Troubleshooting - Ametek 420VA Manual

7.0 TROUBLESHOOTING

The troubleshooting information provided in this section should help you
discover the cause of most commonly encountered difficulties. Before
following the troubleshooting steps provided, be certain that you have
verified the following items:
• The UPM should be plugged into a properly working outlet.
• The line voltage to the UPM is within specified boundaries.
• The circuit breaker on the rear panel of the UPM has been reset.
• The battery enable plug(s) is installed.
Problem
UPM does not power
up and has no
audible alarm
UPM Overload LED's
are illuminated and
continuous audible
alarm sounds
Low/Replace Battery
LED is illuminated
Site Wiring Fault LED
is illuminated
Backup time is less
than expected
UPM is normal, but
the computer will not
turn on.
A01-00055 Rev G
Possible Cause
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
UPM is overload
Battery voltage is too low or
battery is dead
Site wiring problem
Battery is not fully charged or
battery is dead
Computer input power cord is
loose or not connected
Action you should take
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.
Reduce load by removing the least
critical load items from the UPM output.
Recharge battery for at least six hours
and reset UPM. If LED is still illuminated,
replace the battery.
Contact a qualified electrician to verify
wiring at this site.
Recharge battery for at least six hours
and retest back up time.
Connect the power input power cord.
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