LG Multi V ARWM072CAS5 Service Manual page 21

2.1.2 Oil return control on heating mode
Outdoor unit
Component
Inv Compressor
Main EEV
Subcooling EEV
4way valve 1
4way valve 2
Indoor Unit
Component
Fan
Thermo on unit EEV
Thermo off unit EEV
• Oil return operation time : 3 min for running step
• Starting condition:same as cooling mode
• Oil return process ends if compressor protection control starts
Starting
30 Hz
Max. pulse
Min. pulse
ON
Heat Recovery : OFF
Heat pump : OFF
Starting
Normal control
Normal control
80~130 pulse
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Running
Setting Value
Max. pulse
20 pulse
OFF
OFF
Running
OFF
400~800 pulse
400~800 pulse
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Function
Ending
40 Hz
Normal control
80 pulse
OFF
OFF
Ending
Normal control
Normal control
80~130 pulse