Possible Problems And Solutions - LEGRAND WHAD 3 100 96 Manuel D'installation

Problems
When the UPS is switched on,
the buzzer sounds and the red ALARM
LED makes intermittent short-long
flashes, then the UPS switches off
after 15 seconds
The UPS works but every 12 seconds
there is a short beep and the yellow
BATTERY LED is always lit up.
The UPS works but it beeps
intermittently, the red ALARM LED
flashes and the yellow BYPASS LED is
always lit up.
The UPS beeps continuously and
the yellow BATTERY LED flashes for
about 15 seconds, after which the UPS
switches off.
The UPS works but the green MAINS
LED flashes quickly
The UPS beeps intermittently and the
red ALARM LED flashes quickly
if the AlArM leD and / or BYPAss leD are not lit up, the UPs can operate normally although
the power will be reduced.
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8 Possible problems and solutions

- The connection of the neutral conductor is wrong:
invert the power supply plug, or exclude the
neutral sensor (using the software supplied)
- Check power is present at the mains socket.
- Check that the UPS power supply cable is correctly
inserted in both the mains socket and in the UPS
connector
- There is an overload on the UPS output. Reduce
the quantity of appliances connected so that the
load does not exceed the maximum power that
the UPS can supply.
- The UPS has completely flattened its batteries;
it can only start up again when the input line
is present. Check the magneto-thermal or
differential switches that precede the UPS
- The mains supply is out of the limits permitted for
the voltage and/or frequency, but it can still be
used by the UPS. However, the bypass function is
not operational.
- The thermal protection has intervened.
Switch the UPS off and wait for a few minutes so
that the internal temperature of the UPS can get
back to normal.
Check that the fans operate correctly and that the
relative airflow is not obstructed (e.g. if the UPS is
too close to a wall).
- There is a fault on one of the internal circuits.
Contact your nearest service centre.
solutions