10
Owner’s manual
EN
TROUBLE SHOOTING
PROBLEM
POSSIBLE CAUSE
ACTION TO TAKE
UPS cannot turn on
Battery voltage less than
10V
Recharge the UPS at least
6 hours
UPS always at battery
mode
Power cord loose
Plug in the power cord
AC fuse burnt out
Reset the AC fuse
Line voltage too high, too
low or black out
Normal condition
Backup time too short
Battery not fully charged
Recharge the UPS at least
6 hours
Buzzer continuous beep-
ing
Overload
Remove some loads
Battery exhaustion
Charge the battery
