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INDICATION POSSIBLE CAUSE SOLUTION
Alarm LED ON
UPS fault
Remove the loads from the UPS outlets.
Turn o the UPS and disconnect it from
the mains. Connect the UPS to the
mains and turn on again.
If the problem persists, contact the
LEGRAND Technical Support Service.
Intermittent alarm sound
with the UPS working in
normal mode
Overload
Disconnect some non-critical loads
from the UPS outlets until the overload
ceases
The UPS doesn’t work
in stored energy mode
or the backup time is
shorter than its intended
performance
Low battery or battery
fault
If the backup time remains
unsatisfactory after 8 hours of battery
charging, contact the LEGRAND
Technical Support Service
The UPS is working
normally but the loads are
not powered
-
Check that all power cords are properly
connected.
If the problem persists, contact the
LEGRAND Technical Support Service.
The UPS works on battery
mode even though the
mains power is available
The UPS fuse blew up Replace the fuse with a new one
The mains power supply
socket is not supplying
power to the UPS
Check that the UPS works on another
socket. If so, have the initial mains
power supply socket checked by a
qualied electrician.
Strange noise or smell UPS fault
Shut down immediately the UPS.
Unplug the UPS from the mains socket
and contact the LEGRAND Technical
Support Service.
5 Troubleshooting
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