LG Multi V Manual&Nbsp;

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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2.1.2 Oil return control on heating mode
■ Oil return operation time : 3 min. for running step
■ Starting condition:same as cooling mode
■ Oil return process ends if compressor protection control starts
Outdoor Unit
Indoor Unit
OFF
Min. pulse
Normal control
Normal control
Ending
ON
1200 pulse
1200 pulse
OFF
Running
OFF
Min. pulse
Normal control
Normal control
Starting
Hot gas bypass valve
4way valve
Subcooling EEV
Main EEV
Fan
Inverter compressor
Component
ON
ON
Normal control
Normal control
Normal control
30Hz
Starting
ON
Normal control
Max. pulse
Setting Value
Running
ON
ON
200 pulse
Normal control
Normal control
30Hz
Ending
Oil return signal
Thermo off unit EEV
Thermo on unit EEV
Fan
Component
0Hz → Normal control → 700 RPM
ON → OFF → ON
Function

LG Multi V Specifications

General

Type	VRF (Variable Refrigerant Flow)
Compressor Type	Scroll
Refrigerant	R410A
Energy Efficiency	High
Control System	Centralized and individual control options
Indoor Units	Multiple types available (e.g., ceiling cassette, wall-mounted, ducted)