LG ARUV Series Service Manual page 191

4.3.3 Oil return/Defrost Operation(Series)
IM FAN
INV : Inverter compressor
CON : Constant speed compressor
EEV : Linear Expansion Valve
O/S : Oil Separator
Accum. : Accumulator
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Heat Exchanger
Fan
lndoor unit
IM FAN
O/S
INV
Liquid Injection
:High temperature / High pressure gas
:High temperature / High pressure liquid
:Low temperature / Low pressure gas
EEV
Filter
Filter
High/Low Pressure Common
H/G
O/S
CON
Accum.
Pressure sensor
Pressure switch
Check valve
EEV
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Piping Diagrams
Heat Exchanger
EEV
Filter
Fan
Filter
lndoor unit
Gas pipe
Liquid pipe
Thermistor
S
Solenoid valve
Service valve
Strainer
LGE Internal Use Only