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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Wiring Diagrams
Sub Board
CONNECTOR No. SPEC DESCRIPTION
CN01 AC POWER IN AC POWER
CN02 AC TRANS IN AC POWER TO TRANS
CN03 AC TRANS OUT AC POWER FROM TRANS
CN04 4WAY 4WAY REVERSING VALVE
CN05 LIQ(A) CONSTANT(A) COMP LIQUID INJECTION VALVE
CN06 LIQ(B) CONSTANT(B) COMP LIQUID INJECTION VALVE
CN07 HEATER(A) CONSTANT(A) COMP CRANK HEATER
CN08 HEATER(B) CONSTANT(B) COMP CRANK HEATER
CN10 HOT-GAS HOT GAS BYPASS VALVE
CN11 OILPASS(A) NOT USE
CN12 OILPASS(B) NOT USE
CN14 MAGNET(A) CONSTANT(A) COMP MAGNETIC SWITCH
CN15 MAGNET(B) CONSTANT(B) COMP MAGNETIC SWITCH
CN16 H/P HIGH PRESSURE
CN17 PHASE 3 PHASE DETECT
CN18 FAN(R) FAN MOTOR(RIGHT)
CN19 FAN(L) FAN MOTOR(LEFT)
CN20 EEV-OUT LINEAR EXPANSION VALVE(MAIN)
CN21 EEV-SC LINEAR EXPANSION VALVE(SUBCOOLING CIRCUIT)
CN22 TO JIG TRANSMISSION WITH JIG
CN23 CEN_CONTROL/WRITE NOT USE
CN24 TO MAIN OUTDOOR TRANSMISSION WITH MAIN OUTDOOR UNIT
OUT-AIR OUTDOOR AIR THERMISTOR
CN26 S_PIPE(A) CONSTANT(A) COMP SUCTION PIPE THERMISTOR
D_PIPE(B) CONSTANT(B) COMP DISCHARGE PIPE THERMISTOR
D_PIPE(A) CONSTANT(A) COMP DISCHARGE PIPE THERMISTOR
CN27 HEX_PIPE(A) CONDENSOR PIPE THERMISTOR(A)
HEX_PIPE(B) CONDENSOR PIPE THERMISTOR(B)
SC-OUT SUBCOOLING CIRCUIT OUTLET PIPE THERMISTOR
CN28 SC-IN SUBCOOLING CIRCUIT INLET PIPE THERMISTOR
SC-L SUBCOOLING CIRCUIT LIQUID PIPE THERMISTOR
CN29 P-SEN(H) HIGH PRESSURE SENSOR
CN30 P-SEN(L) LOW PRESSURE SENSOR
JIG1 JIG JIG POWER
JIG2 JIG JIG POWER
CN31 EEV-OUT-1 LINEAR EXPANSION VALVE(MAIN)
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