LG ATNH09GRLE2 Svc Manual page 126

6.7 Troubleshooting Outdoor Error
CH 05/53 (Indoor/Outdoor Device Communication Error) → Detection by indoor devices
Items
Purpose
Condition for Generation Damage and installation of outdoor device PCB
Items for
checking
Resetting
power source
Outdoor PCB
Installation
Replacing
indoor
PCB
Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Checking for smooth data sending/receiving between indoor/outdoor
devices
Normal
Operation
Checking for
LED Off
Wire
connection
state
Communication
cable length
- 126 -
Contents
Sub-items for
checking
Insert
Connector
No power
Wire tongue
termination
Communication
cable length
4. Trouble Shooting
Check LGMV
Communication
rate
Grounding
LGE Internal Use Only