Mitsubishi Electric MSZ-G09SV-E1 User manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Wireless type
Models
No. OB245
REVISED EDITION-A
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES·······························7
5. OUTLINES AND DIMENSIONS ·························8
6. WIRING DIAGRAM···········································11
7. REFRIGERANT SYSTEM DIAGRAM··············14
8. PERFORMANCE CURVES······························16
9. MICROPROCESSOR CONTROL ····················26
10. SERVICE FUNCTIONS·····································41
11. TROUBLESHOOTING······································44
12. DISASSEMBLY INSTRUCTIONS·····················62
13. PARTS LIST······················································66
14. OPTIONAL PARTS···········································70
MSZ-G09SV - (WH) ● MUZ-G09SV -
MSZ-G09SV - (WH) ● MUZ-G09SV -
MSZ-G12SV - (WH) ● MUZ-G12SV -
MSZ-G12SV - (WH) ● MUZ-G12SV - E2E2
E1E1
E2E2
E1E1
Revision:
●MSZ-G09SV - and MSZ-G12SV - have been added.
●MICROPROCESSOR CONTROL, SERVICE FUNCTIONS,
and PARTS LIST have been partially modified.
●Please void OB245.
E2E2
MSZ-G09SV -
MSZ-G12SV - E2
E2
OB245A-1.qxp 01.4.4 2:56 PM Page 1

1TECHNICAL CHANGES
2PART NAMES AND FUNCTIONS
2
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.
E2E1
E2E1
E2E1
E2E1
INDOOR UNIT
MSZ-G09SV-
MSZ-G09SV- E2
E1 MSZ-G12SV-
MSZ-G12SV- E2
E1
Emergency operation switch
Display section
Operation Indicator lamp
Receiving section
Grille
Air cleaning
filter(white bellows
type)
Deodorizing filter
(gray sponge type)
Air filter
Vertical vane
Air inlet
to Breaker
Remote control
receiving section
Horizontal vane
Remote
controller Remote controller
MSZ-G09SV -
MSZ-G12SV -
Operation section (When the grille is open)
Power supply cord
Front panel
E1
E1 MSZ-G09SV -
MSZ-G12SV - E2
E2
OB245A-1.qxp 01.4.4 2:56 PM Page 2

3
OUTDOOR UNIT Air inlet
Air outlet
Drain outlet
Piping
Drain hose
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
MUZ-G09SV-
MUZ-G09SV- E2
E1 MUZ-G12SV-
MUZ-G12SV- E2
E1
Installation plate
Installation plate fixing screw 4 x 25 mm
Remote controller mounting hardware
Fixing screw for 33.5 x 16 mm (Black)
Battery (AAA) for remote controller
Wireless remote controller
Felt tape (Used for left or left-rear piping)
1
5
1
2
2
1
1
1
2
3
4
5
6
7
ACCESSORIES
Check the following parts before installation.
OB245A-1.qxp 01.4.4 2:56 PM Page 3

4
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
OB245A-1.qxp 01.4.4 2:56 PM Page 4

SPECIFICATION
3
5
Indoor model
Function
Power supply
Capacity
Air flow(High)
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)
Fan speed (High)
Fan speed regulator
RT11(at25:)
Thermistor RT12(at25:)
RT13(at25:)
Outdoor model
Outdoor 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)
RT61(at0:)
Thermistor RT62(at100:)
RT64(at70:)

kW
K/h
R/h
A
A
W
A(kW)
%
A
A
"
mm
kg
dB(A)
rpm
k"
k"
k"

K/h
A
A
W
"


"
mm
kg
dB(A)
rpm
kg
cc
k"
k"
k"
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
1500
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
1.2
4.54
940 (440 - 1120)
36
950
4.12
2.77
Heating
3.6 (1.4-5.1)
504
—
5.50
1140 (430 - 1300)
35
1000
5.08
3.16
Electrical data
Fan motor
Special remarks
Compressor
Electrical
data
Fan motor
Special remarks
Coefficient of performance(C.O.P)
Capacity
Capacity
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
39
3
10
10
10
MUZ-G12SV - E1
MUZ-G12SV - E2
1560
0.34
SHV-130FEA
1100
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
1.6
6.20
1290 (290 - 1390)
1020
5.67
2.71
Heating
4.8 (0.9-6.7)
642
—
7.40
1540 (290 - 2090)
1100
6.87
3.12
NOTE : Test conditions are based on ISO 5151 (Refrigerant piping length (one way): 5m)
Cooling : Indoor DB27:WB19:
Outdoor DB35:WB(24:)
Heating : Indoor DB 20:WB15:
Outdoor DB 7:WB 6:
OB245A-1.qxp 01.4.4 2:56 PM Page 5

6
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
Current transformer
Power-facrtor capacitor
Smoothing capacitor
Outdoor fan capacitor
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
RR-18
1.8+ 440V
S25VB80
250V 2A
250V 1A
LAM-MD12ME 12VDC
TLP3506
4P
G5S-1
G4A-1A
LB8 220-240V AC
(CT61)
(C61)
(C63)
(C65)
(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
OB245A-1.qxp 01.4.4 2:56 PM Page 6

NOISE CRITERIA CURVES
4
7
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 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 27: WB 19:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
36
SPL(dB(A)) LINE
High
SPEED
HEATING
Heating : DB 20: WB 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 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 35: WB (24:)
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
45
SPL(dB(A)) LINE
High
SPEED
HEATING
Heating : DB 7: WB 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 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 27: WB 19:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
39
SPL(dB(A)) LINE
High
SPEED
HEATING
Heating : DB 20: WB 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 0.002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 35: WB (24:)

APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
FUNCTION
48
SPL(dB(A)) LINE
High
SPEED
HEATING
Heating : DB 7: WB 6:
OB245A-1.qxp 01.4.4 2:56 PM Page 7

5OUTLINES AND DIMENSIONS
8
MSZ-G09SV- E1
INDOOR UNIT
Unit: mm
MSZ-G12SV- E1
INDOOR UNIT
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
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
{
OB245A-1.qxp 01.4.4 2:56 PM Page 8

9
MSZ-G09SV- E2
INDOOR UNIT
Unit: mm
MSZ-G12SV- E2
INDOOR UNIT
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
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
OB245A-1.qxp 01.4.4 2:56 PM Page 9

10
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
OUTDOOR UNIT
Unit: mm
OB245A-1.qxp 01.4.4 2:56 PM Page 10

11
6WIRING DIAGRAM
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
OB245A-1.qxp 01.4.4 2:56 PM Page 11

12
OUTDOOR UNIT
BLK
R64
WHT
RED
WHT
BLU
6 5 4 3 2 1
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
CT61
C61
C63
C65
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
CURRENT TRANSFORMER
POWER-FACTOR CAPACITOR
SMOOTHING CAPACITOR
OUTDOOR FAN CAPACITOR
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
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
OB245A-1.qxp 01.4.4 2:56 PM Page 12

13
OUTDOOR UNIT
BLK
R64
WHT
RED
WHT
BLU
6 5 4 3 2 1
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
CT61
C61
C63
C65
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
CURRENT TRANSFORMER
POWER-FACTOR CAPACITOR
SMOOTHING CAPACITOR
OUTDOOR FAN CAPACITOR
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
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
OB245A-1.qxp 01.4.4 2:56 PM Page 13

14
MUZ-G09SV -
MUZ-G09SV - E2
E1
OUTDOOR UNIT
REFRIGERANT SYSTEM DIAGRAM
7
MSZ-G09SV -
MSZ-G09SV - E2
E1
INDOOR UNIT
Unit : mm
Indoor
heat
exchanger
Outdoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Indoor coil
temperature
thermistor
RT13(sub)
Defrost
temperatuer
thermistor
RT61
Discharge
temperatuer
thermistor
RT62
Flared connection
Stop valve
(with strainar)
Stop valve
(with service port)
Capillary tube
[3.0✕[1.8✕400
Refrigerant flow in cooling
Compressor
Accumulator
Muffler
Muffler
4-way valve
Refrigerant flow in heating
Refrigerant pipe [9.52
(with heat insulator)
Refrigerant pipe
[6.35
(with heat insulator)
Indoor coil
temperature
thermistor
RT12(main)
Expansion
valve R.V. coil
heating ON
cooling OFF
MUZ-G12SV -
MUZ-G12SV - E2
E1
OUTDOOR UNIT
MSZ-G12SV -
MSZ-G12SV - E2
E1
INDOOR UNIT
Unit : mm
Indoor
heat
exchanger
Outdoor
heat
exchanger
Flared connection
Room temperature
thermistor
RT11
Indoor coil
temperatuer
thermistor
RT13(sub)
Defrost
temperature
thermistor
RT61
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
(with strainar)
Stop valve
(with service port)
Capillary tube
[3.0✕[2.0✕200
Capillary
tube
[3.0✕[2.0✕300
Refrigerant flow in cooling
Compressor
Accumulator
Muffler
Muffler
4-way valve
Refrigerant flow in heating
Refrigerant pipe [12.7
(with heat insulator)
Refrigerant pipe
[6.35
(with heat insulator)
Capillary
tube
[3.0✕[2.0✕300
Indoor coil
temperatuer
thermistor
RT12(main)
Expansion
valve
R.V. coil
heating ON
cooling OFF
OB245A-1.qxp 01.4.4 2:56 PM Page 14

15
MAX. REFRIGERANT PIPING LENGTH
Refrigerant Piping
Max. length
A
wHeight difference should be within
8m(MSZ-G09SV)/ 10m(MSZ-G12SV)
regardless of which unit,
indoor or outdoor position is high.
wMax. Height
difference 8m
(MSZ-G09SV)
Indoor
unit
Outdoor unit
wMax. Height
difference 10m
(MSZ-G12SV)
MAX. HEIGHT DIFFERENCE
ADDITIONAL REFRIGERANT CHARGE (R22:g)
Refrigerant piping
Max. length : m
A
12
15
Indoor unit
Gas 0.43
Liquid 0.5
Gas
9.52
12.7
Liquid
6.35
Outdoor unit
Piping size O.D : mm Length of connecting pipe : m
Model
MSZ-G09SV - E1
MUZ-G09SV - E1
MSZ-G09SV - E2
MUZ-G09SV - E2
MSZ-G12SV - E1
MUZ-G12SV - E1
MSZ-G12SV - E2
MUZ-G12SV - E2
Outdoor unit
precharged
750
1100
14m
270
7m
60
60
6m
30
30
5m
0
0
11m
180
180
Model Refrigerant piping length (one way)
Calculation : Xg=30g/mo(Refrigerant piping length(m) - 5)
8m
90
90
9m
120
120
10m
150
150
12m
210
210
13m
240
15m
300
MSZ-G09SV - E1
MUZ-G09SV - E1
MSZ-G09SV - E2
MUZ-G09SV - E2
MSZ-G12SV - E1
MUZ-G12SV - E1
MSZ-G12SV - E2
MUZ-G12SV - E2
OB245A-1.qxp 01.4.4 2:56 PM Page 15

16
PERFORMANCE CURVES8
The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.
Since operating conditions vary according to the areas where these units are installed. The following information has been
provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
(1) GUARANTEED VOLTAGE
207 ~ 253V, 50Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature ::WB
(2) Indoor outlet air wet-bulb temperature ::WB
(3) Outdoor intake air dry-bulb temperature ::DB
(4) Total input :W
(5) Indoor intake air dry-bulb temperature ::DB
(6) Outdoor intake air wet-bulb temperature ::WB
(7) Total input :W
Indoor air wet/dry-bulb temperature difference on the left side of the chart on page 15 and 16 shows the difference
between the indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your refer-
ence at service.
How to measure the indoor air wet-bulb/ dry-bulb temperature difference
1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet-and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.
2. Attach at least 2 sets of wet-and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT OUTDOOR UNIT
}
Cooling
}
Heating
MSZ-G09SV-
MUZ-G09SV- E1
E1 MSZ-G09SV-
MUZ-G09SV- E2
E2 MSZ-G12SV-
MUZ-G12SV- E1
E1 MSZ-G12SV-
MUZ-G12SV- E2
E2
OB245A-1.qxp 01.4.4 2:56 PM Page 16

17
11.5
10.5
9.6
8.6
7.7
6.8
MSZ-G09SV- E1 MSZ-G09SV- E2
11.6
10.6
9.6
8.7
7.8
6.9
MSZ-G12SV- E1 MSZ-G12SV- E2
0 50 100 150(Hz)
0.0
0.5
1.0
1.5 Correction of Cooling capacity
Capacity correction factors
The operational frequency of compressor
Cooling capacity
✴These values are under rated (frequency).
MUZ-G09SV -
MUZ-G09SV - E2
E1
Correction of total input
Input correction factors
The operational frequency of compressor
0 50 100 150(Hz)
0.0
0.5
1.0
1.5
MUZ-G09SV -
MUZ-G09SV - E2
E1
0 50 100 150(Hz)
0.0
0.5
1.0
1.5 Correction of Cooling capacity
Capacity correction factors
The operational frequency of compressor
MUZ-G12SV -
MUZ-G12SV - E2
E1
Correction of total input
Input correction factors
The operational frequency of compressor
0 50 100 150
0.0
0.5
1.0
1.5
MUZ-G12SV -
MUZ-G12SV - E2
E1
OB245A-1.qxp 01.4.4 2:56 PM Page 17

18
28.0
25.9
23.7
21.6
19.4
17.2
15.1
12.9
MSZ-G09SV- E1 MSZ-G09SV- E2
29.3
27.1
24.8
22.6
20.3
18.1
15.8
13.5
MSZ-G12SV- E1 MSZ-G12SV- E2
Heating capacity
NOTE:The following curves are for the heating operation without any frost.
✴These values are under rated (frequency).
0 50 100 150(Hz)
0.0
0.5
1.0
1.5Correction of Heating capacity
Capacity correction factors
The operational frequency of compressor
Correction of total input
Input correction factors
The operational frequency of compressor
0 50 100 150(Hz)
0.0
0.5
1.0
1.5
MUZ-G09SV -
MUZ-G09SV - E2
E1 MUZ-G09SV -
MUZ-G09SV - E2
E1
0 50 100 150(Hz)
0.0
0.5
1.0
1.5Correction of Heating capacity
Capacity correction factors
The operational frequency of compressor
Correction of total input
Input correction factors
The operational frequency of compressor
0 50 100 150(Hz)
0.0
0.5
1.0
1.5
MUZ-G12SV -
MUZ-G12SV - E2
E1 MUZ-G12SV -
MUZ-G12SV - E2
E1
OB245A-1.qxp 01.4.4 2:56 PM Page 18

19
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
1Both indoor and outdoor unit are under the same temperature/humidity condition.
NOTE : The unit of pressure has been changed to MPa on the international system of units(SI unit system).
The conversion factor is: 1(MPa [Gauge]) =10.2(kgf/ff[Gauge])
Dry-bulb temperature Relative humidity(%)
20 50
25 60
30 70
(MPa [Gauge])
(kgf/F [Gauge])

18 32

15 20
50 25 60 30 70(%) 35(:)
0.2
0.3
0.4
0.5
0.6
0.7 79Hz
2
3
4
5
6
7
80.8
MUZ-G09SV -
MUZ-G09SV - E2
E1
Outdoor low pressure
Ambient temperature(:)
Ambient humidity(%)
15 20
50 25 60 30
70(%) 35(:)
3
4
5
6
7
79Hz
32
18
MUZ-G09SV -
MUZ-G09SV - E2
E1
Outdoor unit current (A)
Ambient temperature(:)
Ambient humidity(%)
2Air flow should be set at High.
3Operational frequency : 79Hz
How to operate with fixed operational frequency of the compressor.
1. Press the EMERGENCY OPERATION switch on the front of the indoor unit , and select either EMERGENCY COOL
mode or EMERGENCY HEAT mode before starting to operate the air conditioner.
2. The compressor starts up.
The operational frequency of the compressor is G09: 79Hz, G12: 85Hz in EMERGENCY COOL mode and 58Hz in
EMERGENCY HEAT mode.
3. The fan speed of the indoor unit is High.
4. This operation continues for 30minutes.
5. In order to release this operation, press the EMERGENCY OPERATION switch twice or once, or press any button on the
remote controller.
COOL operation
(MPa [Gauge])
(kgf/F [Gauge])

18 32

15 20
50 25 60 30 70(%) 35(:)
0.2
0.3
0.4
0.5
0.6
0.7 85Hz
2
3
4
5
6
7
80.8
MUZ-G12SV -
MUZ-G12SV - E2
E1
Outdoor low pressure
Ambient temperature(:)
Ambient humidity(%)
15 20
50 25 60 30
70(%) 35(:)
3
4
5
6
7
85Hz
32
18
MUZ-G12SV -
MUZ-G12SV - E2
E1
Outdoor unit current (A)
Ambient temperature(:)
Ambient humidity(%)
Operational frequency : 85Hz
OB245A-1.qxp 01.4.4 2:56 PM Page 19

20
6.0
5.5
5.0
4.5
4.0
3.5
3.0 2 5 10 15 20 25
58Hz
MUZ-G12SV -
MUZ-G12SV - E2
E1
Outdoor unit current (A)
Ambient temperature(:)
HEAT operation
Condition Indoor : Dry bulb temperature 20.0:
Wet bulb temperature 14.5:Outdoor : Dry bulb temperature 2 7 15 20.0: Wet bulb temperature 1 6 12 14.5:
6.0
5.5
5.0
4.5
4.0
3.5
3.0 2 5 10 15 20 25
58Hz
MUZ-G09SV -
MUZ-G09SV - E2
E1
Outdoor unit current (A)
Ambient temperature(:)
OB245A-1.qxp 01.4.4 2:56 PM Page 20