LG multi V PLUS Service Manual page 225

4.1.3 Oil Return/Defrost Operation
IM FAN
INV : Inverter
Comp. : Compressor
LEV : Linear Expansion Valve
O/S : Oil Separator
Accum. : Accumulator
Heat Exchanger
Fan
lndoor unit
IM FAN
O/S
Inv
Comp
Liquid Injection
:High temperature / High pressure gas
:High temperature / High pressure liquid
:Low temperature / Low pressure gas
LEV
Filter
Filter
H/G
Accum.
Drier
Piping Diagrams
Heat Exchanger
LEV
Filter
Fan
Filter
lndoor unit
Gas pipe
Liquid pipe
Pressure sensor
Pressure switch
Check valve
LEV
Thermistor
S
Solenoid valve
Service valve
Strainer
Service Manual 225