LG ARUB230BT2 Installation Manual page 55

Flow chart of auto-addressing for indoor units
Turn HR unit , indoor unit and outdoor unit on in
the order named.
Wait for 3 minutes
Press SW02V of the outdoor unit main PCB for 5
seconds
'88' is displayed on outdoor unit main PCB and
HRunit PCB
The number of the indoor units connected is
displayed at 7-SEG of the outdoor unit main PCB
after 2~7 minutes
The number of HR units connected is displayed
at 7-SEG of the outdoor unit main PCB
Are the number
of indoor units connected to the outdoor unit
wiring and displayed one equal?
Yes
Completion of auto addressing
No
Check power and communication wiring between
outdoor, HR and indoor units
Retry indoor unit auto-addressing after checking
trouble
Incompletion of auto addressing
HR Unit PCB
Installation Manual 55