Possible Malfunctioning - LEGRAND Keor LP Manual

Troubleshooting
Problem
Fault LED
Read the
error code*
(see next page)
displayed by
the combination
of LEDs, and verify
the fault as follows.
UPS fails to provide
battery backup or its
backup time is shorter
than its intended
performance.
UPS is normal, but
there is no output to
the load.
40
®
Check Items
1. Check for proper battery connection. Measure
1. Er05,Er24
2. Disconnect some non-critical loads from the UPS
2. Overload 1
2
1
3. Remove any objects obstructing the ventilation
3. Er11
(UPS Over 2
Temperature)
4. Site wiring/
4. Check if the "L" and "N" phases of the utility
Ground fault
1
5. Er14 5. Verify that the ventilating fans are functioning
(Fans out
2
of order)
6. Other error
6. Consult your local dealer for assistance.
codes
If the backup time remains unsatisfactory after 8
hours of charging please contact your local dealer
for battery replacement.
Check that all
power cords If the problem persists consult your local dealer for
are properly technical assistance.
connected.

8 Possible malfunctioning

Solution
battery voltage to ensure that batteries are
charged and healthy. Recharge batteries for 8
hours if necessary. Simulate utility outage to verify
that UPS is able to provide DC backup. Otherwise
consult your local dealer right away.
output until the overload ceases. Check if there
is any short circuit between cables due to broken
cable insulation. Replace the cables if necessary.
louvers. Verify that the cooling fans are working
properly. Contact your local dealer to replace the
fans if necessary.
AC source have been wrongly wired or if the
Ground-Neutral voltage exceeds the limits.
properly. Do not attempt to replace the fans
yourself. Contact your local dealer for replacement.