Battery Backup Power BBP-AR-2000-PSW-ONL User Manual page 24

4.3.2.4 UPS Locked up
UPS may lock itself up while there was critical abnormal or failure
condition happened. User may see LCD display as below figure-N.
N
INPUT
The procedures to release UPS from locked up status are as below:
(a) Check and record the error code.
(b) Check user's manual to understand possible cause, solve the problem
or call service provider.
(c) Press OFF key
(d) Unplug AC input power cord or turn off power source switch.
(e) After UPS completely shut off, UPS is unlocked.
UPS LOAD
Buzzer Code
and hold for 5 seconds until twice beep heard.
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