LG Multi V Service Manual

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All rights reserved. Only training and service purposes.
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
Indoor Unit
1200 ơ 600 ơ
60~100 pulse
1200
ơ 600 ơ
Normal Control
Normal control
Ending
400~800 pulse
400~800 pulse
Running
60~100 pulse
Normal control
Normal control Normal control
Starting
Thermo off unit EEV
Thermo on unit EEV
Fan
Component
Outdoor Unit
4way valve 1
Subcooling EEV
Main EEV
Fan
Inverter compressor
Component
ON
Min. pulse Min. pulse Min. pulse
Normal control
OFF OFF
30 Hz
Starting
Max. pulse
Setting Value
Running
ON
200 pulse300 pulse
40 Hz
Ending
OFF
Heat Recovery : OFF
Heat pump : OFF
4way valve 2 OFF OFF
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)