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Copyright ©2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. Piping Diagrams
Indoor Unit
Outdoor Unit
Heat
Exchanger
(Evaporator)
Heat
Exchanger
(Condenser)
Compressor
Accumulator
Gas Side
3-Way Valve
2-Way Valve
Liquid Side
Cooling
Heating
Reversing Valve
EEV
Th1
Th2
Th7
Th3
Th8
Th9
Th6
Th4
Th5
LOC.
Description
PCB Connector
Th1
Thermistor for suction air temperature
CN-TH1(Indoor)
Th2
Thermistor for evaporator inlet temperature
Th3
Thermistor for evaporator outlet temperature
CN-TH2(Indoor)
Th4
Thermistor for evaporator middle temperature
CN-TH3(Indoor)
Th5
Thermistor for discharge pipe temperature
CN-TH3(OUTDOOR)
Th6
Thermistor for suction pipe temperature
Th7
Thermistor for condensing temperature
CN-TH2(OUTDOOR)
Th8
Thermistor for outdoor air temperature
Th9
Thermistor for condensing middle temperature
CN-TH4(OUTDOOR)
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EEV : Electronic Expansion Valve