Mitsubishi Electric MSZ-G09SV User manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································7
4. NOISE CRITERIA CURVES·····························11
5. OUTLINES AND DIMENSIONS ·······················13
6. WIRING DIAGRAM ··········································17
7. REFRIGERANT SYSTEM DIAGRAM··············21
8. PERFORMANCE CURVES······························24
9. MICROPROCESSOR CONTROL ····················35
10. SERVICE FUNCTIONS·····································63
11. TROUBLESHOOTING······································66
12. DISASSEMBLY INSTRUCTIONS·····················97
13. PARTS LIST····················································106
14. OPTIONAL PARTS·········································115
Wireless type
Models
MSZ-G09SV - (WH)· MUZ-G09SV -
MSZ-G09SV - (WH)· MUZ-G09SV -
MSZ-G12SV - (WH)· MUZ-G12SV -
MSZ-G12SV - (WH)· MUZ-G12SV -
MSZ-G20SV - (WH)· MUZ-G20SV -E1E1
E2E2
E1E1
E2E2
E1E1
No. OB245
REVISED EDITION-B
SPLIT-TYPE, HEAT PUMPAIR CONDITIONERS
Revision:
●MSZ-G20SV - has been added.
●SPECIFICATION, PERFORMANCE CURVES
and PARTS LIST have been added.
●Please void OB245 REVISED EDITION-A.
E1
MSZ-G20SV - E1
OB245 --1qxp 02.10.22 4:08 PM Page 1

2
Remote
controller Remote controller
MSZ-G09SV -
MSZ-G12SV - E1
E1 MSZ-G09SV -
MSZ-G12SV - E2
E2
E1
MSZ-G20SV - E1
Grille
Deodorizing filter
(Gray sponge type)
Air cleaning filter
(White bellows type)
Air filter
Front panel
Operation section
Vertical vanes
Horizontal vane
Air inlet
Remote control
receiving section
Display section
(When the grille is opened)
Operation indicator lamp
Receiving section
Emergency operation switch
Operation indicator lamp
Receiving section
Emergency operation switch
Deodorizing filter(gray sponge type) and
air cleaning filter(white bellows type) of
MSZ-G20SV - are optional parts.
Operation Indicator
Remote controller
PART NAMES AND FUNCTIONS
2
INDOOR UNIT
MSZ-G20SV - E1
MSZ-G09SV -
MSZ-G12SV - E2
E2
MSZ-G09SV -
MSZ-G12SV - E1
E1 MSZ-G09SV -
MSZ-G12SV - E2
E2
MSZ-G09SV -
MSZ-G12SV - E1
E1
MSZ-G20SV - E1 MSZ-G20SV - E1
1TECHNICAL CHANGES
MSZ-G09SV - ➔MSZ-G09SV -
MSZ-G12SV - ➔MSZ-G12SV -
1. Remote controller has been changed.
MUZ-G09SV - ➔MUZ-G09SV -
MUZ-G12SV - ➔MUZ-G12SV -
1. Only model name has changed.
MSZ-G20SV -
New model
MUZ-G20SV -
New model
E1
E1
E2E1
E2E1
E2E1
E2E1
MSZ-G09SV -
MSZ-G12SV - E2
E2
MSZ-G09SV -
MSZ-G12SV - E1
E1
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3
OUTDOOR UNIT
MUZ-G20SV - E1
Air inlet
Air outlet
Drain outlet
Piping
Drain hose
(back and side)
(back and side)
Model indication
Air inlet
Air outlet
MUZ-G09SV -
MUZ-G09SV - E2
E1
MUZ-G12SV -
MUZ-G12SV - E2
E1
ACCESSORIES
1
2
3
4
5
6
7
Installation plate
Installation plate fixing screw 4 o25 mm
Remote controller holder
Fixing screw for 33.5 o1.6 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
1
7
1
2
2
1
1
MSZ-G20SV - E1
8
9
0
1
Drain socket
3-way drain socket
Relay pipe
Different-diameter pipe
2
1
1
1
MUZ-G20SV - E1
MSZ-G09SV - E1
MSZ-G09SV - E2
MSZ-G12SV - E1
MSZ-G12SV - E2
1
5
1
2
2
1
1
OUTDOOR UNIT
INDOOR UNIT
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4
REMOTE CONTROLLER
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 FEELCOOL DRY HEAT
600 1 100
AM PM
SWING SWING button
MSZ-G09SV -
MSZ-G12SV - E1
E1
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5
ON/OFF
TOO
COOL
AMPM
AMPM
CLOCK
TOO
WARM
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
SWING
I FEEL COOL
HEAT
DRY
PM
CLOCK
AMPM
RESET CLOCK
:
:
Open the front lid.
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF) button
TEMPERATURE buttons
OPERATION SELECT button
FAN SPEED CONTROL button
OFF-TIMER button
HR. button
MIN. button
(TIME SET button)
ON-TIMER button
RESET button
ECONO COOL button
VANE CONTROL button
CLOCK SET button
VERTICAL VANE
SWING button
MSZ-G09SV -
MSZ-G12SV - E2
E2
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6
MSZ-G20SV - E1
ON/OFF
TOO
COOL
PM
AM
TOO
WARM
ON/OFF
FAN
TOO
WARM TOO COOL
VANE
MODE
ECONO COOL
STOP
START
HR.
MIN.
WIDE VANE
LONG
I FEEL COOL
HEAT
DRY
PM
CLOCK
AM
RESET CLOCK
Open the front lid.
Signal transmitting section
Operation display section
OPERATE /STOP
(ON /OFF) button
TEMPERATURE buttons
OPERATION SELECT button
FAN SPEED CONTROL button
OFF-TIMER button
HR. button
MIN. button
(TIME SET button)
ON-TIMER button
RESET button
ECONO COOL button
VANE button
(Horizontal vane button)
CLOCK SET button
LONG button
WIDE VANE button
(Vertical vane button)
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7
SPECIFICATION
3
Single phase
230V,50Hz
10
—
90
5.50
0.17
RC4V19-BA
WHT-BLK 292
BLK-RED 325
850O278O191
9
5
3
10
10
10
MUZ-G09SV - E1
MUZ-G09SV - E2
1,500
0.25
KHV-104FGK
900
U-V 2.14 U-W 2.14
V-W 2.14
RA6V18-AA
WHT-BLK 279
BLK-RED 198
710(+69)o540o255
28
45
600
1
0.75
270 (MS56)
33.2
13.4
7.9
Cooling
2.6 (1.3-3.1)
474/366
W
/252
W
1.2
4.54
940 (440 - 1,120)
2.77
36/29
W
/22
W
950/760
W
/570
W
4.12
Heating
3.6 (1.4-5.1)
504/402
W
/312
W
—
5.50
1,140 (430 - 1,300)
3.16
35/29
W
/22
W
1,000/830
W
/670
W
5.08
MSZ-G09SV - E1
MSZ-G09SV - E2 MSZ-G12SV - E1
MSZ-G12SV - E2
Single phase
230V,50Hz
10
—
90
7.40
0.19
RC4V19-BA
WHT-BLK 292
BLK-RED 325
850O278O191
10
5
3
10
10
10
MUZ-G12SV - E1
MUZ-G12SV - E2
1,560
0.34
SHV-130FEA
1,100
U-V 0.45 U-W 0.45
V-W 0.45
RA6V28-DA
WHT-BLK 201
BLK-RED 350
710(+69)o540o255
34
48
720
1
1.10
350 (MS56)
33.2
13.4
7.9
Cooling
3.5 (0.9-4.0)
588/444
W
/312
W
1.6
6.20
1,290 (290 - 1,390)
2.71
39/32
W
/25
W
1,020/810
W
/620
W
5.67
Heating
4.8 (0.9-6.7)
642/516
W
/366
W
—
7.40
1,540 (290 - 2,090)
3.12
39/34
W
/25
W
1,100/920
W
/700
W
6.87
Indoor model
Function
Power supply
Capacity
Air flow
(High/Med.W/LowW)
Dehumidification
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level(High/Med.W/LowW)
Fan speed(High/Med.W/LowW)
Fan speed regulator
Thermistor RT11(at25:)
Thermistor RT12(at25:)
Thermistor RT13(at25:)
Outdoor model
Air flow
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:)
Thermistor RT62
(at100:)
Thermistor RT64(at70:)
kW
K/h
r/h
A
A
W
A(kW)
%
A
A
"
mm
kg
dB
rpm
k"
k"
k"
K/h
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
k"
k"
k"
Electrical data
Fan motor
Special remarks
Compressor
Electrical data
Fan motor
Special remarks
Capacity
Coefficient of performance(C.O.P)
Capacity
NOTE : Test conditions are based on ISO 5151
Cooling : Indoor DB27:WB19:
Outdoor DB35:WB 24:
Heating : Indoor DB 20:WB15:
Outdoor DB 7:WB 6:
Refrigerant piping length (one way): 5m
wReference value
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8
Indoor model
Function
Power supply
Capacity
Air flow
(High/Med.W/LowW)
Dehumidification
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Fan motor current
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Air direction
Sound level(High/Med.W/LowW)
Fan speed(High/Med.W/LowW)
Fan speed regulator
Thermistor RT11(at25:)
Thermistor RT12(at25:)
Thermistor RT13(at25:)
Outdoor model
Air flow(High/LowW)
Compressor motor current
Fan motor current
Model
Output
Winding
resistance(at20:)
Model
Winding
resistance(at20:)
Dimensions WOHOD
Weight
Sound level(High)
Fan speed (High/LowW)
Fan speed regulator
Refrigerant filling
capacity(R22)
Refrigerating oil (Model)
Thermistor RT61
(at100:)
Thermistor RT62(at25:)
Thermistor RT67(at70:)
kW
K/h
r/h
A
A
W
A(kW)
%
A
A
"
mm
kg
dB
rpm
k"
k"
k"
K/h
A
A
W
"
"
mm
kg
dB
rpm
kg
cc
k"
k"
k"
MSZ-G20SV - E1
Single phase
230V, 50Hz
20
—
90
11.20
0.30
RC4V40-AA
WHT-BLK 138.2
BLK-RED 159.0
1,100O325O227
16
5
47/43W/39W
3
10
10
10
MUZ-G20SV - E1
1,860/1,560W
0.38
SHV-130FEA
1,400
U-V 0.45
V-W 0.45 W-U 0.45
RA6V35-AA
WHT-BLK 236.2 BLK-YLW 48.1
BLK-RED 224.1
800(+69)o600o300
45
68
630/560W
2
1.55
350 (MS-56)
13.4
10.0
7.9
Cooling
5.3
960/822W/684W
1.7
11.20
2,320
2.28
1,280/1,130W/970W
10.79
Heating
6.1
960/834W/732W
—
9.32
1,930
3.16
1,280/1,150W/1,020W
8.91
Electrical data
Fan motor
Special remarks
Compressor
Electrical data
Fan motor
Special remarks
Capacity
Coefficient of performance(C.O.P)
Capacity
NOTE : Test conditions are based on ISO 5151
Cooling : Indoor DB27:WB19:
Outdoor DB35:WB 24:
Heating : Indoor DB 20:WB15:
Outdoor DB 7:WB 6:
Refrigerant piping length (one way): 5m
wReference value
OB245 --1qxp 02.10.22 4:08 PM Page 8

9
1.5+ 440V
250V 3.15A
93:5A 250V
MP20GA 12V 300"
ERZV10D471
S201DH1Y
5P
JM1aN-ZTMP-DC12V
136:i3: 2A
100+ 420V
1500+ 420V
8A 8mH
70m"5W
10"15W
EM43261
QM15TG-9B
INDOOR UNIT
OUTDOOR UNIT
Item Model
Model
Item
Indoor fan capacitor
Fuse
Thermal fuse
Vane motor
Varistor
Solid state relay
Terminal block
Contactor
Indoor fan motor thermal fuse
Power-facrtor capacitor
Smoothing capacitor
Outdoor fan capacitor
Current transformer
Diode stack
Fuse
Fuse
Expansion valve coil
Reactor
Current-detecting resistor
Current-limiting resistor
Solid state relay
Terminal block
Outdoor fan relay
Current-limiting relay
R.V. coil
Noise filter
Transistor module
MSZ-G09SV - E1 MSZ-G12SV - E1
MUZ-G12SV - E1
MSZ-G09SV - E2 MSZ-G12SV - E2
165+ 420V
2500+ 420V
15A 4.3mH
100m"5W
10"20W
EM43262
QM20TG-9B
MUZ-G09SV - E1
MUZ-G12SV - E2
MUZ-G09SV - E2
1.8+ 440V
RR-18
S25VB80
250V 2A
250V 1A
LAM-MD12ME 12VDC
TLP3506
4P
G5S-1
G4A-1A
LB8 220-240V AC
(C61)
(C63)
(C65)
(CT61)
(DS61, DS62)
(F801)
(F901)
(LEV)
(L61)
(R61, R62)
(R64)
(SSR61)
(TB2)
(X61)
(X64)
(21S4)
(C11)
(F11)
(F12)
(MV1, MV2)
(NR11)
(SR141)
(TB)
(52C)
Specifications and rating conditions of main electric parts
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10
INDOOR UNIT
OUTDOOR UNIT
Item Model
Model
Item
Indoor fan capacitor
Fuse
Vane motor
Varistor
Solid state relay
Terminal block
Power-facrtor capacitor
Smoothing capacitor
Outdoor fan capacitor
Current transformer
Current transformer
Diode stack
Fuse
Fuse
Fuse
Fuse
Intelligent power module
Reactor
Current-limiting resistor
Current-detecting resistor
Expansion valve coil
Solenoid coil relay
Terminal block
Terminal block
Outdoor fan relay
Outdoor fan relay
Relay
R.V. coil
Noise filter
MSZ-G20SV - E1
MUZ-G20SV - E1
(C61)
(C62)
(C65)
(CT61)
(CT62)
(DS61, DS62)
(20A)
(1A)
(F911)
(F912)
(IPM)
(L)
(R64A,R64B)
(R61, R62)
(LEV)
(SSR61)
(TB1)
(TB2)
(X61)
(X62)
(X64)
(21S4)
(C11)
(F11)
(MV1, MV2)
(NR11)
(SR141)
(TB)
2.5+ 440V
250V 3.15A
MP20 12V 300"
ERZV 10D 471
S201 DH1Y 250V 1.5A
4P
165+ 400V
2500+ 400V
2.5+ 400V
RR-18
CT25E-31V1A
S25VB80 25A 800W
250V 20A
250V 1A
250V 1A
250V 3.15A
PM30CTJ060-3
CH-85
BWR10N10ΩJ
0.07Ω5Wx2
LAM-MD12ME 12VDC
TLP3506
3P
4P
G4U-1-EDC12V
G4U-1-EDC12V
G4A-1A-PS
LB8 220-240VAC
DE00N285B02
Specifications and rating conditions of main electric parts
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11
4NOISE CRITERIA CURVES
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
36
SPL(dB(A)) LINE
High
FAN SPEED
HEATING
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
45
SPL(dB(A)) LINE
High
SPEED
HEATING
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
MSZ-G09SV -
MSZ-G09SV - E2
E1
MSZ-G12SV -
MSZ-G12SV - E2
E1
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
39
SPL(dB(A)) LINE
High
FAN SPEED
HEATING
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
MUZ-G09SV -
MUZ-G09SV - E2
E1
MUZ-G12SV -
MUZ-G12SV - E2
E1
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
48
SPL(dB(A)) LINE
High
FAN SPEED
HEATING
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
OB245 --1qxp 02.10.22 4:08 PM Page 11

12
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
47
SPL(dB(A)) LINE
High
FAN SPEED
HEATING
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15.5:90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
48
SPL(dB(A)) LINE
High
FAM SPEED
HEATING
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
49
MSZ-G20SV - E1 MUZ-G20SV - E1
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13
OUTLINES AND DIMENSIONS
5
INDOOR UNIT
OUTDOOR UNIT
MSZ-G09SV - E1
116.581.5
78
67
818
850
16562956
7 or more
100
41
2.5
42
271 4.5
231.5
82 169
326 326
5
189
56
160
17.5
Air in
Air out Insulation [28
Drain hose [16
(Connected part O.D.)
Installation plate
Wall hole [65
Indoor unit
Installation plate
Power supply cord
Lead to right 1.0m
Lead to left 0.3m
Wireless remote controller
Liquid line [6.35-0.5m
Gas line [9.52-0.43m
Insulation [37 O.D.
[21 I.D.
{
278
Unit: mm
116.581.5
78
67
818
850
16562956
7 or more
100
41
2.5
42
271 4.5
231.5
82 169
326 326
5
189
Air in
Air out Insulation [28
Drain hose [16
(Connected part O.D.)
Installation plate
Wall hole [65
Indoor unit
Installation plate
Power supply cord
Lead to right 1.0m
Lead to left 0.3m
Liquid line [6.35-0.5m
Gas line [9.52-0.43m
Insulation [37 O.D.
[21 I.D.
{
278
162
19
58
Wireless remote controller
MSZ-G09SV - E2
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14
MSZ-G12SV - E1
116.581.5
818
278
850
16562956
or more
100
41
2.5
42
271 4.5
231.5
82 169
326 326
5
189
56
160
17.5
Air in
Air out Insulation [28
Drain hose [16
(Connected part O.D.)
Installation plate
Wall hole [65
Indoor unit
Installation plate
Power supply cord
Lead to right 1.0m
Lead to left 0.3m
Wireless remote controller
Liquid line [6.35-0.5m
Gas line [9.52-0.43m
Insulation [37 O.D.
[21 I.D.
78
67
7
{
INDOOR UNIT
MSZ-G12SV - E2
116.581.5
818
278
850
16562956
or more
100
41
2.5
42
271 4.5
231.5
82 169
326 326
5
189
Air in
Air out Insulation [28
Drain hose [16
(Connected part O.D.)
Installation plate
Wall hole [65
Indoor unit
Installation plate
Power supply cord
Lead to right 1.0m
Lead to left 0.3m
Liquid line [6.35-0.5m
Gas line [9.52-0.43m
Insulation [37 O.D.
[21 I.D.
78
67
7
{
162
19
58
Wireless remote controller
INDOOR UNIT
OB245 --1qxp 02.10.22 4:08 PM Page 14

15
Liquid refrigerant pipe joint
Refrigerant pipe (flared) [6.35
Service panel
Gas refrigerant pipe joint
Refrigerant pipe (flared)
 [9.52 (MUZ-G09SV
)
Service port
Bolt pitch for installation
Handle
Air out
Air in Drainage holes [28
4 holes 10o21
18
500
710
265
105 69 138
20
40
However, either the
left/ right sides or
back side should
be unobstructed.
Air in
265
REQUIRED SPACE
Even if the right/ left sides or
back side are vacant, the top
has to be at least 100mm
unobstructed.
Drainage holes [28
127
32.4
92
367
Drainage holes [28
33
32.5 255
285 320
155
90
43-
35-
540
270
10
350mm or more
100mm or more
100mm or more
100mm or more
Basically unobstructed
[12.7 (MUZ-G12SV
)
WA
WA
WB
WA In case of poorly-ventilated place, the front or the back
has to be at least 200 mm unobstructed.
WB The wall may get dirty in case the air is discharged
toward it.
MUZ-G09SV - MUZ-G12SV -
MUZ-G09SV - MUZ-G12SV - E2E2
E1E1 Unit: mm
OUTDOOR UNIT
OB245 --1qxp 02.10.22 4:08 PM Page 15

16
162
19
58
47
7.5315
255.547
2.5
98 173
98 173414.5 414.5
5225
253
791
56
1068
1100
325
Air out
Air in
Insulation [28
Drain hose [16
(Connected part O.D)
{
Liquid line [9.52-0.5m
Gas line [19-0.43m
Insulation [50 O.D
[32 I.D
Installation plate
Wall hole [75
Wireless remote controller
Installation plate Indoor unit
MSZ-G20SV - E1
INDOOR UNIT Unit: mm
Gas refrigerant pipe joint
Refrigerant pipe(flared)
[12.7 ([12.7 [15.88)
When connecting the indoor
unit,use the
different-diameter pipe
that is an accessory of
outdoor unit.
REQUIRED SPACE
Open as a rule 100mm
or more if the front and
both sides are open.
100mm or more
350mm or more
100mm or more
Air in
Air in
4holes-10x21 Air out
Bolt pitch for installation
Service panel
Service port
Liquid refrigerant pipe joint
Refrigerant pipe(flared)
[9.52
Open as a rule 200mm
or more if the back,
both sides and top
are open. 45
152
155
400
348
45
365
330
300
40
600
10 300
150
288 69
35-
43-
183
90
155
23
33
18
Drainage holes [33
Drainage hole [33
500
800
Handle
MUZ-G20SV - E1
OUTDOOR UNIT
OB245 --1qxp 02.10.22 4:08 PM Page 16

17
WIRING DIAGRAM
6
INDOOR UNIT
MODELS WIRING DIAGRAM
POWER
SUPPLY
CORD
~/N 230V
50Hz
GRN/YLW
BLK
GRY
YLW
BRN
WHT
RED
MF
1
2
3
4
5
6
3
SR141 3
2
1
CN
121
C11
HIC1
TRANS
MV2
RT13
4
3
2
1
CN112
151
CN
MV1
10
RT12
RT11
111
CN
CN211
NR11
ELECTRONIC CONTROL P.C. BOARD
F11
230V~
BRN
TB
L
3
2
N
BLU
BRN
WHT
BLU
F12RED
BLU
BLU 1
2
BLU 1
2
3
CN201 3
452C
PE
CIRCUIT BREAKER
12V
TO OUTDOOR
UNIT
CONNECTING
REMOTE
CONTROLLER
POWER MONITOR,
RECEIVER
P.C. BOARD
5
LD101T
SYMBOL
C11
F11
F12
HIC1
MF
SYMBOL
MV1
MV2
NR11
RT11
RT12
SYMBOL
RT13
SR141
TB
52C
NAME
INDOOR FAN CAPACITOR
FUSE (3.15A)
THERMAL FUSE (93:)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER FUSE)
NAME
VANE MOTOR (HORIZONTAL)
VANE MOTOR (VERTICAL)
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR (MAIN)
NAME
INDOOR COIL THERMISTOR (SUB)
SOLID STATE RELAY
TERMINAL BLOCK
CONTACTOR
GRN/YLW
GRN/YLW
LD101T
5
POWER MONITOR,
RECEIVER
P.C.BOARD
REMOTE
CONTROLLER
TO OUTDOOR
UNIT
CONNECTING
12V
CIRCUIT BREAKER
PE
52C
4
3
CN201
3
2
1
BLU
2
1
BLU
BLU
RED
F12
BLU
WHT
BRN
BLU
N
2
3
LTB BRN
230V~
F11
ELECTRONIC CONTROL P.C. BOARD
NR11
CN211
CN
111 RT11
RT12
10
MV1
CN
151
CN112
1
2
3
4RT13
MV2
TRANS
HIC1
C11
121
CN
1
2
3
SR141
3
6
5
4
3
2
1
MF
RED
WHT
BRN
YLW
GRY
BLK
GRN/YLW
POWER
SUPPLY
CORD
~/N 230V
50Hz
SYMBOL
C11
F11
F12
HIC1
MF
SYMBOL
MV1
MV2
NR11
RT11
RT12
SYMBOL
RT13
SR141
TB
52C
NAME
INDOOR FAN CAPACITOR
FUSE (3.15A)
THERMAL FUSE (93:)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER FUSE)
NAME
VANE MOTOR (HORIZONTAL)
VANE MOTOR (VERTICAL)
VARISTOR
ROOM TEMPERATURE THERMISTOR
INDOOR COIL THERMISTOR (MAIN)
NAME
INDOOR COIL THERMISTOR (SUB)
SOLID STATE RELAY
TERMINAL BLOCK
CONTACTOR
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
MSZ-G09SV -
MSZ-G12SV - E1
E1
MODELS WIRING DIAGRAM
MSZ-G09SV -
MSZ-G12SV - E2
E2
SG79B727H01
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
SG79J166H01
OB245 --1qxp 02.10.22 4:08 PM Page 17

18
OUTDOOR UNIT
BLK
R64
WHT
RED
WHT
BLU
654321
X61
CN725
RT64
GRN
WHT
TAB65
CY61
3
C65
ORN
N
W
V
U
R61
DS62
RED
C63
DS61 BLK
F801
(-)(+)
TAB63
12
SSR61
TAB66
3
LD64
ELECTRONIC
CONTROL
P.C. BOARD
1
2
CN723
34
3
2
1
LEV
V
W
YLW
RED
L61 BLK
C61
CN642
RT62
RT61
T801
EUN
BLK
WHT
RED
RED
NR61
(~)
MC
GRN/YLW
12V 3
2
N
TB2
230V ~
FROM INDOOR UNIT
CONNECTING
SYMBOL
C61
C63
C65
CT61
CY61~64
DSA61
DS61,62
F801
F901
LEV
SYMBOL
L61
L62
MC
MF61
NR61
RT61
RT62
RT64
R61
R64
SYMBOL
SSR61
TB2
TR
T801
X61
X64
21S4
NAME
POWER-FACTOR CAPACITOR
SMOOTHING CAPACITOR
OUTDOOR FAN CAPACITOR
CURRENT TRANSFORMER
CAPACITOR
SURGE ABSORBER
DIODE STACK
FUSE (2A)
FUSE (1A)
EXPANSION VALVE COIL
NAME
REACTOR
CMC COIL
COMPRESSOR
OUTDOOR FAN MOTOR(INNER PROTECTOR)
VARISTOR
DEFROST THERMISTOR
DISCHARGE TEMPERATURE THERMISTOR
FIN TEMPERATURE THERMISTOR
CURRENT-DETECTING RESISTOR
CURRENT-LIMITING RESISTOR
NAME
SOLID STATE RELAY
TERMINAL BLOCK
POWER TRANSISTOR MODULE
TRANSFORMER
OUTDOOR FAN RELAY
CURRENT-LIMITING RELAY
R.V. COIL
BLU
RED
WHT
+
U
NOISE FILTER
P.C. BOARD
L62
CY62
LDE2
DSA61
CY63
CY64
CN722
3
2
1
CN724
6
2
1
P
BWN BVN BUN
EWPBWP BVP BUP
EUPEVP
RED
(~)
YLW
TAB64
-
+
-
YLW
TAB
67
4
CN721
LD62
F901
RELAY
P.C. BOARD
BLU
4
X64
TAB68
CT61
TAB69
LDE1
GRN
21S4 MF61
RED
BLU
CN601 CN641
WHT
ORN
(-)(+)
(~)
(~)
REDBLK
BLK
TR
CN771
21S4
heating ON
cooling OFF
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2.Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
MODELS WIRING DIAGRAM
MUZ-G09SV -
MUZ-G09SV - E2
E1
SG79B710H03
OB245 --1qxp 02.10.22 4:08 PM Page 18

19
OUTDOOR UNIT
BLK
R64
WHT
RED
WHT
BLU
654321
X61
CN725
RT64
GRN
WHT
TAB65
CY61
3
C65
ORN
N
W
V
U
R61
DS62
RED
C63
DS61 BLK
F801
(-)(+)
TAB63
12
SSR61
TAB66
3
LD64
ELECTRONIC
CONTROL
P.C. BOARD
1
2
CN723
34
3
2
1
LEV
V
W
YLW
RED
L61 BLK
C61
CN642
RT62
RT61
T801
EUN
BLK
WHT
RED
RED
NR61
(~)
MC
GRN/YLW
12V 3
2
N
TB2
230V ~
FROM INDOOR UNIT
CONNECTING
SYMBOL
C61
C63
C65
CT61
CY61~64
DSA61
DS61,62
F801
F901
LEV
SYMBOL
L61
L62, 63
MC
MF61
NR61
RT61
RT62
RT64
R61, 62
R64
SYMBOL
SSR61
TB2
TR
T801
X61
X64
21S4
NAME
POWER-FACTOR CAPACITOR
SMOOTHING CAPACITOR
OUTDOOR FAN CAPACITOR
CURRENT TRANSFORMER
CAPACITOR
SURGE ABSORBER
DIODE STACK
FUSE (2A)
FUSE (1A)
EXPANSION VALVE COIL
NAME
REACTOR
CMC COIL
COMPRESSOR
OUTDOOR FAN MOTOR(INNER PROTECTOR)
VARISTOR
DEFROST THERMISTOR
DISCHARGE TEMPERATURE THERMISTOR
FIN TEMPERATURE THERMISTOR
CURRENT-DETECTING RESISTOR
CURRENT-LIMITING RESISTOR
NAME
SOLID STATE RELAY
TERMINAL BLOCK
POWER TRANSISTOR MODULE
TRANSFORMER
OUTDOOR FAN RELAY
CURRENT-LIMITING RELAY
R.V. COIL
BLU
RED
WHT
+
U
NOISE FILTER
P.C. BOARD
L62
CY62
LDE2
DSA61
CY63
CY64
CN722
3
2
1
CN724
6
2
1
P
BWN BVN BUN
EWPBWP BVP BUP
EUPEVP
RED
(~)
YLW
TAB64
-
+
-
YLW
TAB
67
4
CN721
LD62
F901
RELAY
P.C BOARD
BLU
4
X64
TAB68
CT61 TAB69
LDE1
GRN
21S4 MF61
L63
ORN
(-)(+)
(~)
(~)BLK
WHT
BLK
BLU
RED
R62
CN641
CN601
RED
TR
CN771
21S4
heating ON
cooling OFF
NOTE:1. About the indoor side electric wiring refer to the indoor unit electric wiring diagram for servicing.
2.Use copper conductors only. (For field wiring)
3. Symbols below indicate.
/: Terminal block, : Connector
MODELS WIRING DIAGRAM
MUZ-G12SV -
MUZ-G12SV - E2
E1
SG79B873H03
OB245 --1qxp 02.10.22 4:08 PM Page 19