LG MULTI V IV ARNU07GTU 2 Series - Page 21

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Only for training and service purposes
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2.1.2 Oil return control on heating mode
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
Outdoor Unit
Indoor Unit
80~130 pulse
Normal control
Normal control
Ending
400~800 pulse
400~800 pulse
OFF
Running
80~130 pulse
Normal control
Normal control
Starting
4way valve
Subcooling EEV
Main EEV
FAN
Inv Compressor
Component
ON
Min. pulse
Upper : Min. pulse
Low : Max. pulse
Normal control
30Hz
Starting
OFF
20 pulse
Upper : Min. pulse
Low : Max. pulse
Normal control
Setting Value
Running
ON
80 pulse
Upper : Normal control
Low : Normal control
Normal control
40Hz
Ending
Thermo off unit EEV
Thermo on unit EEV
Fan
Component
Function