LG MULTI V M ARNU07GTU 4 Series - Page 18

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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
MULTI V M
4way valve
Subcooling EEV
Main EEV
Fan
Inverter compressor
Component
ON
Min. pulse Min. pulse Min. pulse
Normal control
OFF OFF
30Hz
Starting
Max. pulse
Setting Value
Running
ON
200 pulse300 pulse
40Hz
Ending
ON ơ OFF ơ ON
Function