Always “On” UPS Systems Inc.
8
Version 1.4
8. TROUBLESHOOTING
Please follow the guidelines below for common problems:
Check UPS input plug and wiring.
Check UPS input voltage.
Please prepare the information as follows for service personnel:
UPS model number and serial number
Description of problem(s) in detail.
8.1. General
Problems
Problems Possible
causes
Solution
UPS has no reaction while
AC power from utility is
connected
Fuse at back panel open
No AC input
UPS fault
Battery failure
Replace Fuse
Check Utility AC power
Call for service
Call service center to replace batteries
UPS has no reaction while
AC power is connected, yet
starts after pushing power
on/off switch
Fuse at back panel burnt
No AC input
UPS AC detecting circuit fail
Check power cord
Replace fuse
Check Utility AC power
Call for service
UPS goes into back-up mode
while connected to AC power
Utility voltage or frequency
abnormal
UPS AC detecting circuit failure
Check AC power
Call for service
Battery can not provide
normal back-up power in the
event of a blackout
Battery deteriorated
Batteries not fully charged
Battery charger damaged
Charge batteries and reset
If that doesn’t work call for service
After AC connected to UPS,
alarm sounds short and fast
beeps and UPS shuts down
Abnormal utility power
Check input power
