LG Multi V Manual page 26

Function
2) Step 2 : Communication check
- If all model code is displayed in 7 segment, communication between outdoor units is normal.
3) Step 3 : PCB error check
- After 40 sec, error check begins.
- All errors of units are displayed in 7 segment.
- If communication between main PCB and inverter PCB isn't normal, 521 is displayed in 7-segment.
If error is displayed, check corresponding wires.
4) Step 4 : Auto addressing of indoor units
- Auto addressing begins when address(red) button in Main PCB is pressed for 6 sec.
- During auto addressing, 7 segment on main PCB displays "88"
- After auto addressing, the number of indoor units is displayed in 7 segment for 30 sec. The address of each
indoor unit is displayed on each wired remote controller.
Push auto addressing(red) button for 6 sec.
Auto addressing starts
Auto addressing is in progress (max. 15 min.)
The number of indoor units is displayed for 30 sec.
Auto addressing process is finished.
Every indoor unit displays its address on
wired remote controller and the 7 segment of
main PCB is off.
Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
ON
1 2 3 4 5 6
1 2 3 4 5 6
(3 indoor units found)
- 26 -
ON
7 1 2 3 4 5 6 7
7 8 9 10 11 12 13 14
6 sec.
LGE Internal Use Only