Piping Diagrams; Indoor Unit - LG LSN090HYV Svc Manual

2. Piping Diagrams

Indoor Unit

Th1
Heat
Exchanger
(Evaporator)
LOC.
Th1 Thermistor for sunction air temperature
Th3 Water level sensor (Option)
Th4 Thermistor for evaporator middle temperature
Th5 Thermistor for discharge pipe temperature
Th6 Thermistor for condensing temperature
Th7 Thermistor for outdoor air temperature
※ EEV : Electronic Expansion Valve
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Only for training and service purposes
Liquid Side
2-Way Valve
Th4
Th3
Gas Side
3-Way Valve
Description
Outdoor Unit
Accumulator
Compressor
CN-TH1(Indoor)
CN-TH2(Indoor)
CN-TH3(Indoor)
CN-TH2(OUTDOOR)
CN-TH1(OUTDOOR)
CN-TH1(OUTDOOR)
- 3 -
EEV
Heat
Exchanger
(Condenser)
Th6
Reversing Valve
Th5
Cooling
Heating
PCB Connector
LGE Internal Use Only
Th7