MaxPower Corp XVT Series - Manual (Page 12)

XVT USER'S MANUAL UNINTERRUPTIBLE POWER SUPPLY (UPS)
Xtreme Power Conversion® Corporation (Rev 8/29/13) Page 12
Note: * means any situation
ALARMS
Alarm Indication Unit Status
Buzzer every 5 sec DC start
Buzzer every 1 sec Self test
2 buzzer every 1 sec Low battery
4 beep every 2.4 sec Overload
3 buzzer every 1 sec Overheat
Input is off, long beep, power off after 5 sec Short circuit