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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Wiring Diagrams
S3 Chassis
BLDC
MOTOR
DR
Y
CONT
A
C
T
Accessory
CONNECTOR NUMBER
LOCATION POINT
FUNCTION
CN-POWER
AC POWER SUPPLY
AC POWER LINE INPUT FOR INDOOR CONTROLLER
CN-MOTOR
FAN MOTOR OUTPUT
MOTOR OUTPUT OF BLDC
CN-COM
COMMUNICATION
COMMUNICATION BETWEEN INDOOR AND OUTDOOR
CN-EEV
EEV OUTPUT
EEV CONTROL OUTPUT
CN-L/R
STEP MOTOR
STEP MOTOR OUTPUT FOR LEFT/RIGHT
CN-U/D
STEP MOTOR
STEP MOTOR OUTPUT
CN-TH1
ROOM/PIPE SENSOR
ROOM & PIPE THERMISTOR
CN-TH2
DISCHARGE PIPE SENSOR
DISCHARGE PIPE THERMISTOR
CN-SUC
STEP MOTOR(FRONT)
FRONT PANEL STEP MOTOR
CN-HVB
AIR PURIFIER
AIR PURIFIER OUTPUT
CN-VFD
DISPLAY
DISPLAY OF INDOOR STATUS
CN-CON
SAFETY CONNECTION
SAFETY OF INDOOR STATUS
CN_AC/DC
AC/DC CONNECTION
CONNECTION BETWEEN AC PCB AND DC PCB