LG MULTI V IV ARNU07GTU 2 Series Service Manual page 21

2.1.2 Oil return control on heating mode
Outdoor Unit
Component
Inv Compressor
FAN
Main EEV
Subcooling EEV
4way valve
Indoor Unit
Component
Fan
Thermo on unit EEV
Thermo off unit EEV
n Oil return operation time : 3 min for running step
n Starting condition:same as cooling mode
n Oil return process ends if compressor protection control starts
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Only for training and service purposes
Starting
30Hz
Normal control
Upper : Min. pulse Upper : Min. pulse
Low : Max. pulse Low : Max. pulse
Min. pulse
ON
Starting
Normal control
Normal control
80~130 pulse
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Running
Setting Value
Normal control Normal control
Upper : Normal control
Low : Normal control
20 pulse
OFF
Running
OFF Normal control
400~800 pulse Normal control
400~800 pulse 80~130 pulse
LGE Internal Use Only
Function
Ending
40Hz
80 pulse
ON
Ending