LG MULTIV III Service Manual page 18

Functions
2. Special Control
2.1 Oil Return/Defrost Control
Component
Inverter compressor
High pressure gas valve
Low pressure gas valve
Balancing valve
2.2 Liquid Bypass Control
2.3 Subcooling EEV Control
Target : about 25°C
Subcooling EEV works with Fuzzy rules to keep the degree of subcooling at the outlet of subcooler during
simultaneous operation
The degree of subcooler = T outlet of subcooler – T inlet of subcooler
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Only for training and service purposes
Starting Running
Stop
Keep
Keep
Open for 30s
Indoor units operating
Are whole indoor units
operating
cooling mode?
Yes
Solenoid valve open
for liquid bypass
(High pressure gas →
Low pressure gas valve)
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Ending
60 Hz 40 Hz
Close Open or Close
Open Open or Close
Close Close
No
LGE Internal Use Only