LG MULTI V IV ARNU07GTU 2 Series User Manual

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Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
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 combina-
tion of 10% or less
*: The main EEV of ARUN***LTS4 is controlled in the same way with Low EEV. (ARUN***LTS4 have only 1
Main EEV.)
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, Te:2 ~ 5°C)
(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
Upper : Min. pulse
*Low : Full open
Fuzzy control
Superheat fuzzy
control
• Normal : Vapor injection
• Avoiding control of high
discharge temperature
Subcooling fuzzy control
Fuzzy control
Fuzzy control
Fuzzy control
Cooling operation Heating operationActuator
stop
stop
Stop state
Min. pulse
Min. pulse
Min. pulse
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
Comp 2
Inverter
Comp 1
Inverter
Comp 2
Inverter
Comp 3
Inverter
Comp 1
Inverter
Comp 2
Inverter
Comp 3
Inverter
Comp 4
Inverter
Comp 1
Function

LG MULTI V IV ARNU07GTU 2 Series Specifications

General

Brand	LG
Model	MULTI V IV ARNU07GTU 2 Series
Category	Air Conditioner
Language	English