Heat Pump – Oil Return And Defrost Operation - LG Multi V5 Service Manual

ARUM072BTE5 / DTE5, ARUM096BTE5 / DTE5, ARUM121BTE5 / DTE5
Heat Pump – Oil Return and Defrost Operation
Indoor HEX
M
*6 ton unit
only has 1 fan
Fan
M M Motor
Outdoor
Temperature
Sensor
s
Active Path
Outdoor Unit HEX
Valve
Temperature Sensor
Outdoor Unit HEX
Outdoor
Vapor Valve
Temperature Sensor
Unit HEX
Temperature
Sensor
Upper Outdoor
EEV Close
Lower Outdoor
EEV
Heatsink
Pressure Sensor
Remarks
Pressure Switch
REFRIGERANT FLOW DIAGRAMS
EEV
Indoor Unit
4-Way Valve 2
High Pressure
Sensor
s
4-Way Valve 1
Low
Lower Hot
Pressure Sensor
Suction
Close
s
Temperature
Sensor
Temperatue Sensor
Upper Hot
Vapor Valve
Receiver
Close
Receiver
Outlet
Accum
SC
Receiver
s
Suction
Inlet
Oil Return
Sub-Cooling Circuit Inlet
Temperature Sensor
Temperature Sensor
SVC Valve
Due to our policy of continuous product innovation, some specifications may change without notification.
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Heat Pump Operation — Oil Return and Defrost
Indoor HEX EEV
M
Pressure Switch
Oil Separator
Comp
Discharge
Inverter
Comp
Comp Vapor
Injection
Sub-Cooling Circuit
Outlet Temperature Sensor
Sub-Cooling HEX
SC
EEV
Check Valve
EEV
High Temperature High Pressure Vapor
High Temperature High Pressure Liquid
High Temperature High Pressure Liquid (Conditional)
Low Temperature Low Pressure Vapor
Indoor Unit
High Pressure Vapor Pipe
Low Pressure Vapor Pipe
Liquid Pipe
Liquid Pipe
Temperature Sensor
Solenoid Valve
Strainer
19