LG MULTI V WATER IV ARWN080LAS4

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Only for training and service purposes
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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
Main EEV
Subcooling
Indoor Unit
EEV
EEV
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
Cooling operation Heating operationActuator
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