Troubleshooting Guide
- 137 -
Copyright ©2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Are there any
communication wire of
RS-485 connections
normal?
Are there any overlap of
IDU address?
Is Simple central
controller setting
normal?
Recheck power and
installation condition
<RS-485 communication wire miss connection>
Yes
Yes
Yes
No
No
No
1. Reconnect RS-485 communication wire
Reset the overlap of IDU address for single address
1. Set the slave mode with Simple central controller after reset.
1. RS-485 communication wiring defect
2. Communication defect between
remote controller and indoor unit
3. RS-485 dip switch setting error
4. Indoor unit addressing ssetting error
on central controller
Error No. Error Type Error Point Main Reasons
Network error of central con-
troller
Network Error
242*
Master
2421
n Error diagnosis and countermeasure flow chart
To Next Page
Loading...
