LG ARUN Series Service Manual page 25

Oil Return/ Defrost Operation
Ind oor HEX
Fan
Fan
DC
Outdoor
Temperature
Sensor
Sub-cooli ng Circuit
Outlet Temperature
Sensor
Sub-cooli ng Circuit
Inlet Temperature
Sensor
Press ure Sensor
Remarks
Press ure Switch
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Only for training and service purposes
EEV
Ind oor Unit
Fan
DC
Outdoor Unit
HEX Temperature
Sensor
High Press ure
Sensor
Outdoor
EEV
Oil
Separator
Comp
Disc harge
Temperature
Sensor
Inverter
Comp
Liquid Pipe Temp. Sensor
Plate Type HEX
Sub-Coo ling EEV
Temperature Sensor
SVC Valve
Ind oor HEX
Fan
High Temp. High Press ure Gas
High Temp. High Press ure Liqu id
Low Temp. Low Press ure Gas
4-Way Valve
Low
Press ure
Suction Sensor
Temperature
Sensor
Acc umulator
Liquid Injection
Check Valve
EEV
- 25 -
Piping Diagrams
EEV
Ind oor Unit
Gas Pipe
Hot Gas
Valve
Liquid Pipe
Oil
Separator
Comp
Disc harge
Temperature
Sensor
Con stant
Speed
Comp
Outdoo r Uni t
Soleno id Valve
Strainer
LGE Internal Use Only