LG Multi V Service Manual

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Copyright © 2020 LG Electronics Inc.
All rights reserved. Only training and service purposes.
Function
Note : Heating operation is not functional at an outdoor air temperature of 27 °C or more.
Cooling operation is not functional at an outdoor air temperature of 2 °C or less with indoor unit
combination of 10% or less
1.2 Compressor control
Fuzzy control : Maintain evaporating temperature(Te) to be constant on cooling mode and condensing
temperature(Tc) on heating mode by Fuzzy control to ensure the stable system performance.
[TC:47~51 °C(116.6~123.8 °F), Te:2~5 °C(35.6~41 °F)]
(1) Cooling mode
Te can be set various step at installation mode.
(2) Heating mode
Tc can be set various step at installation mode.
Note: By setting dip switch, Te and Tc are decided simultaneously.
1.1 Normal operation
1. Basic control
Compressor
Fan
Main EEV
Subcooling
Indoor Unit
EEV
EEV
Fuzzy control
Fuzzy control
Full open
Fuzzy control
Superheat fuzzy
control
Fuzzy control
Subcooling fuzzy control
Fuzzy control
Fuzzy control
Fuzzy control
Cooling operation Heating operationActuator
Stop
Stop
Min. pulse
Min. pulse
Min. pulse
Stop state
Fuzzy Control
Stop(0Hz)
Min. frequency
Fuzzy control start
Target
Inverter linear control as cooling and heating load increasing
System Capacity
Cooling and heating load
(Linear Control)
(Linear Control)
(Linear Control)
Inverter
Inverter
Compressor
Compressor
Inverter
Compressor

LG Multi V Specifications

General

Brand	LG
Model	Multi V
Category	Air Conditioner
Language	English