LG AMNW07GSJA0 Svc Manual page 152

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6.7 Troubleshooting Outdoor Error
CH 52 (PCB Communication Error)
Environment interfering PCB communication
Purpose Installation environment interfering the
communication
Insufficient insertion of wires
OK
Damage of wire coating
: Interference with wires or wire coating damage with chopping
Inverter PCB LED
: Replacement of inverter PCB during LED Off after resetting
Items for checking Checking method of faulty points
NG
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5. Trouble Shooting
OK
NG
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