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A01-00104 Rev A
6.0 TROUBLESHOOTING
The troubleshooting information provided in this section should help you 
discover the cause of most commonly encountered difculties. Before follow-
ing the troubleshooting steps provided, be certain that you have veried the 
following items:
•  The UPM should be plugged into a properly working outlet.
•  The line voltage to the UPM is within specied boundaries.
•  The circuit breaker on the rear panel of the UPM has been reset.
•  The battery enable plug(s) is installed.
Problem Possible Cause Action you should take
UPM does not 
power up and has 
no audible alarm
1. On/Off Button not pressed 
long enough.
2. No incoming line voltage 
or voltage too high or too 
low.
3. UPM input power cord is 
not plugged in.
4. Rear panel circuit breaker 
is tripped.
1.  Press and hold the On/Off switch 
for 3 seconds min.
2.  Check wall socket and test for 
proper line voltage.
3.  Plug in input power cord.
4.  Reduce load and reset circuit 
breaker.
UPM Over-
load LED’s are 
illuminated and 
continuous audible 
alarm sounds
UPM is overloaded. Reduce load by removing the least 
critical load items from the UPM 
output.
Low/Replace 
Battery LED is 
illuminated
Battery voltage is too low or 
battery is dead.
Recharge battery for at least six 
hours and reset UPM. If LED is still 
illuminated, replace the battery.
Site Wiring Fault 
LED is illuminated
Site wiring problem. Contact a qualied electrician to 
verify wiring at this site.
Backup time is 
less than expected
Battery is not fully charged or 
battery is dead.
Recharge battery for at least six 
hours and retest back up time.
UPM is normal, 
but the computer 
will not turn on.
Computer input power cord 
is loose or not connected.
Connect the power input power 
cord.