121
3. Wiring Diagram
1U71S2SM1FA
B:BLACK
Y/G:YELLOW/GREEN
W:WHITE
OR:ORANGE
BL:BLUE
R:RED
AC-N OUT
CN9
CN10
AC-L OUT
M
CN22
CN3
PE
POWER SUPPLY
W
Y/G
CN36
COMB
COMA
N
R
CN1
CN2
AC-N
AC-L
FUSE1
T25A 250VAC
CN24
CN23
MODULE COM
MODULE POWER
TO
 INDOOR UNIT
CN3
CN10
B
BL
BL
OR
CN5
CN1
CN4
CN8
CN9
CN2
CN11
CN6
CN7
REACTOR
B
R(U)
S(V)
C(W)
B
W
R
DC FAN 
MAIN CONTROL PCB
DRIVE MOUDLE
E
 
E
Y/G
W
B
Y/G
1(N)
2(L)
3(C)
W
BL
U
V
W
P N
AC-L
LI
AC-N L0
CN25
N
P
CN28
N
L
CN11
4-WAY
VALVE 
G
G
B
CAP
 
CN15
VALVE A
LECTRIC
XPANSION
M
VALVE
MOTOR
NOTES:
THE DOTTED PARTS 
ARE OPTIONAL
CAP
CAP
COMPRESSOR
  DON'T TOUCH CAPACITOR, EVEN AF TER PLUG-OFF ( DANGER OF ELECTRI C SHOCK) 
  The capacitor retains high vol
tage even after the plug-off. 
For your safety, be sure to wait at least 5 minutes. after 
plug off and use a tester to confirm the voltage between 
connector P and N is less than DC 10V before start servicing.
CN7
CN6
AC-N OUT
AC-L
 
OUT
W
B
 
CAUTION
WARNING
FUSE2
T1
A
250VAC
QX
CN47
SUCTION
TEMPERATURE
SENSOR
 DEFROST
TEMPERATURE
SENSOR
COMPRESSOR
TEMPERATURE
SENSOR
AMBIENT
TEMPERATURE
SENSOR
TC
CS HW
CN17
G:GREY