LG CT12 NR2 - CH 52 (PCB Communication Error)

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4. Trouble Shooting
Items Contents
Purpose
Checking the communication state between Main PCB and Inverter PCB
Condition for Generation Generation of noise source interfering with communication
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Items for checking Sub-items for checking
Resetting
power source
Connector
Insufficient insertion
of housing
Damage of
wire coating
Check the Heat sink
and Chassis Panel
Checking
power source
LED Off
Damage of
wire coating
Replacement of
inverter PCB
Replacement of
main PCB
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6.7 Troubleshooting Outdoor Error
CH 52 (PCB Communication Error)