Troubleshooting - LEGRAND DAKER DK Plus Installationsanleitung

5 Troubleshooting

INDICATION
Fault LED
Check the error code on
the display
(see error code table)
The UPS doesn't work
in stored energy mode
or the backup time is
shorter than its intended
performance.
The UPS is working
normally but the loads are
not powered
DIAGNOSTIC
Er05, Er39
intermittent sound
alarm
Er12
continuous alarm sound
Site wiring/Ground fault
Er11, Er14
intermittent sound
alarm
other error codes
-
-
DAKER DK Plus
1 kVA - 2 kVA - 3 kVA
SOLUTION
The batteries don't work properly.
Check for proper battery connection
and measure battery voltage to ensure
that batteries are charged.
Recharge the batteries for 8 hours.
If the problem persists or if it is
necessary to replace them, contact the
LEGRAND Technical Support Service.
Disconnect some non-critical loads
from the UPS output until the overload
ceases.
Check if there is any short-circuit between
the output cables due to a faulty
insulation. Replace the cables if necessary.
Check if the power cord is properly
plugged, respecting the "L" and "N"
wires. If not, re-plug the cord on the
socket turning it of 180°.
If the power cord is properly plugged,
check if the ground-neutral voltage
exceeds the limits.
Verify that the ventilating fans work
properly.
If the problem persists or if it necessary
to replace them, contact the LEGRAND
Technical Support Service.
Check the error code table.
If the problem persists, contact the
LEGRAND Technical Support Service.
If the backup time remains
unsatisfactory after 8 hours of battery
charging, contact the LEGRAND
Technical Support Service.
Check that all power cords are properly
connected.
If the problem persists, contact the
LEGRAND Technical Support Service.
57