION
NOTE: • This service Manual covers only change points.
SERVICE MANUAL
Wireless type
Models
MSC-07RV MSC-09RV MSC-12RV -
MSC-07RV MSC-09RV MSC-12RV -
MSC-07RV MSC-09RV MSC-12RV -
MSC-07RV MSC-09RV MSC-12RV -
MSC-07RV MSC-09RV MSC-12RV -
MSC-07RV MSC-09RV MSC-12RV -
Multi system type
MSC-07RV MSC-09RV MSC-12RV -
Inverter controlled multi system type
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
(WH)
· MU-07RV -
· MU-09RV -
· MU-12RV -
· MU-07RV -
· MU-09RV -
· MU-12RV -
· MU-07RV -
· MU-09RV -
· MU-12RV -
· MUH-07RV -
· MUH-09RV -
· MUH-12RV -
· MUH-07RV -
· MUH-09RV -
· MUH-12RV -
· MUH-07RV -
· MUH-09RV -
· MUH-12RV -
· MUX-10RV -
· MUX-18RV -
· MUX-24RV -
· MXZ-18RV -
Please refer to the Service Manual OB227 REVISED
EDITION-B for unchanged contents.
• Please refer to the following service manual when the
outdoor unit is the under mentioned model.
MXZ-32SV- : OB254
MXZ-18TV- : OB280
MUX-19/20/25TV- : OB284
• Please void OB252 REVISED EDITION-B.
E1
E1
E1
No. OB252
REVISED EDITION-C
E2E2
E2E2
E2E2
E3E3
E3E3
E3E3
E4E4
E4E4
E4E4
E2E2
E2E2
E2E2
E3E3
E3E3
E3E3
E4E4
E4E4
E4E4
E2E2
E2E2
E2E2
E2
MSC-07RV MSC-09RV MSC-12RV -
E4
E4
E4
CONTENTS
1. TECHNICAL CHANGES ····································3
2. PART NAMES AND FUNCTIONS······················8
3. SPECIFICATION···············································11
4. WIRING DIAGRAM ··········································13
5. REFRIGERANT SYSTEM DIAGRAM··············15
6. MICROPROCESSOR CONTROL ····················16
7. TROUBLESHOOTING······································16
8. PARTS LIST ·····················································27
REVISION
Page
Part name
E02 504 426 ➔ E02 141 083 REMOTE CONTROLLER HOLDER
Model
MSC-07/09/12RV-
E1
MSC-07/09/12RV-
E2
MSC-07/09/12RV-
E2
P27
Part number
P27 REMOTE CONTROLLER
E02 141 083 ➔ E02 504 426
Parts numbers have been partially modified.
1
1
2
3
4
5
6
7
8
9
10
11
12
13
The specifications of Indoor and Outdoor fan motor.
The data of Med. and Low speed are added to Indoor fan motor
specification
✼
✼The data value of indoor fan motor does not change if the indoor
unit is connected to a multi-type outdoor unit.
Remote controllers of COOL ONLY or COOL & HEAT
type are outdoor unit accessory.
Remote controller is included as an indoor unit accessory.
Two-way common remote controller
Two-way (using dip switch) remote controller
The specification of electronic control P.C. board is
compatible with remote controllers of COOL ONLY
and COOL & HEAT type.
Indoor electronic control P.C. board has changed
for two-way remote controller.
Indoor electronic control P.C. board has changed
for two-way remote controller.
Microprocessor programing flow has changed.
Electronic control P.C. board for E3 is interchangeable
with the one for E2 (except for MSC-12RV).
(New P.C. board) Indoor electronic control P.C. board has
changed.
Earth wire from the board is fixed to the electrical box with screw.
The shape of connector CN211 has changed. Indoor electronic
control P.C. board has been connected with
Power monitor, receiver P.C. board using connector.
When fan speed is set to"Auto", initial temperature difference
specitying changing fan speed has been improved in order to
reach the set temperature faster than E1, E2, and E3.
The mark of terminal block has changed. Terminal block for E4 is
interchangeable with the ones for E1, E2 and E3.
Winding resistance and shape of fan motor have changed.
Fan motor for E4 is not interchangeable with the ones for E1,
E2 and E3 except for MSC-12RV.
Fan motor rubber mount has changed because the shape of
fan motor was changed.
Circle shows the change point of the model.
Change point
No.
MSC-07RV-
E1
E2
E3
MSC-09RV-
E1
E2
E3
MSC-12RV-
E1
E2
E3
E4
E4
E4
TECHNICAL CHANGES
3
1
2
3
4
5
6
7
8
9
10
11
12
13
Remote controller of COOL ONLY type is outdoor unit accessory.
Remote controller is included as an indoor unit accessory.
Compressor contactor (52C) has changed. Compressor
contactor for E2,E3,E4 are interchangeable with the ones for E1.
Compressor has changed. Compressors for E3 and E4 are not
interchangeable with the ones for E1 and E2.
Compressor capacitor has changed. Due to different shape,
compressor capacitor for E4 is not interchangeable with the
ones for E1, E2 and E3.
Fuse has been removed.
Wiring diagram has changed because fuse was removed.
The shape of propeller fan has changed. The number of
propeller fan has changed from four to three. Propeller fan for E4
is not interchangeable with the ones for E1, E2 and E3.
The shape, diameter of axis and fan speed of fan motor have
changed. Fan motor for E4 is not interchangeable with the ones
for E1, E2 and E3.
Fan motor capacitor has changed. 1.5+➔ 2.0+
Fan motor capacitor for E4 is not interchangeable with the
ones for E1, E2 and E3(MU-12RV only).
Refrigerant filing capacity has changed. 0.85kg➔ 0.80kg
The method of troubleshooting for outdoor unit has changed.
The repairing procedure when outdoor unit does not stop
has been added to troubleshooting.
Circle shows that change points apply to the models.
Change point
No.
MU-07RV-
E1
E2
E3
MU-09RV-
E1
E2
E3
MU-12RV-
E1
E2
E3
E4
E4
E4
4
No.
Remote controller of COOL & HEAT type is outdoor unit
1
accessory.
Remote controller is included as an indoor unit accessory.
2
Accumulator has been removed.
3
Compressor has changed.
4
Compressor capacitor has changed. Due to different
shape, compressor capacitor for E4 is not interchangeable
5
with the ones for E1,E2 and E3.
The mark of terminal block has changed. Terminal block
6
for E4 is interchangeable with the ones for E1, E2 and E3.
Deicer P.C. board has changed. Jumper wire of compulsory
defrosting mode has changed.
Jumper wire for defrost setting has changed.
(JPC-JPE➔JRF-JRG) (Refer to page 26.)
7
The defrosting intervals which are changed by setting a short
circuit are the same as E1, E2, and E3.
Deicer P.C. board for E4 is not interchangeable with the
ones for E1, E2 and E3.
Wiring diagram has changed according to the following
reasons; the shape of connectors CN711 and CN661 has
8
changed and R.V. coil relay (X62) has changed into SSR (SR62).
X62 has changed into SR62 in Example of Operation
time chart in HEAT operation.
9
Compared to E1, E2, and E3, no change has been made about
the operational condition for defrosting and tne control system of
R.V. coil (timing of switching on/off).
The shape of propeller fan has changed. The number of
propeller fan has changed from four to three. Propeller
10
fan for E4 is not interchangeable with the ones for E1,E2, and E3.
The shape and diameter of axis of fan motor have changed.
The shape of connector has changed.
11
Fan motor and connector for E4 are not interchangeable
with those for E1, E2 and E3.
Refrigerant filling capacity has changed. 0.80kg➔ 0.85kg
12
The method of checking serial signal error for E4 has been added.
13
The method of troubleshooting for outdoor unit has changed.
14
The method for checking thermistor has been added to
15
troubleshooting.
The method for checking 4-way valve has been added to
16
troubleshooting.
The repairing procedure when outdoor unit does not stop has
17
been added to troubleshooting.
Change point
(JP607-R853➔JPDS-JPSG)
Circle shows that change points apply to the models.
MUH-07RV-
E1
E2
E3
E4
MUH-09RV-
E1
E2
E3
E4
MUH-12RV-
E1
E2
E3
E4
MUX-10RV MUX-18RV MUX-24RV MXZ-18RV -
E1
E1
E1
E1
MUX-10RV MUX-18RV MUX-24RV MXZ-18RV -
E2
E2
E2
E2
1. Remote controller is unprovided as the outdoor unit accessory.
5
COOL ONLY
COOL
& HEAT
TWO-WAY
REMOTE CONTROLLER
Model
MS-07/09/12RV-
E1
MSH-07/09/12RV-
E1
MS-07/09/12RV-
E2
MSH-07/09/12RV-
E2
✕
✕
✕
✕
w
w When HEAT mode is selected
by the remote controller of
COOL & HEAT type, the unit
will operate in FAN mode.
TWO-WAY
DIP switch
✕
MS-07/09/12RV-
E3
MSH-07/09/12RV-
E3
MS-07/09/12RV-
E4
MSH-07/09/12RV-
E4
✕
✕
Reference
162
19
58
Wireless remote controller
MSC-07RV MSC-09RV MSC-12RV MU-07RV MU-09RV MU-12RV MUH-07RV MUH-09RV MUH-12RV -
E1
E1
E1
E1
E1
E1
E1
E1
E1
MSC-07RV MSC-09RV MSC-12RV MU-07RV MU-09RV MU-12RV MUH-07RV MUH-09RV MUH-12RV -
E2
E2
E2
E2
E2
E2
E2
E2
E2
COOL ONLY REMOTE CONTROLLER TWO-WAY REMOTE CONTROLLER
COOL&HEAT REMOTE CONTROLLER TWO-WAY REMOTE CONTROLLER
1. Both of COOL ONLY and COOL & HEAT remote controller are unified into a two-way remote controller.
2. FAN mode operation is available in COOL ONLY unit. In this case the set room temperature
will be displayed on the remote controller, however, the room temperature can not be controlled by remote controller button.
HEAT operation is available in only HEAT & COOL type unit.
MSC-07RV MSC-09RV MSC-12RV -
E2
E2
E2
MSC-07RV MSC-09RV MSC-12RV -
E3
E3
E3
TWO-WAY REMOTE CONTROLLER TWO-WAY DIP SWITCH REMOTE CONTROLLER
• Outlines and dimensions have been changed.
6
• The way of remodelling individual operation of P.C Board of remote controller has changed.
No. 1 unit
No. 2 unit
No. 3 unit
No. 4 unit
1 unit operation
No modification
–
–
–
2 units operation
Same as at left
Solder J1
–
–
3 units operation
Same as at left
Same as at left
Solder J2
–
4 units operation
Same as at left
Same as at left
Same as at left
Solder both J1 and J2
A maximum of 4 indoor units with wireless remote controllers can be used in a room.
In this case, to operate each indoor unit individually by each remote controller, P.C. boards of remote controller must be
modified according to the number of the indoor unit.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below :
NOTE : For remodelling, take out the bat-
teries and press the
OPERATE/STOP(ON/OFF)button
twice or 3 times at first.
After finish remodelling, put back
the batteries then press the
RESET button.
The P.C. board has the print “J1” and “J2”. Solder “J1” and “J2” according to the number of indoor unit as shown
in Table 1. After modification, press the RESET button.
Table 1
REMOTE CONTROLLER (How to set the type)
This remote controller setting needs to be switched according to the type of air conditioner (COOL & HEAT or COOL
ONLY).
If the setting is incorrect, the air conditioner does not operate normally. Therefore, check if the setting corresponds to
the type of air conditioner. If it does not, correct the setting as shown below.
Slide switch
Type
The position
of the slide
switch
COOL ONLYCOOL & HEAT
7
Installation plate
Installation plate fixing screw 4 o 25 mm
Remote controller mounting hardware
Fixing screw for 3 3.5 o 16 mm
Battery (AAA) for remote controller
Felt tape (Used for left or left-rear piping)
Deodorizing filter
Air cleaning filter
Wireless remote controller
Drain socket: MUH type
Drain cap: MUH type
1
1
2
1
5
1
2
2
1
1
1
<Indoor unit>
Installation plate
Installation plate fixing screw 4 o 25 mm
Remote controller mounting hardware
Fixing screw for 3 3.5 o 16 mm
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
Deodorizing filter
Air cleaning filter
Drain socket
Drain cap
1
2
1
5
1
2
2
1
1
1
1
<Indoor unit>
<Outdoor unit: MUH type><Outdoor unit>
9
0
1
1
2
3
4
5
6
7
8
0
1
1
2
3
4
5
6
7
8
9
• How to replace batteries
Insert the negative pole
of the batteries first.
Check if the polarity of
the batteries are correct.
HEAT
/FAN
/
RESET button
HEAT
/FAN
/
Weak batteries may cause the remote controller malfunction.
In this case, replace the batteries to operate the remote controller normally.
1 Remove the front lid and insert batteries.
2 Press the RESET button.
Then re-attach the front lid.
NOTE : If the RESET button is not pressed, the remote controller may not operate correctly.
2
PART NAMES AND FUNCTIONS
ACCESSORIES
MSC-07RV - • MU-07RV MSC-09RV - • MU-09RV MSC-12RV - • MU-12RV MSC-07RV - • MUH-07RV MSC-09RV - • MUH-09RV MSC-12RV - • MUH-12RV -
MSC-07RV - • MU-07RV MSC-09RV - • MU-09RV MSC-12RV - • MU-12RV MSC-07RV - • MUH-07RV MSC-09RV - • MUH-09RV MSC-12RV - • MUH-12RV MSC-07RV - • MU-07RV MSC-09RV - • MU-09RV MSC-12RV - • MU-12RV MSC-07RV - • MUH-07RV MSC-09RV - • MUH-09RV -
E1E1
E1E1
E1E1
E1E1
E1E1
E1E1
MSC-12RV - • MUH-12RV MSC-07RV - • MU-07RV MSC-09RV - • MU-09RV MSC-12RV - • MU-12RV MSC-07RV - • MUH-07RV MSC-09RV - • MUH-09RV MSC-12RV - • MUH-12RV -
E2E2
E2E2
E2E2
E2E2
E2E2
E2E2
E3E3
E3E3
E3E3
E3E3
E3E3
E3E3
E4E4
E4E4
E4E4
E4E4
E4E4
E4E4
8
MSC-07RV - MSC-09RV - MSC-12RV -
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF)button
OPERATION SELECT button
FAN SPEED CONTROL button
ON-TIMER button
CLOCK SET button
HR. button
MIN. button
(TIME SET button)
TEMPERATURE buttons
VANE CONTROL button
OFF-TIMER button
RESET button
ON/OFF TOO
WARM
TOO
COOL
HR. MIN.
CLOCK
RESET
CLOCK
MODE
FAN
VANE
START
STOP
ECONO COOL button
ECONO COOL
I FEEL
COOL DRY
HEAT/FAN
6 00 1
1 00
AM
PM
REMOTE CONTROLLER
E2E2E2
9
MSC-07RV - MSC-09RV - MSC-12RV MSC-07RV - MSC-09RV - MSC-12RV -
REMOTE CONTROLLER
Signal transmitting section
E3E3E3
E4E4E4
Operation display section
OPERATE /STOP
(ON /OFF)button
Open the front lid.
ON/OFF
TOO
WARM
PM
AM
TOO
COOL
TEMPERATURE buttons
FAN SPEED CONTROL button
OPERATION SELECT button
ECONO COOL button
RESET button
TOO
ON/OFF
WARM
COOL
DRY
FAN
VANE
RESET
I FEEL
HEAT
/FAN
/
MODE
ECONO COOL
10
CLOCK
CLOCK
PM
AM
TOO
COOL
STOP
START
HR.
MIN.
OFF-TIMER button
ON-TIMER button
HR. button
MIN. button
(TIME SET button)
CLOCK SET button
VANE CONTROL button
3
Indoor model
Function
Indoor unit power supply
Air flow(High/Med. /Low )
Power outlet
Running current
Power input
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level(High/Med. /Low )
Fan speed (High/Med. /Low )
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(R22)
Refrigerating oil (Model)
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
MSC-07RV -
E4
Single phase
220-240V,50Hz
10
0.17
35
93.6-85.8
—
0.17
WHT-BLK 413
BLK-RED 334
850O278O191
9
5
3
10
10
MU-07RV -
E4
Single phase
220-240V,50Hz
10
—
2.77-2.71
0.21-0.22
RH-130VGCT
650
C-R 4.18
C-S 5.76
RA6V23-FC
WHT-BLK 353
BLK-RED 321
780o540o255
32
44-45
710-760
1
0.80
300 (MS56 )
Cooling
474/384 /294
RC4V19-LA
36/31 /26
950/790 /640
2.2
0.8
1620-1752
2.98-2.93
645-675
98.4-96.0
19
3.24-3.10
MSC-09RV -
E4
Single phase
220-240V,50Hz
10
0.17
35
RC4V19-LA
WHT-BLK 413
BLK-RED 334
850O278O191
9
5
3
10
10
MU-09RV -
E4
Single phase
220-240V,50Hz
10
—
RH-140VGCT
700
C-R 4.03
C-S 5.71
RA6V23-FC
WHT-BLK 353
BLK-RED 321
780o540o255
32
44-45
710-760
1
0.80
300 (MS56 )
Cooling
474/384 /294
93.6-85.8
—
0.17
36/31 /26
950/790 /640
2.5
1.1
1620-1752
3.43-3.28
745-775
98.7-98.5
20
3.22-3.06
0.21-0.22
3.21-3.09
MSC-12RV -
E4
Single phase
220-240V,50Hz
10
0.19
40
RC4V19-GA
WHT-BLK 375
BLK-RED 294
850O278O191
10
5
3
10
10
MU-12RV -
E4
Single phase
220-240V,50Hz
1.6
1848-1980
10
—
96.1-91.3
35
RH-220VHAT
1050
C-R 2.13
C-S 3.91
RA6V33-DC
WHT-BLK 301
BLK-RED 332
780o540o255
34
49
810-840
1
0.88
520 (MS56)
Cooling
588/468 /360
95.7-87.7
—
0.19
39/34 /29
1020/850 /690
3.5
6.01-6.16
1270-1350
5.72-5.84
0.29-0.33
2.67-2.52
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
ww
ww
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
SPECIFICATION
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C WB19°C
Indoor-Outdoor piping length 5m
w Reference value
Outdoor DB35°C WB24°C
11
Indoor model
Function
Indoor unit power supply
Air flow(High/Med. /Low )
Power outlet
Running current
Power input
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level(High/Med. /Low )
Fan speed(High/Med. /Low )
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(R22)
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-07RV -
E4
Single phase
220-240V,50Hz
10
0.17
35
93.6-85.8
—
0.17
RC4V19-LA
WHT-BLK 413
BLK-RED 334
850O278O191
9
5
3
10
10
MUH-07RV -
E4
Single phase
220-240V,50Hz
1620-1752
10
—
25
0.21-0.22
RH-130VGCT
650
C-R 4.18
C-S 5.76
RA6V23-FB
WHT-BLK 353
BLK-RED 321
788o540o255
33
47
710-760
1
0.85
300 (MS56)
33.18
Cooling
474/384 /294
36/31 /26
950/790 /640
2.2
0.8
3.13-3.03
675-715
98.0-98.3
2.92-2.81
3.10-2.93
Heating
504/414 /336
35/30 /26
1000/850 /710
2.5
—
2.98-2.88
645-685
98.4-99.1
2.77-2.66
3.68-3.47
MSC-09RV -
E4
Single phase
220-240V,50Hz
10
0.17
35
93.6-85.8
—
0.17
RC4V19-LA
WHT-BLK 413
BLK-RED 334
850O278O191
9
5
3
10
10
MUH-09RV -
E4
Single phase
220-240V,50Hz
1620-1752
10
—
25
0.21-0.22
RH-165VGCT
800
C-R 3.30
C-S 5.80
RA6V23-FB
WHT-BLK 353
BLK-RED 321
780o540o255
33
47
710-760
1
0.85
300 (MS56)
33.18
Cooling
474/384 /294
36/31 /26
950/790 /640
2.5
1.1
3.93-3.83
845-885
97.7-96.3
3.72-3.61
2.84-2.72
Heating
504/414 /336
35/30 /26
1000/850 /710
3.1
—
4.13-3.93
885-905
97.4-95.9
3.92-3.71
3.37-3.30
MSC-12RV -
E4
Single phase
220-240V,50Hz
10
0.19
40
95.7-87.7
—
0.19
RC4V19-GA
WHT-BLK 375
BLK-RED 294
850O278O191
10
5
3
10
10
MUH-12RV -
E4
Single phase
220-240V,50Hz
1656-1758
10
—
35
0.29-0.32
RH-220VHAT
1050
C-R 2.13
C-S 3.91
RA6V33-DB
WHT-BLK 301
BLK-RED 332
780o540o255
38
49
810-840
1
1.19
520 (MS56)
33.18
Cooling
588/468 /360
39/34 /29
1020/850 /690
3.4
1.6
5.56-5.71
1180-1260
96.5-91.9
5.27-5.39
2.79-2.62
Heating
642/516 /402
39/34 /29
1100/920 /750
4.0
—
5.76-5.91
1220-1310
96.3-92.4
5.47-5.59
3.17-2.96
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
ww
ww
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
w
NOTE: Test conditions are based on ISO 5151.
Cooling : Indoor DB27°C WB19°C Heating : Indoor DB20°C
Indoor-Outdoor piping length 5m
Outdoor DB35°C WB24°C Outdoor DB 7°C / WB 6°C
w Reference value
12
4
SYMBOL
TB
T11
SYMBOL
NR11
RT11
RT12
SR141
SYMBOL
C11
F11
MF
MV
NAME
NAME NAME
INDOOR FAN CAPACITOR
FUSE(3.15A)
INDOOR FAN MOTOR(INNER FUSE)
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMIST OR
INDOOR COIL THERMISTOR
SOLID STATE RELAY
TERMINAL BLOCK
TRANSFORMER
CIRCUIT BREAKER
SR141
C11
RED
WHT
3
6
5
BRN
YLW
GRY
BLK
4
3
2
1
MF
121
CN
1
3
5
111
CN
112
CN
RT12
RT11
NR11
T11
TRANS
F11
ELECTRONIC CONTROL P.C. BOARD
CN211
TAB12
CN201
3
2
1
CN202
2
1
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 220-240V
50Hz
GRN/YLW
POWER MONITOR,
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
MV
FOR
MUH OR
MXZ TYPE
FOR
MU OR
MUX TYPE
12V
PE
LD103
101
CN
GRN
WIRING DIAGRAM
MSC-07RV MSC-09RV MSC-12RV -
E4
E4
E4
INDOOR UNIT
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
13
SG79J412H01
MU-07RV MU-09RV MU-12RV -
E4
E4
E4
OUTDOOR UNIT
FROM
INDOOR UNIT
CONNECTING
POWER SUPPLY
~/N
220-240V
50Hz
MODELS WIRING DIAGRAM
TB2
2
WHT
1
PE
TB1
L
N
BLK
BRN
BLU
GRN/YLW
12V
CIRCUIT BREAKER
NO
52C
52C
COM
BRN
WHT
WHT
C2
DSAR
C1
WHT
BLU
RED
RED
BLK
1
2
3
WHT
BLK
RED
C
MC
S
R
MF
SYMBOL
C1
C2
DSAR
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
2.Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
MUH-07RV MUH-09RV MUH-12RV -
OUTDOOR UNIT
FROM
INDOOR UNIT
CONNECTING
12V
POWER SUPPLY
~/N
220-240V
50Hz
NAME
E4
E4
E4
MODELS WIRING DIAGRAM
CIRCUIT BREAKER
SYMBOL
TB1,TB2
TB2
3
N
TB1
L
N
PE
MC
MF
RED
BLK
BRN
BRN
BLU
NAME NAME
COMPRESSOR(INNER PROTECTOR)
OUTDOOR FAN MOTOR(INNER FUSE)
TERMINAL BLOCK
21S4
RT61
DSAR
BLU
1
2
3
F61
TAB20
CN661
CN730
T61
52C
4
CN721
NR61
3
DEICER P.C.BOARD
C1
GRN/YLW
SR62
RED
BLK
SYMBOL
52C
SR61
WHT
S
COMPRESSOR CONTACTOR
VG79B132H01
MF
CN711
WHT
1
BLK
2
RED
3
C65
C
MC
R
SYMBOL
C1
COMPRESSOR CAPACITOR
C65
DSAR
F61
MC
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
OUTDOOR FAN CAPACITOR
SURGE ABSORBER
FUSE(2A)
COMPRESSOR(INNER PROTECTOR)
2.Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
NAME
SYMBOL
MF
NR61
RT61
SR61, SR62
T61
NAME NAME
OUTDOOR FAN MOTOR(INNER FUSE)
VARISTOR
DEFROST THERMISTOR
SOLID STATE RELAY
TRANSFORMER
14
SYMBOL
TB1,TB2
21S4
52C
TERMINAL BLOCK
R.V. COIL
COMPRESSOR CONTACTOR
SG79B111H01
5
REFRIGERANT SYSTEM DIAGRAM
MSC-07RV - MSC-07RV MSC-09RV - MSC-09RV -
Unit:mm
E4E3
E4E3
MUH-07RV - MUH-07RV MUH-09RV - MUH-09RV -
E4E3
E4E3
INDOOR UNIT
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT12
Refrigerant pipe [ 9.52
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe [6.35
(with heat insulator)
MSC-12RV - MSC-12RV -
OUTDOOR UNIT
4-way valve
Muffler
Stop valve
(with service
port)
Strainer
Stop valve
E4E3
Capillary tube
[3.0x[1.4x600(MUH-07)
[3.0x[1.4x550(MUH-09)
Strainer
Check valve
Defrost
thermistor
RT61
Compressor
Capillary tube
[3.0x[1.6x600(MUH-07)
[3.0x[1.6x400(MUH-09)
Refrigerant flow in cooling
Refrigerant flow in heating
Outdoor
heat
exchanger
Capillary tube
[3.0x[1.4x800 (2 pcs)
R.V. coil
heating ON
cooling OFF
MUH-12RV - MUH-12RV -
Unit:mm
E4E3
INDOOR UNIT
Indoor
heat
exchanger
Room temperature
thermistor
RT11
Indoor coil
thermistor
RT12
Refrigerant pipe [12.7
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe [6.35
(with heat insulator)
4-way valve
Muffler
Stop valve
(with service port)
Strainer
Stop valve
Strainer
Compressor
Capillary tube
[3.0x[1.6x700
Check
valve
OUTDOOR UNIT
Defrost
thermistor
RT61
Capillary tube
[3.0x[1.8x300
R.V. coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Outdoor
heat
exchanger
Capillary tube
[3.0x[1.4x500(2pcs)
15
6
RED
BLK
YLW
GRY
BRN
WHT
FUSE
WHTRED
BLK
MAIN
AUX.
FUSE
MICROPROCESSOR CONTROL
MSC-07RV - MU-07RV - MUH-07RV MSC-09RV - MU-09RV - MUH-09RV MSC-12RV - MU-12RV - MUH-12RV -
E4E4E4
E4E4E4
E4E4E4
6-1. 11-1. COOL ( ) OPERATION
1. Indoor fan speed control
Indoor fan operates continuously at the set speed by FAN SPEED CONTROL button regardless of thermostat’s OFF-ON.
In Auto the fan speed is as follows.
MSC-07RV - MSC-07RV - MSC-07RV MSC-09RV - MSC-09RV - MSC-09RV MSC-12RV - MSC-12RV - MSC-12RV -
E3E2E1
E3E2E1
E3E2E1
Initial temperature difference
Fan speed
Room temperature minus set temperature : 2 degrees or more································High
Room temperature minus set temperature : Between 1 and 2 degrees····················Med.
Room temperature minus set temperature : less than 1 degree································Low
MSC-07RV MSC-09RV MSC-12RV -
E4
E4
E4
Initial temperature difference
Fan speed
Room temperature minus set temperature : 1.7 degrees or more·····························High
Room temperature minus set temperature : Between 1 and 1.7 degrees·················Med.
Room temperature minus set temperature : less than 1 degree································Low
Difference between room
temperature and set temperature during operation
4 deg.
1 deg.
2 deg.
1.7 deg.
Difference between room
temperature and set temperature during operation
3 deg.
1.7 deg.
1 deg.
7
TROUBLESHOOTING
7-1. Trouble criterion of main parts
E4
MSC-07RV MSC-09RV MSC-12RV -
Part name
Indoor fan
motor(MF)
INNER FUSE
136I3 CUT OFF
Outdoor fan
motor(MF)
INNER FUSE
163I3 CUT OFF
MU-07RV -
E4
MU-09RV -
E4
MU-12RV -
Motor part
WHT-BLK
BLK-RED
WHT-BLK
BLK-RED
E4
MUH-07RV -
E4
MUH-09RV -
E4
MUH-12RV -
E4
E4
E4
Check method and criterion Figure
Measure the resistance between the terminals with a tester.
(Coil wiring temperature10°C ~ 30°C)
Color of
lead wire
WHT-BLK
BLK-RED
MSC-07/09RV-
396 ~ 430Ω
320 ~ 348Ω
Normal
E4
MSC-12RV-
396 ~ 430Ω
320 ~ 348Ω
E4
Measure the resistance between the terminals with a tester.
(Coil wiring temperature –10°C ~ 40°C)
Color of
lead wire
Color of
lead wire
MU-07/09RV-
311 ~ 381
283 ~ 347
MUH-07/09RV-
311 ~ 381
283 ~ 347
Normal
E4
Ω
Ω
Normal
E4
Ω
Ω
MU-12RV-
265 ~ 325
292 ~ 359
MUH-12RV-
265 ~ 325
292 ~ 359
E4
Ω
Ω
E4
Ω
Ω
Abnormal
Open or short-circuit
Abnormal
Open or short-circuit
Abnormal
Open or
short-circuit
16
When OPERATION INDICATOR lamp flashes 3-time.
Indoor fan motor doesn’t operate.
A
Check of indoor fan motor
Turn OFF the power supply.
Check connector CN211 visually.
No
Re-connect the lead wires.
Are lead wires connected?
Disconnect lead wires from connector CN211 on indoor electronic control P.C. board.
Measure resistance between lead wires No.1 and No.5 and then No.3 and No.5.
Yes
Is resistance 0 (short circuit) or ∞ (open circuit)?
Yes ( 0 or ∞ )
Repair or replace the indoor fan motor.
Is soldered point of the connector
correctly soldered?
Turn ON the power supply. Stop it if the unit oper-
ate. Insert screwdriver into air outlet to rotate
indoor fan motor slowly for 1 revolution or over, and
No
(others)
measure voltage No.2(+) and No.3(-) on CN121.
No
Does voltage repeat 0V DC and 5V DC?
Replace the indoor electronic control P.C. board.
Yes
No
Re-solder it.
Yes
Indoor unit operates by pressing the EMERGENCY OPERATION switch, but doesn’t operate with the remote controller.
Check of remote controller and receiver P.C. board
B
wCheck the remote controller is exclusive for this air conditioner.
Switch on the remote controller.
Is LCD display on the remote controller displayed?
Yes
Remove batteries, then set them back and
press the RESET button. Check if the unit
operates with the remote controller.
Does the unit operate with the
remote controller?
Yes
Ok
Measure the voltage between receiver P.C. board connector CN302
No.3
No
(not clear)
No
(–)
and No.5
Replace the batteries.
Turn on a radio to AM and press switch on
the remote controller.
Is noise heard from radio?
Yes
Are there any fluorescent lights of
inverter or rapid-start type within
the range of 1m?
No
MSC-07/09/12RV- , ,
MSC-07/09/12RV-
(+)
when the remote controller button is pressed.
Is the voltage approx. 4V DC?
Replace the receiver P.C. board.
E4
No(5V or 0V DC)
No
Yes
Yes
Replace the remote controller.
• Re-install the unit away from lights.
• Attach a filter on receiving part.
E3E2E1
Replace the indoor electronic control
P.C. board.
17
The unit doesn’t operate with the remote controller.
Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch.
Check of indoor electronic control P.C. board
C
Check the both “parts side” and “pattern
side” of indoor electronic control P.C.
board visually.
Turn OFF the power supply.
Remove indoor fan motor connector CN211 and
vane motor connector CN151 from the indoor electronic
control P.C. board and turn ON the power supply.
Does the unit operate with the remote controller?
Does the OPERATION INDICATOR lamp light up
by pressing the EMERGENCY OPERATION switch?
Yes
Turn OFF the
power supply.
Be sure to check both resistances.
Replace the vane
motor.
Yes
Is winding
resistance of
vane motor 0 "?
Is winding
resistance of
fan motor 0 "?
Yes
Replace the fan
motor.
No
No
No
Turn OFF the
power supply.
Be sure to check both fuse
and varistor in any case.
Replace the fuse.
Yes
Is fuse(F11) blown?
Is varistor(NR11) burnt?
Yes
Replace the varistor.
No
Replace the indoor
electronic control
P.C. board.
No
18
Compressor and / or outdoor fan motor doesn’t operate.
Yes
Is there 220-240V AC
between 1–2 on the outdoor
terminal block (TB2)?
Compressor
doesn't operate.
Operate the unit in COOL mode by pressing the
EMERGENCY OPERATION switch.
3-minute time delay works.
Test run operation operates for 30 minutes.
Outdoor fan motor
doesn't operate.
Check the power supply, and
rectify the connecting wire.
Check the indoor electronic
control P.C. board, and rectify
the indoor and outdoor
connecting wire.
Start
No
No
Yes
Is there 220-240V AC between L–N
on the outdoor terminal block (TB1)?
Is the switch SW2-2 on the
indoor electronic control
P.C. board set to MU type?
No
Change the switch SW-2-2
on the indoor electronic control
P.C. board to MU type.
Yes
Is there 220-240V AC between L–N
on the outdoor terminal block (TB1)?
Is there 12V DC between
1–2 on the outdoor
terminal block (TB2)?
No
Check the indoor electronic
control P.C. board, and rectify
the indoor and outdoor
connecting wire.
Yes
Is there 220-240V AC between COM
on the compressor contactor (52C) and
N on the outdoor terminal block (TB1)?
Yes
Check the compressor and
compressor contactor, and
rectify the connecting wire.
Replace the compressor
contactor (52C).
No
Yes
Is there 220-240V AC between COM
on the compressor contactor (52C) and
N on the outdoor terminal block(TB1)?
Yes
Check the outdoor fan motor
and outdoor fan capacitor,
and rectify the connecting wire.
No
Check the power supply, and
rectify the connecting wire.
Replace the compressor
contactor (52C).
No
E1
E2
E3
MU-07/09/12RV- , ,
Is fuse "F" (2A) blown?
No
Replace the fuse "F" (2A).
Yes
D
Check of outdoor unit
<MU-07/09/12RV>
19
Compressor and / or outdoor fan motor doesn’t operate.
Yes
Compressor
doesn't operate.
Yes
Yes
Is there 220-240V AC between
3 on the compressor contactor
(52C) and N on the outdoor
terminal block (TB1)?
Operate the unit in COOL or HEAT mode by pressing the
EMERGENCY OPERATION switch.
3-minute time delay works.
Test run operation operates for 30 minutes.
Outdoor fan motor
doesn't operate.
No
Rectify the indoor and
outdoor connecting wire.
Rectify the connecting wire.
Check the compressor and compressor
capacitor, and rectify the connecting wire.
Start
Yes
Is there 220-240V AC between 4
on the compressor contactor (52C) and
TAB20 on the deicer P.C. board?
Is there 220-240V AC between L–N
on the outdoor terminal block (TB1)?
Replace the
deicer P.C. board.
Replace the
deicer P.C. board.
No
No
Yes
Yes
No
Check the outdoor fan motor
and rectify the connecting
wire.
Is there 220-240V AC between 4 on
the compressor contactor (52C) and
TAB 20 on the deicer P.C. board?
Replace the
deicer P.C. board.
No
Yes
Rectify the indoor and
outdoor connecting wire.
Rectify the connecting wire.
Is there 220-240V AC between L–N
on the outdoor terminal block (TB1)?
No
No
Is the switch SW2-2 on the
indoor electronic control
P.C. board set to MUH type?
No
Change the switch SW-2-2
on the indoor electronic control
P.C. board to MUH type.
Yes
+
–
Is there 5V DC between J8 –J9
(MUH-07/09/12RV- , , )/
J205 –J101 (MUH-07/09/12RV- )
on the deicer P.C. board?
+
–
E1
E2
E3
E4
+
–
Is there 5V DC between J8 –J9
(MUH-07/09/12RV- , , )/
J205 –J101 (MUH-07/09/12RV- )
on the deicer P.C. board?
+
–
E1
E2
E3
E4
D
Check of outdoor unit
<MUH-07/09/12RV>
20
E
How to check mis-wiring and serial signal error
Outdoor unit does not work.
Start
Turn OFF the power supply(indoor/outdoor unit).
w 1 Set the switch(SW2-2) on indoor electronic control P.C. board to
MU or MUX type, when the outdoor unit is MU or MUX type.
If the setting is MUH or MXZ type, the unit does not work.
w 2 Short circuit of JPG and JPS on the indoor electronic control
P.C. board enables self -check to be displayed in 3 seconds.
Is the outdoor unit "MUH or MXZ" type?
Yes
•Turn ON the power supply(indoor/outdoor unit).
•Press once EMERGENCY OPERATION switch.
3 min. later, what self-check result is
displayed on OPERATION INDICATOR
lamp on indoor unit?
w 2
Mis-wiring is indicated.
No
Serial signal error is indicated.
(0.5-sec. ON, 2.5-sec. OFF)
Set the switch(SW2-2) on the indoor electronic
control P.C. board to MU or MUX type.
Does the unit operate?
Refer to the
"Instruction of
troubleshooting."
(0.5-sec. ON, 0.5-sec. OFF)
Make them sure.
Yes
Is this mis-wiring, poor contact,
or disconnection of wire?
No
1. Turn OFF the power supply(indoor/outdoor unit) and disconnect indoor and outdoor connecting wire on indoor side.
2. Short-circuit between indoor terminal block N and 3.
3. Turn ON the power supply(indoor unit) and press once EMERGENCY OPERATION switch.
Is there 20V DC between both ends of
R132 on indoor electronic control P.C.
board ?
( By tester, the stylus is between 0 ~ 20V. )
Yes
•Turn OFF the power supply(indoor unit).
•Connect ON indoor and outdoor connecting wire.
Turn ON the power supply(outdoor unit).
No
Replace the indoor electronic
control P.C. board.
No
Yes
w1
Ok
Is the outdoor unit "MUH" type?
Yes
Is there 220-240V AC between outdoor
terminal block L-N (TB1)?
Is there 5V DC between J8 - –J9 + (MUH-07/09/12RV- , , )/
J205 + –J101 - (MUH-07/09/12RV- ) on the deicer P.C. board?
Turn ON the power supply(indoor unit).
During EMERGENCY OPERATION,
is there 10V DC between both ends
of R601?
(By tester, the stylus is between 5 ~10V)
Replace the deicer P.C. board.
Yes
E4
Yes
Yes
No
No
E2
E1
E3
No
Refer to T Check of mis-wiring
or mis-piping.
Check the outdoor power supply,
power supply cord and
connection.
No
Replace the deicer P.C. board.
Make the wiring between CN730
on the deicer P.C. board and
outdoor terminal block correct.
21
Compressor and / or outdoor fan motor doesn’t stop.
V
Check of outdoor unit
Start
Turn OFF the power supply.
After 1 minute, turn ON
power supply again.
Does compressor or
outdoor fan motor stop?
Yes
Ok
No
<MU-07/09/12RV>
Is there 12V DC between
1–2 on the outdoor
terminal block (TB2)?
Yes
Replace the indoor
electoronic control
P.C. board.
Compressor and / or outdoor fan motor doesn’t stop.
V
Check of outdoor unit
Start
Turn OFF the power supply.
After 1 minute, turn ON
power supply again.
<MUH-07/09/12RV>
Is there 220-240V AC between COM on
No
the compressor contactor (52C) and N on
the outdoor terminal block (TB1)?
Rectify the connecting wire.
No
Yes
Replace the compressor
contactor(52C).
Does compressor stop?
Yes
Ok
Does outdoor fan motor stop?
Yes
Ok
Is there 220-240V AC between 3 on
No
the compressor contactor (52C) and N on
the outdoor terminal block (TB1)?
Yes
Replace the
deicer P.C. board.
No
Replace the
deicer P.C. board.
No
Rectify the connecting wire.
22
When OPERATION INDICATOR lamp flashes 6-time.
Thermistors in the outdoor unit are abnormal.
W
Check of outdoor thermistor
Start
Defrost thermistor (RT61)
Measure
Turn OFF the
power supply.
resistance
between CN 661
1 and 2.
<MUH-07/09/12RV>
Does the resistance
of thermistor have
the characteristics ?
No
Replace the
thermistor.
Re-connect CN661.
Turn ON the power
Yes
supply and press
the EMERGENCY
OPERATION
switch.
Replace the deicer P.C.
Does the unit operate
10 minutes or more?
❈ Defective contact of the connector is considered.
Unit operates COOL mode even if it is set to HEAT mode.
w First, measure the resistance of R.V. coil to confirm it is disconnected or is not short-circuit.
Check of R.V. coil
X
<MUH-07/09/12RV>
Turn ON the power supply and operate
the indoor unit in HEAT mode by pressing
the EMERGENCY OPERATION switch.
board.
No
Yes
Ok ❈
After 3 minutes, does the unit
operate in COOL mode?
Yes
Is there 220-240V AC
between CN7211 – 2 on the
deicer P.C. board?
Yes
Replace the R.V. coil.
No
Ok
No
Replace the
deicer P.C. board
23
After 3 minutes, does the unit
operate in HEAT mode?
Ok
No
Is there 220-240V AC
between CN7211 – 2 on the
deicer P.C. board?
Replace the
deicer P.C. board.
Yes
Yes
Yes
No
Replace the R.V. coil.
Turn ON the power supply and operate
the indoor unit in COOL mode by pressing
the EMERGENCY OPERATION switch.
Unit operates HEAT mode even if it is set to COOL mode.
w First, measure the resistance of R.V. coil to confirm it is disconnected or is not short-circuit.
Check of R.V. coil
X
<MUH-07/09/12RV>
24
TEST POINT DIAGRAM AND VOLTAGE
MSC-07RV MSC-09RV MSC-12RV -
E4
E4
E4
Indoor electronic control P.C. board
Power supply input
220-240V AC
}
CN201
Fuse(F11) 250V AC 3.15A
Fan motor power supply
}
Varistor (NR11)
CN111
Room temperature
thermistor (RT11)
CN112
Indoor coil
thermistor (RT12)
12V
DC
5V
DC
}
+
}
JPGND
J205
+
CN302
R132
CN121
Timer short mode point
(JPS, JPG)
Emergency operation switch
Vane motor power supply
(CN151)
SW2 (Refer to page 121 of
OB227 REVISED EDITION-B.)
1 sets the Auto restart function
ON/ OFF.
2 switches over MU and MUX
type/ MUH and MXZ type.
P.C.board
0~20V DC
Resistance(k")
25
MUH-07RV MUH-09RV MUH-12RV -
E4
E4
E4
Outdoor deicer P.C. board
CN711
Outdoor fan motor
220-240V AC
}
CN721
R.V. coil
220-240V AC
}
5V DC
J205
J101
Power supply input
220-240V AC
}
NR61
Varistor
F61
Fuse
2A/250V
R601
+
5~10VDC
}
--
Defrost interval
time short pin
(JPDS, JPSG)
(Refer to page 5.)
Jumper wire for
change in
}
CN661 1-2
Defrost thermistor RT61
+
--
}
defrost setting
(JRF,JRG)
(Refer to page
5.)
12V DC
J204
+
J101
--
26
8 PARTS LIST
MSC-07RV - (WH) MSC-07RV - (WH) MSC-07RV - (WH) MSC-07RV - (WH)
MSC-09RV - (WH) MSC-09RV - (WH) MSC-09RV - (WH) MSC-09RV - (WH)
MSC-12RV - (WH) MSC-12RV - (WH) MSC-12RV - (WH) MSC-12RV - (WH)
8-1. INDOOR UNIT STRUCTURAL PARTS
8-2. ACCESSORY AND
E4E3E2E1
E4E3E2E1
E4E3E2E1
REMOTE CONTROLLER
1 (W1)
11
2
3
10
9 (W2)
4
8 (W2)
5
6
(W1) These figures show about MSC-12RV.
(W2) Refer to OB227 REVISED EDITION-B 16. OPTIONAL PARTS. (See page 184 )
7 (W1)
12
MSC-07RV MSC-09RV MSC-12RV -
E2
E2
E2
13
MSC-07RV MSC-09RV MSC-12RV -
E4E3
E4E3
E4E3
8-1. INDOOR UNIT STRUCTURAL PARTS
Symbol
No.
Part No.
E02 409 234
1
E02 411 234
E02 409 976
2
E02 424 000
3
E02 409 067
4
E02 424 010
5
E02 408 142
6
E02 408 100
7
E02 410 100
8
9
E02 409 975
10
E02 408 970
11
Part Name
BOX(WH)
BOX(WH)
CORNER BOX (LEFT)
FRONT PANEL(WH)
SCREW CAP(WH)
GRILLE(WH)
CATCH
AIR FILTER
AIR FILTER
DEODORIZING FILTER
AIR CLEANING FILTER
CORNER BOX (RIGHT)
INSTALLATION PLATE
in Wiring
Diagram
MSC-07RV-
E1
(WH)
(WH)
1
1
1
2
1
3
2
1
1
1
1
8-2. ACCESSORY AND REMOTE CONTROLLER
E02 141 083
12
E02 527 083
E02 504 426
13
E02 583 426
REMOTE CONTROLLER HOLDER
REMOTE CONTROLLER HOLDER
REMOTE CONTROLLER
REMOTE CONTROLLER
11
Q'ty/unit
E3
E2
(WH)
1
1
1
1
1
1
2
2
1
1
3
3
2
2
1
1
1
1
1
1
1
1
E4
1
1
1
2
1
3
2
1
1
1
1
E1
1
1
1
2
1
3
2
1
1
1
1
E3
E2
(WH)(WH)(WH)(WH)
1
1
1
1
1
1
2
2
1
1
3
3
2
2
1
1
1
1
1
1
1
1
11
MSC-09RV-
1
1
1
1
1
1
1
1
E4
1
1
1
2
1
3
2
1
1
1
1
1
1
MSC-12RV-
E1
E2
(WH)(WH)(WH)
1
1
1
1
1
1
2
2
1
1
3
3
2
2
1
1
1
1
1
1
1
1
11
1
E3
(WH)
1
1
1
2
1
3
2
1
1
1
1
1
1
Remarks
E4
(WH)
1
1
1
Including No.4,5,6
2
2PCS/SET
1
3
3PCS/SET
2
1
MAC-1800DF
1
MAC-1300FT
1
1
1
1
27
Part No.
No.
Part Name
18
19
20
INDOOR HEAT EXCHANGER
INDOOR HEAT EXCHANGER
INDOOR HEAT EXCHANGER
UNION(GAS)
UNION(GAS)
UNION(LIQUID)
1
1
1
{9.52
{12.7
{6.35
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
E02 001 504
E02 408 702
E02 409 235
E02 409 040
E02 409 041
E02 127 382
E02 336 385
E02 408 034
E02 424 452
E02 504 452
E02 583 452
E02 691 452
E02 425 452
E02 505 452
E02 584 452
E02 692 452
E02 426 452
E02 506 452
E02 693 452
E02 408 303
E02 693 303
E02 408 308
E02 151 300
E02 665 300
E02 424 375
E02 691 375
E02 151 505
E02 665 505
E02 408 307
E02 408 302
E02 408 509
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
SLEEVE BEARING
DRAIN HOSE
NOZZLE (WH)
VANE UPPER (WH)
VANE LOWER (WH)
FUSE
VARISTOR
VANE MOTOR SUPPORT SET
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
ELECTRONIC CONTROL P.C.BOARD
VANE MOTOR
VANE MOTOR
ROOM TEMPERATURE THERMISTOR
INDOOR FAN MOTOR
INDOOR FAN MOTOR
TERMINAL BLOCK
TERMINAL BLOCK
FAN MOTOR RUBBER MOUNT
FAN MOTOR RUBBER MOUNT
INDOOR COIL THERMISTOR
LINE FLOW FAN
BEARING MOUNT
3.15A
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
AUTO RESTART
RC4V19RC4V19-
2PCS/SET
2PCS/SET
F11
NR11
MV
MV
RT11
MF
MF
TB
TB
RT12
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
Symbol
in Wiring
Diagram
Q'ty/unit
Remarks
MSC-07RV
MSC-09RV MSC-12RV
E1
E2
E3
E1
E2
E3
E1
E2
E3
(WH)
(WH)
(WH)
(WH)(WH)(WH)
(WH)(WH)(WH)(WH)
(WH)
(WH)
E4
E4
E4
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
E02 408 620
E02 410 620
E02 515 620
E02 151 666
E02 155 666
E02 151 667
MSC-07RV - (WH) MSC-07RV - (WH) MSC-07RV - (WH) MSC-07RV - (WH)
MSC-09RV - (WH) MSC-09RV - (WH) MSC-09RV - (WH) MSC-09RV - (WH)
MSC-12RV - (WH) MSC-12RV - (WH) MSC-12RV - (WH) MSC-12RV - (WH)
8-3. INDOOR UNIT ELECTRICAL PARTS
AND FUNCTIONAL PARTS
SLEEVE
BEARING
1
3
4
17
16
15
2
14
ROOM TEMPERATURE
THERMISTOR
11
12
10
13
8-4. INDOOR UNIT HEAT EXCHANGER
18 (W)
19
20
E4E3E2E1
E4E3E2E1
E4E3E2E1
5
FUSE
6
VARISTOR
8
7
9
(W)These figures show about MSC-12RV.
8-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS
8-4. INDOOR UNIT HEAT EXCHANGER
28
MU-07RV - MU-07RV - MU-07RV - MU-07RV MU-09RV - MU-09RV - MU-09RV - MU-09RV MU-12RV - MU-12RV - MU-12RV - MU-12RV -
8-5. OUTDOOR UNIT STRUCTURAL PARTS
12
1
2
3
11
E4E3E2E1
E4E3E2E1
E4E3E2E1
10
9
Part number that is circled is not shown in the illustration.
Symbol
No.
E02 336 630
1
E02 336 232
2
E02 336 521
3
E02 437 900
E02 589 900
E02 438 900
4
E02 408 900
E02 141 900
E02 594 900
E02 336 506
5
E02 075 506
E02 339 290
6
E02 340 290
E02 339 661
7
E02 340 661
E02 339 662
8
E02 336 245
9
E02 339 233
10
E02 440 233
E02 336 515
11
E02 336 297
12
E02 339 936
13
E02 412 936
Part No.
Part name
OUTDOOR HEAT EXCHANGER
CABINET
GRILLE(OUT)
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR RUBBER SET
COMPRESSOR RUBBER SET
BASE
BASE
STOP VALVE(GAS)
STOP VALVE(GAS)
STOP VALVE(LIQUID)
SERVICE PANEL
BACK PANEL
BACK PANEL
MOTOR SUPPORT
TOP PANEL
CAPILLARY TUBE
CAPILLARY TUBE
in Wiring
Diagram
MC
MC
MC
MC
MC
MC
4
6 75
8
Q'ty/unit
MU-12RV-MU-07RV- MU-09RV-
E1
E2
E3
E4
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
E2
E3
E4
1
1
1
1
1
1
1
1
1
1
1
1
E1
1
1
1
1
E2
E3
1
1
1
1
1
1
1
E1
1
1
1
1
1
3
3
3
3
3
3
3
3
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Remarks
E4
1
1
1
RH-135VGCT
RH-130VGCT
RH-145VGCT
RH-140VGCT
RH-231VHAT
RH-220VHAT
1
3RUBBERS/SET
3RUBBERS/SET
3
1
{9.52
{12.7
1
{6.35
1
1
1
1
1
{3.0x{1.4x600
{3.0x{1.6x600
1
29
1
2
3
4
5
6
7
8
9
E02 336 501
E02 665 501
E02 437 301
E02 676 301
E02 439 301
E02 677 301
E02 095 350
E02 661 351
E02 664 351
E02 085 353
E02 694 353
E02 079 353
E02 696 353
E02 437 374
E02 466 375
E02 438 374
E02 001 340
E02 466 340
E02 095 382
E02 128 383
PROPELLER FAN
PROPELLER FAN
OUTDOOR FAN MOTOR
OUTDOOR FAN MOTOR
OUTDOOR FAN MOTOR
OUTDOOR FAN MOTOR
OUTDOOR FAN CAPACITOR
OUTDOOR FAN CAPACITOR
OUTDOOR FAN CAPACITOR
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
COMPRESSOR CONTACTOR
COMPRESSOR CONTACTOR
FUSE
SURGE ABSORBER
RA6V23RA6V23RA6V33RA6V33-
1.5+ /440V AC
1.5+ /440V AC
2.0+ /440V AC
25+ /440V AC
25+ /440V AC
30+ /440V AC
30+ /440V AC
3P
3P
2P
250V/ 2A
MF
MF
MF
MF
C2
C2
C2
C1
C1
C1
C1
TB1
TB1
TB2
52C
52C
F
DSAR
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
No.
Part No.
Part name
Remarks
Symbol
in Wiring
Diagram
Q'ty/unit
MU-12RV-MU-07RV- MU-09RV-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
E1
E2
E3
E1
E2
E3
E1
E2
E3
E4
E4
E4
E02 408 426
10
REMOTE CONTROLLER
11
1
MU-07RV - MU-07RV - MU-07RV - MU-07RV MU-09RV - MU-09RV - MU-09RV - MU-09RV MU-12RV - MU-12RV - MU-12RV - MU-12RV 8-6. OUTDOOR UNIT
8-7. REMOTE CONTROLLER
ELECTRICAL PARTS AND
FUNCTIONAL PARTS
MU-07RV MU-09RV MU-12RV -
E3E2E1
E3E2E1
E3E2E1
2
6
5
E4E3E2E1
E4E3E2E1
E4E3E2E1
10
1
MU-07RV MU-09RV MU-12RV -
3
E4
E4
E4
4
8-6. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS
Part numbers that are circled are not shown in the illustration.
8-7. REMOTE CONTROLLER
30
No.
Part No.
Remarks
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
E02 440 630
E02 442 630
E02 336 232
E02 336 521
E02 164 900
E02 589 900
E02 128 900
E02 593 900
E02 141 900
E02 594 900
E02 336 506
E02 075 506
E02 339 290
E02 340 290
E02 339 661
E02 340 661
E02 139 662
E02 444 961
E02 336 245
E02 440 233
E02 336 515
E02 442 515
E02 336 297
E02 159 936
E02 156 936
E02 339 936
E02 441 936
E02 412 936
E02 134 937
E02 134 936
E02 442 936
E02 154 642
OUTDOOR HEAT EXCHANGER
OUTDOOR HEAT EXCHANGER
CABINET
GRILLE(OUT)
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR
COMPRESSOR RUBBER SET
COMPRESSOR RUBBER SET
BASE
BASE
STOP VALVE(GAS)
STOP VALVE(GAS)
STOP VALVE(LIQUID)
4-WAY VALVE
SERVICE PANEL
BACK PANEL
MOTOR SUPPORT
MOTOR SUPPORT
TOP PANEL
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
CAPILLARY TUBE
CHECK VALVE
RH-135VGHT
RH-130VGCT
RH-174VGHT
RH-165VGCT
RH-231VHAT
RH-220VHAT
3RUBBERS/SET
3RUBBERS/SET
{9.52
{12.7
{6.35
{3.0x{1.4x800
{3.0x{1.4x500
{3.0x{1.4x600
{3.0x{1.4x550
{3.0x{1.6x600
{3.0x{1.6x400
{3.0x{1.6x700
{3.0x{1.8x300
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
MC
MC
MC
MC
MC
MC
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
Symbol
in Wiring
Diagram
Part name
Remarks
Q'ty/unit
MUH-12RV-MUH-07RV- MUH-09RV-
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
3
1
1
1
1
1
1
1
1
2
1
1
1
E1
E2
E3
E1
E2
E3
E1
E2
E3
E4
E4
E4
MUH-07RV - MUH-07RV - MUH-07RV - MUH-07RV MUH-09RV - MUH-09RV - MUH-09RV - MUH-09RV MUH-12RV - MUH-12RV - MUH-12RV - MUH-12RV -
8-8. OUTDOOR UNIT STRUCTURAL PARTS
13
1
2
3
Part numbers that are circled are not shown in the illustration.
12
4 6 75
E4E3E2E1
E4E3E2E1
E4E3E2E1
11
10
8
9
31
1
2
3
4
5
6
7
8
9
10
11
E02 336 501
E02 665 501
E02 440 301
E02 671 301
E02 442 301
E02 672 301
E02 085 353
E02 694 353
E02 079 353
E02 696 353
E02 440 451
E02 679 451
E02 699 451
E02 128 383
E02 437 374
E02 466 375
E02 440 374
E02 697 374
E02 289 310
E02 697 310
E02 440 310
E02 699 310
E02 440 490
E02 095 382
E02 085 385
PROPELLER FAN
PROPELLER FAN
OUTDOOR FAN MOTOR
OUTDOOR FAN MOTOR
OUTDOOR FAN MOTOR
OUTDOOR FAN MOTOR
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
DEICER P.C. BOARD
DEICER P.C. BOARD
DEICER P.C. BOARD
SURGE ABSORBER
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
TERMINAL BLOCK
DEFROST THERMISTOR
DEFROST THERMISTOR
DEFROST THERMISTOR
DEFROST THERMISTOR
R. V. COIL
FUSE
VARISTOR
RA6V23RA6V23RA6V33RA6V3325+ /440V AC
25+ /440V AC
30+ /440V AC
30+ /440V AC
3P
3P
2P
2P
250V 2A
MF
MF
MF
MF
C1
C1
C1
C1
DSAR
TB1
TB1
TB2
TB2
RT61
RT61
RT61
RT61
21S4
F61
NR61
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
E02 430 426
E02 440 704
E02 444 704
E02 440 705
12
13
14
REMOTE CONTROLLER
DRAIN SOCKET
DRAIN SOCKET
DRAIN CAP
1
1
2
1
1
2
1
1
2
1
2
1
2
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
2
121
2
1
2
1
2
No.
Part No.
Remarks
Symbol
in Wiring
Diagram
Part name
2PCS/SET
Q'ty/unit
MUH-12RV-MUH-07RV- MUH-09RV-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
E1
E2
E3
E1
E2
E3
E1
E2
E3
E4
E4
E4
MUH-07RV - MUH-07RV - MUH-07RV - MUH-07RV MUH-09RV - MUH-09RV - MUH-09RV - MUH-09RV MUH-12RV - MUH-12RV - MUH-12RV - MUH-12RV -
8-9. OUTDOOR UNIT
ELECTRICAL PARTS AND
8-10. ACCESSORY AND
REMOTE CONTROLLER
FUNCTIONAL PARTS
MUH-07RV MUH-09RV MUH-12RV -
E3E2E1
E3E2E1
E3E2E1
8
76
2
E4E3E2E1
E4E3E2E1
E4E3E2E1
12
13
1
MUH-07RV MUH-09RV MUH-12RV -
E4
E4
E4
3
4
5
8-9. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS
Part numbers that are circled are not shown in the illustration.
8-10. ACCESSORY AND REMOTE CONTROLLER
14
32
MUX-10RV - MUX-10RV -
No.
Part No. Part Name Remarks
MUX-10RV-
Symbol
in Wiring
Diagram
Q'ty / unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
OUTDOOR FAN CAPACITOR
COMPRESSOR CAPACITOR
OUTDOOR HEAT EXCHANGER
TOP PANEL
CABINET
OUTER NOZZLE
SERVICE PANEL
SEPARATOR
COMPRESSOR
BASE ASSEMBLY
STOP VALVE (GAS)
STOP VALVE (LIQUID)
CAPILLARY TUBE
([3.0O[1.6O1200)
SOLENOID VALVE
CAPILLARY TUBE
([3.0O[1.4O1900)
SOLENOID VALVE
BYPASS VALVE SOLENOID COIL
SOLENOID COIL (B)
SOLENOID COIL (A)
MOTOR SUPPORT
PROPELLER FAN
TERMINAL BLOCK
TERMINAL BLOCK
COMPRESSOR CONTACTOR
OUTDOOR FAN MOTOR
OVERCURRENT RELAY
RELAY
TERMINAL BLOCK
FUSE
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
2
1
1
1
1
1
1
2
2
1
1
2
1
2
1
1
1
1
1
1
1
1
1
1
2
2
1
1
1
2
1
1
1
1
1
1
2
2
1
1
2
1
2
1.5+440V AC
17+440V AC
KH-134VLL
[9.52
[6.35
[3.0O[1.6O1000
L N
RA6V22-
G4F11123T
2,1,2,1
2A 250V
C2
C1
MC
21R
21R2
21R1
TB
TB2,TB3
52C1,52C2
MF
51C
X1,X2
TB
F12,F13
30
REMOTE CONTROLLER
2
E1
E2
M21 N71 350
T2W 304 353
T2W 459 630
M21 478 297
T2W E03 232
T2W 418 521
T2W E03 245
T2W E03 293
T92 514 200
T2W E03 290
T2W E42 661
T2W E42 662
M21 K08 936
M21 195 648
M21 463 936
M21 179 645
T2W E42 389
T2W E39 389
T2W E42 388
T2W 416 515
M21 601 501
T2W E60 375
M21 370 378
T2W 459 342
T2W E42 301
T2W E03 330
M21 B00 340
T2W E60 376
T2W A79 382
E02 408 426
[3.0O[1.4O400 (2PCS), [3.0O[1.4O200
When servicing, cut the tube to the proper length
as shown in the REFRIGERANT SYSTEM DIAGRAM.
E2E1
8-11. OUTDOOR UNIT STRUCTURAL PARTS,
ELECTRICAL PARTS AND FUNCTIONAL PARTS
20
24
23
22
21
8-12. REMOTE CONTROLLER
171819
1
2
3
4
5
6
16
15
14
13
12
11
10
9
8
7
8-11. OUTDOOR UNIT
STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS
Part numbers that are circled are not shown in the illustration.
30
8-12. REMOTE CONTROLLER
33
MUX-18RV - MUX-18RV 8-13. OUTDOOR UNIT
STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS
1
2
31
E2E1
25
30
29
28
27
26
24
23
22
21
6
20
19
18
17
16
15
14
13
14
13
12
11
8-14. REMOTE CONTROLLER
37
10
9
4
5
3
7
86
34
No.
Part No. Part Name Remarks
MUX-18RV-
Symbol
in Wiring
Diagram
Q'ty / unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
CABINET
OUTER NOZZLE
SERVICE PANEL
OVERCURRENT RELAY
COMPRESSOR
CAPILLARY TUBE
([3.0X[1.6X1400)
BASE
CAPILLARY TUBE
([3.0X[1.4X1100)
STOP VALVE(GAS)
STOP VALVE(LIQUID)
STOP VALVE(GAS)
STOP VALVE(LIQUID)
UNION(3/8)
UNION(1/4)
SOLENOID VALVE
SOLENOID VALVE
SOLENOID COIL
SOLENOID COIL(B)
SOLENOID COIL(C)
BACK PANEL
TERMINAL BLOCK
TERMINAL BLOCK
FAN MOTOR RELAY
COMPRESSOR CONTACTOR
OUTDOOR FAN CAPACITOR
COMPRESSOR CAPACITOR
MOTOR SUPPORT
OUTDOOR FAN MOTOR
PROPELLER FAN
OUTDOOR HEAT EXCHANGER
SIDE PANEL
CAPILLARY TUBE
([3.0X[1.6X800)
TERMINAL BLOCK
TERMINAL BLOCK
RELAY
FUSE
1
1
1
2
2
3
1
1
1
1
1
1
2
2
1
2
1
1
1
1
1
1
2
2
1
2
1
1
1
1
1
1
1
2
3
3
1
1
1
2
2
3
1
1
1
1
1
1
2
2
1
2
1
1
1
1
1
1
2
2
1
2
1
1
1
1
1
1
1
2
3
3
G4F11123T
KH-134VLL
[3.0O[1.4O1,100
[9.52
[6.35
[9.52
[6.35
A, B UNIT
POWER SUPPLY
LY-2F
3µF 440V AC
17µF 440V AC
RA6V50 -
[3.0O[1.6O300
C UNIT
2A 250V
51C1,51C2
MC1,MC2
21R
21R1
21R2
TB
TB
X11,X12
52C1,52C2
C3
C1,2
MF
TB
TB2,TB3
X1,X2,52CA
F12,F13,F14
37
REMOTE CONTROLLER
2
E1
E2
T2W 457 232
T2W 466 509
M21 K59 245
T2W E03 330
T92 514 200
M21 S07 936
T2W E06 290
M21 B93 936
T2W 689 667
T2W 689 665
M21 K59 661
M21 K59 662
M21 SJ4 667
M21 L01 666
M21 195 648
M21 179 645
T2W A23 490
T2W E41 489
T2W E41 488
T2W E41 291
T2W E60 375
T2W E60 376
T2W 813 342
T2W 459 342
M21 W16 350
T2W 304 353
M21 B19 515
T2W A73 301
M21 JN0 501
T2W A74 630
M21 B57 249
M21 G46 936
T2W E61 377
M21 370 378
M21 B00 340
T2W A79 382
E02 408 426
[3.0O[1.6O1000
[3.0O[1.6O1100 (2PCS)
When servicing, cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM.
MUX-18RV - MUX-18RV -
E2E1
8-13. OUTDOOR UNIT
STRUCTURAL PARTS, ELECTRICAL PARTS AND FUNCTIONAL PARTS
Part numbers that are circled are not shown in the illustration.
8-14. REMOTE CONTROLLER
35
MUX-24RV - MUX-24RV -
No.
Part No. Part Name Remarks
MUX-24RV-
Symbol
in Wiring
Diagram
Q'ty / unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
PROPELLER FAN
SOLENOID COIL (B)
SOLENOID COIL (D)
SOLENOID COIL (C)
SOLENOID COIL (A)
FAN MOTOR RELAY
TERMINAL BLOCK
TERMINAL BLOCK
OUTDOOR FAN CAPACITOR
FUSE
COMPRESSOR RELAY
COMPRESSOR CAPACITOR
COMPRESSOR CAPACITOR
SOLENOID COIL
SOLENOID COIL
OUTDOOR FAN MOTOR
RELAY
TERMINAL BLOCK
1
1
1
1
1
2
4
1
1
1
4
1
1
1
1
1
4
6
1
1
1
1
1
2
4
1
1
1
4
1
1
1
1
1
4
6
LY-2F
3+/440V AC
3.15A 250V AC
200/240V AC
30+/420V AC
25+/420V AC
RA6V25G4F11123T-MT
21R2
21R4
21R3
21R1
X11,X12
TB1,TB2
TB3,TB4
TB
C11
F
52C1,52C2
52C3,52C4
C1
C2
21RA
21RB
MF
X1,X2,X3,X4
TB5,6,7,8,9,10
19
REMOTE CONTROLLER
3
E1
E2
M21 17A 501
T2W E44 389
T2W E38 389
T2W E38 388
T2W E44 388
T2W 813 342
T2W E44 375
T2W E62 375
T2W E06 353
T2W E08 381
T2W 459 342
T2W A62 353
T2W 779 353
T2W E37 388
T2W E37 389
T2W E44 301
M21 B00 340
M21 020 378
E02 408 426
8-15. OUTDOOR UNIT
ELECTRICAL PARTS AND FUNCTIONAL PARTS
16115 14
E2E1
8-16. REMOTE CONTROLLER
12
13
11
19
10
17
9
8
2
43
5
6
7
8-15. OUTDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS
Part number that is circled is not shown in the illustration.
8-16. REMOTE CONTROLLER
36
MUX-24RV - MUX-24RV 8-17. OUTDOOR UNIT
STRUCTURAL PARTS
1
E2E1
20
22
21
19
18
17
16
15
14
13
2
3
5
4
6
8
7
10
9
11
12
Part number that is circled is not shown in the illustration.
E1
1
1
1
2
4
1
1
1
2
2
1
1
4
1
1
2
1
1
1
1
1
1
4
Q'ty / unit
MUX-24RV-
E2
1
1
1
2
4
1
1
1
2
2
1
1
4
1
1
2
1
1
1
1
1
1
4
No.
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Part No. Part Name Remarks
T2W E44 521
1
T2W E44 245
2
M21 51E 515
3
M21 AJ2 936
4
M21 179 645
5
T92 702 600
6
T2W E44 642
7
T2W E44 644
8
M21 00A 661
9
M21 00L 661
T2W E44 290
T92 531 600
M21 21J 662
T2W E44 643
T2W E44 641
T2W E44 648
T2W E44 248
T2W E44 523
T2W E44 297
T2W E44 630
T2W E44 232
T2W E44 249
M21 K47 936
OUTER NOZZLE
SERVICE PANEL
MOTOR SUPPORT
CAPILLARY TUBE
([3.0O[1.6O1100)
SOLENOID VALVE (A,B)
COMPRESSOR (C,D)
PIPE B S. V
S. V HEADER B
STOP VALVE (GAS)
STOP VALVE (GAS)
BASE
COMPRESSOR (A,B)
STOP VALVE (LIQUID)
S. V HEADER A
PIPE A S. V
SOLENOID VALVE
REAR PANEL
REAR GUARD
TOP PANEL
OUTDOOR HEAT EXCHANGER
FRONT PANEL
SIDE PANEL
CAPILLARY TUBE
([3.0O[1.6O800)
Symbol
in Wiring
Diagram
MC2
MC1
When servicing, cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM.
[3.0O[1.6O1000
RH-174VGH
[9.52
[12.7
RH-231VHA
[6.35
Including Capillary TUBE
([3.0O[1.8O260, [3.0O[1.6O400)
[3.0O[1.6O420 (2PCS)
[3.0O[1.6O650 (2PCS)
37
MXZ-18RV - MXZ-18RV -
No.
Part No. Part Name Remarks
MXZ-18RV-
Symbol
in Wiring
Diagram
Q'ty / unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
SIDE PANEL
HANDLE
FAN GUARD
FRONT PANEL
PROPELLER FAN
HANDLE
LABEL
SERVICE PANEL
COMPRESSOR
REAR PANEL
EXPANSION VALVE (COIL)
EXPANSION VALVE (COIL)
EXPANSION VALVE
BASE ASSEMBL Y
UNION (1/4F)
UNION (3/8F)
BALL VALVE (3/8)
HIGH PRESSURE SWITCH
REAR GUARD
4-WAY VALVE
ACCUMULATOR
MUFFLER
MOTOR SUPPORT
OUTDOOR HEAT EXCHANGER
OUTDOOR FAN MOTOR
TOP PANEL
CAPILLARY TUBE ([4.0✕[2.4✕2000)
CAPILLARY TUBE ([2.0✕[0.6✕1000)
1
2
1
1
1
1
1
1
1
1
1
1
2
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
2
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
RHV - 207FEM
RA6V50-
[2.0✕[0.6✕500
MC
LEV . A
LEV. B
HPS
MF
E1
E2
R01 A00 662
T2W A70 009
M21 LL4 521
M21 LL4 232
M21 LL4 501
T2W A69 009
T2W E65 212
M21 LL4 245
T92 669 452
M21 LL4 248
M21 LL4 488
M21 LL4 487
M21 LL4 646
M21 SJ4 290
M21 SJ4 666
M21 SJ4 667
T2W A64 668
T2W E41 646
T2W E65 523
T7W 250 403
M21 LL4 939
M21 LL4 938
T2W A70 515
M21 SJ4 630
T2W E41 301
M21 LL4 297
M21 986 936
M21 L11 936
[4.0O[2.4O300 (2PCS)
[4.0O[2.4O400 (3PCS)
When servicing, cut the tube to the proper length as shown in the REFRIGERANT SYSTEM DIAGRAM.
8-18. OUTDOOR UNIT
STRUCTURAL PARTS AND FUNCTIONAL PARTS
E2E1
1
2
3
Part numbers that are circled are not shown in the illustration.
26
22
21
25
24
23
20 19 18
17
11 12
13
16
15
14
5
6
4
7
8
9
10
38
MXZ-18RV - MXZ-18RV -
No.
Part No. Part Name Remarks
MXZ-18RV-
Symbol
in Wiring
Diagram
Q'ty / unit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
DIODE MODULE
DIODE MODULE
FIN TEMPERATURE THERMISTOR
POWER TRANSISTOR MODULE
REACTOR
TERMINAL BLOCK
RELAY P.C. BOARD
NOISE FILTER
DISCHARGE TEMPERATURE THERMISTOR
GAS PIPE TEMPERATURE THERMISTOR
DEFROST TEMPERATURE THERMISTOR
SUCTION TEMPERATURE THERMISTOR
ELECTRONIC CONTROL P.C. BOARD
R.V. COIL
POWER-FACTOR CAPACITOR
SMOOTHING CAPACITOR
CURRENT-DETECTING RESISTOR
TERMINAL BLOCK
NOISE FILTER
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
3N
SUCTION EVAPORATION
1800+ 400V AC
100+ 400V AC
LNPE
DS61
DS63
RT63
TR
L
TB
NF61
RT62
RT64,65
RT61
RT66, RT67
21S4
C61
C67
R65
TB
NF62
20
21
REMOTE CONTROLLER
DRAIN SOCKET ASSEMBLY 1
2
1
E1
E2
T2W E22 341
M21 A19 447
T2W E41 309
M21 V47 443
T2W A70 337
T2W E58 376
T2W E41 441
M21 LL4 424
T2W E55 309
T2W E41 306
T2W E41 308
T2W E41 307
T2W E58 451
T2W E41 398
T2W A70 357
T2W A70 356
M21 U48 362
T2W E58 375
T2W E22 425
E02 430 426
T2W E59 704
DRAIN SOCKET O1
DRAIN CAP O2
E2E1
8-19. OUTDOOR UNIT ELECTRICAL PARTS
1
2
17
16 15
14
13
8-20. ACCESSORY AND
REMOTE CONTROLLER
20
21
3
4
5
6
7
8
8-19. OUTDOOR UNIT ELECTRICAL PARTS
Part numbers that are circled are not shown in the illustration.
12
11
10
9
8-20. ACCESSORY AND REMOTE CONTROLLER
39
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
CC
Copyright 2000 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD
Distributed in Mar. 2002. No.OB252 REVISED EDITION C 13
Distributed in Jan. 2002. No.OB252 REVISED EDITION B 273
Distributed in Mar. 2001. No.OB252 REVISED EDITION A 249
Distributed in Mar. 2000. No.OB252 543
Made in Japan
New publication, effective Mar. 2002
Specifications subject to change without notice.
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