LG Multi V Service Manual

Functions
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All rights reserved. Only training and service purposes.
Are whole indoor units
operating
cooling mode?
Solenoid valve open
for liquid bypass
(High pressure gas →
Low pressure gas valve)
Indoor units operating
Yes
No
2.1 Oil Return/Defrost Control
2.2 Liquid Bypass Control
2.3 Subcooling EEV Control
Target : about 25 ℃(77 ℉)
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
2. Special Control
Component Starting Running Ending
Inverter compressor Stop 60 Hz 40 Hz
High pressure gas valve Keep Close Open or Close
Low pressure gas valve Keep Open Open or Close
Balancing valve Open for 30s Close Close

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)