LG Multi V Manual page 67

Error
Error Type
No.
All Indoor units are not
07
running in same mode
I Error diagnosis and countermeasure flow chart
Is operation mode of
outdoor & Indoor units
same? *
Yes
Is operation mode of
outdoor and dry contact
same ? ****
Yes
Adjust the dry
contact setting
* Check mode selection setting of wired remote controller.
** Error(CH07) removal method with remote controller
1. With wired remote controller
Turn off the indoor unit by pressing the ON/OFF button.
The error code will be removed automatically after few seconds.
2. With wireless remote controller
Turn off indoor unit and then turn on by changing operation mode.
The error code will be removed automatically after few seconds.
**** After replacing the indoor unit PCB, make sure to be done to do Auto addressing and input the address of central control
***** If ODU Dry Contact function is set , different mode operation error may be occurred because the operation mode is fixed.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Error Point
The Indoor units started
later are operated in dif-
ferent mode from earlier
one.
Does error code
No
disappear
after set operation
mode same?**
Yes
END
No
- 67 -
Troubleshooting Guide
Main Reasons
1. Indoor units are in different mode
2. PCB fault
3. cabled remote controller fault
❊ Checking ch07 method
IDU doesn't operate as Operation mode is
flickering at IDU wired remote controller and IDU
display window.
No
Replace Indoor PCB***
LGE Internal Use Only