LG ARUN Series Service Manual page 85

Error
Error Type
No.
Indoor unit communication error
11
I Error diagnosis and countermeasure flow chart
After ODU main PCB
reset, error code
disappears?
Yes
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Only for training and service purposes
Indoor unit doesn't get sig-
nal from ODU for 3 minutes
continuously
No
After Auto addressing,
error code disappears?
Yes
END
Error Point
1. Indoor 485 communication PCB fault
2. After PCB replacing, auto addressing
was not done
No
Replace indoor unit 485
communication PCB
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Troubleshooting Guide
Main Reasons
LGE Internal Use Only