LG FM38AH UH3 - Piping Diagrams; Refrigerant Circuit and Flow; Component Identification Table

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Only for training and service purposes
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3. Piping Diagrams
LOC. Description PCB Connector
Th1 Thermistor for outdoor air temperature CN_TH2
Th2 Thermistor for condensing temperature CN_TH2
Th3 Thermistor for discharge pipe temperature CN_TH3
Th4 Thermistor for suction pipe temperature CN_TH3
S/V(1) Solenoid Valve for Hot Gas CN_H/GAS
S/V(2) Solenoid Valve for Oil Separator CN_OIL/S
L/P Low Pressure Switch CN_PRESS
Cooling
Refrigerant flow)
Outdoor Unit
Heating
Field piping
Gas(Ø9.52)
Field piping
Liquid(Ø6.35)
EEV-E
Accumulator
Th4
S/V(2)
L/P
Compressor
EEV-D
EEV-C
EEV-B
EEV-A
Th3
Oil Separator
R/Valve
Heat
Exchanger
S/V(1)
S/V(1)
Th1
Th2
S/V(1)