Check wiring if OK either comms cable picking up external electrical noise defective CNU or Interface. Indoor unit return air sensor fault Open or Short.
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Lg Air Conditioning Fault Codes.
. Disconnect sensor from PCB and. No response from Air Conditioner. Full list of fault codes for Lg units.
Kinks bends and turns also need to be minimized these reduce air flow and could hamper the efficiency and effectiveness of the air conditioner. Like most central air conditioning parts flexible ducts have specific installation requirements. For example flexible ductwork needs to be secured and supported properly ensuring little sagging or snaking.
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