LG Multi V Service Manual

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Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
2.1 Oil return control
2.1.1 Oil return control on cooling mode
Oil return operation recovers Oil level in compressor by collecting oil accumulated in pipe.
Each cycle component operates as shown on the below table during oil return operation.
n Oil return operation time : 3 min for running step
n Starting condition : Every 8 hours operate
n Oil return process ends if compressor protection control starts
OFF
40 pulse
Normal control
Normal control
Ending
ON
400 pulse
Normal control
Normal control
Running
OFF
40 pulse
Normal control
Normal control
Starting
Oil return signal
Thermo off unit EEV
Thermo on unit EEV
Fan
Component
Outdoor Unit
Indoor Unit
Min. pulse
Max. pulse
Normal control
30Hz
Ending
Min. pulse
Max. pulse
Normal control
Setting Value
Running
Min. pulse
Max. pulse
Normal control
30Hz
Starting
Subcooling EEV
Main EEV
Fan
Inverter compressor
Component
OFFOFF
OFFOFF
OFF
Heat Recovery : OFF
Heat pump : ON
4way valve 1
4way valve 2
2. Special control
Function

LG Multi V Specifications

General

Brand	LG
Model	Multi V
Category	Air Conditioner
Language	English