Basic Control; Normal Operation; Compressor Control - LG ARWN038GA2 Service Manual

Function

1. Basic control

1.1 Normal operation

Actuator
Compressor
Main EEV
4 way valve

1.2 Compressor control

Fuzzy control : Maintain evaporating temperature(Te) to be constant on cooling mode and condensing tem-
perature(Tc) on heating mode by Fuzzy control to ensure the stable system performance.
(Tc:47 ~ 51°C (117 ~ 124°F), Te:2 ~ 5°C (36 ~41°F))
(1) Cooling mode
Te can be set by initial DIP switch setting. (Standard, Long pipe)
(2) Heating mode
Tc can be set by initial DIP switch setting. (Standard, Long pipe)
Note: By setting DIP switch, Te and Tc are decided simultaneously.
Fuzzy control start
Set frequency
Stop
Fuzzy Control
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Only for training and service purposes
Cooling operation Heating operation
Fuzzy control
Full open
OFF
Target
Fuzzy control
Fuzzy control
ON
(Linear Control) (Linear Control) (Linear Control)
Inverter linear control as cooling and heating load increasing
- 16 -
Stop state
Stop
Close
OFF
Inverter Inverter Inverter
Compressor Compressor Compressor
Cooling and heating load
LGE Internal Use Only