Electronics
AC Module System Installation Manual
Copyright © 2020 LG Electronics.
All Rights Reserved.
89
Rev. 1.0
D. Investigate the distribution panel and find the circuit breaker that works only for the branch
where all of the AC modules are attached. Then turn the circuit breaker off.
E. Disengage the AC connectors for the last module which is connected to the AC junction box.
For this step, make sure that the circuit breaker is properly turned off. Do not disconnect the AC
cable connectors under load.
F. During the daytime, check whether the LED blinks red or shows no lights. And keep the LED
status in mind or write it down in your notes.
Grid connectivity
Grid connection (5 min. after grid
connection)
Grid disconnection
Case
LED Status
LED off
LED off
abnormal A
Red Blinking LED
LED off
abnormal B
Red Blinking LED
Red Blinking LED
abnormal C
LED off
Red Blinking LED
normal
Distribution panel
AC junction box
An array of AC modules
Meter
N L1 L2
G
F : Check LED status
D
E