LG MULTI V IV ARNU12GTU 2 Series User Manual

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Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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 : When low oil level which is measured by oil level sensor is kept continuously then oil
return operation will be start.
n Oil return process ends if compressor protection control starts
OFF
80 pulse
Normal control
30Hz
Ending
OFF
20 pulse
Normal control
Setting Value
Running
OFF
Min. pulse
Upper : Min. pulse
Low : Max. pulse
Upper : Min. pulse
Low : Max. pulse
Upper : Normal control
Low : Normal control
Normal control
30Hz
Starting
4way valve
Subcooling EEV
Main EEV
FAN
Inv Compressor
Component
OFF
40 pulse
Normal control
Normal control
Ending
ON
400 pulse
Normal control
OFF
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
2. Special control
Function

LG MULTI V IV ARNU12GTU 2 Series Specifications

General

Brand	LG
Model	MULTI V IV ARNU12GTU 2 Series
Category	Air Conditioner
Language	English