LG ARUB80LT2 Installation Manual page 68

Main PCB
Group Number setting
Group Number setting for Indoor Units
Confirm the power of whole system(Indoor Unit, Outdoor Unit) is OFF, otherwise turn off.
The communication lines connected to INTERNET terminal should be connected to central control of Outdoor
unti with care for their polarity( A ¡ A, B ¡ B )
Turn the whole system on.
Set the group and Indoor Unit number with a wired remote control.
To control several sets of Indoor Units into a group, set the group ID from 0 to F for this purpose.
SODU
B
B
68 Outdoor Unit
Terminal block on the main PCB
IDU
A
A
Group recognizing the simple central controller
No.0 group (00~0F)
No.1 group (10~1F)
No.2 group (20~2F)
No.3 group (30~3F)
No.4 group (40~4F)
No.5 group (50~5F)
No.6 group (60~6F)
No.7 group (70~7F)
No.8 group (80~8F)
No.9 group (90~9F)
No. A group (A0~AF)
No. B group (B0~BF)
No. C group (C0~CF)
No. D group (D0~DF)
No. E group (E0~EF)
No. F group (F0~FF)
INTERNET DRY1
A
B
B(D) A(C)
DRY2 GND 12V