Communication Error Between Wired Remote Controller And Indoor Unit - LG multi V PLUS Service Manual

Fault diagnosis and Trouble shooting guide
Error Display
Error Item
No.
Communication error
between wired remote
03
controller and indoor unit
Failure Checking Method
Check transmission signal from the
indoor PCB is normal
Is transmission signal normal?
Check connection between indoor unit
and wired remote controller
Is connection normal?
Check or replace the
wired remote controller
Meaning
If failing to receive wired
remote control signal at the
indoor unit
Yes
Yes
Self-diagnosis function
Major Error Occurrence Cause
• Defective wired remote control
• Defective indoor unit PCB
• Poor connection, contact
No
Replace the indoor unit PCB
No
Repair the
connection
Service Manual 263