Communication Error Between Main Pcb And Fan Pcb - LG multi V PLUS Service Manual

Self-diagnosis function
Fault diagnosis and Trouble shooting guide
Error
Error Item
Display No.
Communication error
between main PCB and
105
fan PCB
108
Trouble shooting Flow
Is communication
line between the main PCB and the fan
PCB normal?
Is the communication LED on?
Check or replace the main PCB/the fan PCB
282 Trouble Shooting Guide
Meaning
Communication error
between main PCB
and fan PCB
No
Yes
No
Yes
Major Error Occurrence Cause
• No connection of communication line
• Short or fusing of communication line
• Poor outdoor unit PCB
• Power input when the DC link capacitor
discharges
Check or reconnect
communication lines
Turn on a few minutes after power off