Service manual
Wiring Diagrams SiENBE12-522A
314 Appendix
2.2.2 Heat Pump
2MXS52DVMB, 2AMX52DVMB, 2MXS52D2VMB, 2AMX52D2VMB
3MXS52DVMB, 3AMX52CVMB, 3MXS52D2VMB, 3AMX52C2VMB
ROOM B
TO INDOOR UNIT
ROOM A
3
2
1
3
2
1
X3M
X2M
X1M
L
N
3
2
1
3
2
1
GRN
30A
FU1
YLW
SA1
V3
Z3C
HE
1
7
HL
S11
HN
GRN
YLW
AC2
AC1
1
E
1
S10
S15
V2
7
1
5
1
S51
S52
12
S2
12
1
1
S102
S101
V5
5
5
MRM20
MRM10
FU2
3.15A
MRB
1
MRD
Y1S
MRC W
Y1R
S80
CT1
9
H2
H1
S91
1
t
°
Y1E
S20
R12T
1
M
A
Z2C
3
61
DB1
1
Y2E
S21
M
B
PCB
5
6
S32
CN11
5
1
ORG
L1
1
1
CN14
ORG
L2
L1R
Z1C
9
P2
N1
P1
W
V
U
10
S31
TB6
TB4
t
°
TB5
P2
N1
P1
S90
1
t
°
S6
t
°
S71
S72
1
FU201
3.15A
8
t
°
1
S92
S70
t
°
8
W
V
U
N
1
7
S33
S34
X11A
181 10
t
°
10
R3T
(OUTDOOR) (DISCHARGE)
(CONDENSER)
R2T
R1T
(ROOM-A) (ROOM-B)
(GAS PIPE)
R8T
R9T
(ROOM-A) (ROOM-B)
(LIQUID PIPE)
R4T
R5T
S93
t
°
1
V
S40
1
3
M1F
M1C
M
M
4
W
U
Q1L
161 81 9
N
MID1
SPM
MID2
Z1C~Z3C
X1M~X3M
Y1E~Y2E
V2~V5
FU1, FU2. FU201
HE, HL, HN
E,AC1, AC2
H1, H2, L1
L2,
MRM10, MRM20
MRB, MRD
MRC/W
R1T~R12T
S2~S102
H1P~H5P
: FERRITE CORE
: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
: VARISTOR
: FUSE
: CONNECTOR
: MAGNETIC RELAY
: THERMISTOR
: CONNECTOR
: PILOT LAMP
L
N
S1W
S2W
S3W
S4W
S5W
SA1
Y1R
Y1S
PCB
DB1
M1C
M1F
L1R
Q1L
CT1
: LIVE
: NEUTRAL
: FORCED OPERATION ON/OFF SW (SW1)
: FORCED OPERATION MODE SELECT SW (SW2)
: WIRING ERROR CHECK SW (SW3)
: PRIORITY ROOM SETTING SW (SW4)
: NIGHT QUIET MODE SETTING SW (SW5)
: SURGE ARRESTER
: REVERSING SOLENOID VALVE COIL
: DEFROST SOLENOID VALVE COIL
: PRINTED CIRCUIT BOARD
: DIODE BRIDGE
: COMPRESSOR MOTOR
: FAN MOTOR
: REACTOR
: OVERLOAD PROTECTOR
: CURRENT TRANSFORMER
MID1~MID2
SPM
: MOLDED INTER CONNECT DEVICE
: SYSTEM POWER MODULE
ASSIGNMENTS OF
TERMINALS OF THE COMP.
V
W
U
N
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
RED
BLK
WHT
GRN
BLU
BLK
BLU
BLK
WHT
YLW
ORG
BLU
BRN
RED
WHT
YLW
ORG
BLU
BRN
RED
BLU
GRY
BLK
BLK
GRY
BLK
GRY
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
WHT
ORG
BRN
BLU
RED
BRN
RED
YLW
BLU
GRY
BLK
BLK
~
~
+
-
+
-
+++
YLW
WHT
BLU
ORG
RED
BRN
RED
BLU
BRN
YLW
BRN
BLU
RED
FIELD WIRING
WHT
WHT
WHT
WHT
RED
BLK
S2W
S5W
S1W
S3W
S4W
H5PH4PH3P H2P H1P
YLW
BLU
RED
BLK
3D047721A
MID1~MID2
SPM
: MOLDED INTER CONNECT DEVICE
: SYSTEM POWER MODULE
Z1C
~
Z3C
X1M
~
X4M
Y1E
~
Y3E
V2
~
V5
FU1, FU2. FU201
HE, HL, HN
E,AC1, AC2
H1, H2, L1
L2,
MRM10, MRM20
MRB, MRD
MRC/W
R1T
~
R12T
S2
~
S102
H1P
~
H5P
: FERRITE CORE
: TERMINAL STRIP
: ELECTRONIC EXPANSION VALVE COIL
: VARISTOR
: FUSE
: CONNECTOR
: MAGNETIC RELAY
: THERMISTOR
: CONNECTOR
: PILOT LAMP
L
N
S1W
S2W
S3W
S4W
S5W
SA1
Y1R
Y1S
PCB
DB1
M1C
M1F
L1R
Q1L
CT1
: LIVE
: NEUTRAL
: FORCED OPERATION ON/OFF SW (SW1)
: FORCED OPERATION MODE SELECT SW (SW2)
: WIRING ERROR CHECK SW (SW3)
: PRIORITY ROOM SETTING SW (SW4)
: NIGHT QUIET MODE SETTING SW (SW5)
: SURGE ARRESTER
: REVERSING SOLENOID VALVE COIL
: DEFROST SOLENOID VALVE COIL
: PRINTED CIRCUIT BOARD
: DIODE BRIDGE
: COMPRESSOR MOTOR
: FAN MOTOR
: REACTOR
: OVERLOAD PROTECTOR
: CURRENT TRANSFORMER
ASSIGNMENTS OF
TERMINALS OF THE COMP.
V
W
U
N
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
BLU
RED
BLK
WHT
GRN
BLU
BLK
BLU
BLK
WHT
YLW
ORG
BLU
BRN
RED
WHT
YLW
ORG
BLU
BRN
RED
WHT
YLW
ORG
BLU
BRN
RED
BLU
GRY
BLK
BLK
GRY
BRN
BLK
GRY
YLW
H5P
S2W
H4P H3P
S5W
H2P
S1W
H1P
S3W
S4W
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
BLK
WHT
ORG
BRN
BLU
RED
BRN
RED
YLW
BLU
GRY
BLK
BLK
WHT
WHT
WHT
WHT
RED
BLK
YLW
BLU
RED
BLK
YLW
WHT
ORG
RED
BLU
BRN
RED
BLU
BRN
YLW
BRN
BLU
RED
+++
~
~
+
-
+
-
FIELD WIRING
MID1
PCB
SPM
MID2
Y1S Y1R
ROOM C
ROOM B
TO INDOOR UNIT
ROOM A
3
3
3
2
2
2
1
1
1
X3M
X4M
X2M
X1M
L
N
3
2
1
3
2
1
3
2
1
GRN
30A
FU1
YLW
SA1
V3
Z3C
HE
1
7
HL
S11
HN
GRN
YLW
AC2
AC1
1
E
1
S10
S15
V2
7
1
5
1
S51
S52
12
S2
12
1
1
S102
S101
V5
5
5
MRM20
MRM10
FU2
3.15A
MRB
1
MRD
MRC
W
S80
CT1
9
H2
H1
S91
1
t
°
Y1E
S20
R12T
1
M
A
Z2C
3
6
1
DB1
1
Y2E
S21
M
B
5
6
S32
1
CN11
5
1
Y3E
S22
M
C
ORG
L1
1
1
6
CN14
ORG
L2
L1R
Z1C
P2
9
N1
P1
W
V
U
10
S31
1
(OUTDOOR) (DISCHARGE)
(CONDENSER)
TB6
TB4
t
°
TB5
P2
N1
P1
S90
1
1
t
°
S6
6
t
°
S71
S72
1
(ROOM-A) (ROOM-C)
FU201
3.15A
1
8
8
(ROOM-B)
t
°
(GAS PIPE)
1
1
S92
S70
t
°
8
W
V
U
N
1
7
t
°
S33
S34
8
1
(LIQUID PIPE)
(ROOM-A) (ROOM-C)
(ROOM-B)
X11A
10
t
°
10
S93
t
°
R3T R2T
R1T R8T
R9T
R10T R4T
R5T
R6T
1
V
S40
t
°
1
3
M1F
M1C
M
M
4
W
U
Q1L
9
N
3D034314H