LG ARNU Series User Manual

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Copyright ©2009 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 time : 3 min for running step
■ Starting condition:every 6 hours operate
Inv Compressor
Fan
Main EEV
4way valve
Subcooling EEV
45 Hz
0Hz
Full open
Off
min.
StartingComponent
Sub unit
compressor
All off
Hot gas bypass
valve
Off
60 Hz
High pressure
control
Full open
Off
min.
Running
On
Suction pipe temp.
control
40 Hz
High pressure
control
Full open
Off
min.
Ending
Off
Off
Fan Keep state
StartingIndoor unit
Thermo on unit
EEV
Oil return
pulse
Keep state
Running
Oil return operation
pulse
Keep state
Ending
Return to
base pulse
Thermo off unit
EEV
Close pulse
Oil return operation
pulse
Close pulse
2. Special control
Function

LG ARNU Series Specifications

General

Series	ARNU
Control	Remote Control
Cooling Capacity	9, 000 - 36, 000 BTU/h
Heating Capacity	9, 000 - 36, 000 BTU/h
Operating Temperature (Cooling)	18°C - 46°C
Power Supply	220-240V, 50Hz
Dimensions (Indoor Unit)	Varies by model
Dimensions (Outdoor Unit)	Varies by model
Weight (Indoor Unit)	Varies by model
Weight (Outdoor Unit)	Varies by model