Troubleshooting - LEGRAND NUMERIC Valura User And Installation Manual

4. Troubleshooting

If the UPS system does not operate correctly, please solve the problem by using the table below.
Symptom
No indication and alarm even though
the mains is normal.
The icon and flashing on
LCD display and alarm is sounding
every second.
Fault code is shown as 27 and the
icon is lighting on LCD display
and alarm is continuously sounding.
Fault code is shown as 28 and the
icon is lighting on LCD display
and alarm is continuously sounding.
The icon and
on LCD display and alarm is sounding
twice every second.
Fault code is shown as 43 and the
icon is lighting on LCD display
and alarm is continuously sounding.
Fault code is shown as 14 and the
icon is lighting on LCD display
and alarm is continuously sounding.
The AC input power is not
connected well.
The AC input is connected to the
UPS output.
The external or internal battery is
incorrectly connected.
Battery voltage is too high or the
charger is fault.
Battery voltage is too low or the
charger is fault.
UPS is overload
UPS is overloaded. Devices
connected to the UPS are fed
is flashing
directly by the electrical
network via the Bypass.
After repetitive overloads,
the UPS is locked in the Bypass
mode. Connected devices are fed
directly by the mains.
The UPS shut down automatically
because of overload at the UPS
output.
The UPS shut down automatically
because short circuit occurs on
the UPS output.
Possible cause Remedy
Check if the input power cord is
firmly connected to the mains.
Plug AC input power cord to AC
input correctly.
Check if all batteries are
connected well.
Contact your dealer.
Contact your dealer.
Remove excess loads from
UPS output.
Remove excess loads from
UPS output.
Remove excess loads from UPS
output first. Then shut down the
UPS and restart it.
Remove excess loads from UPS
output and restart it.
Check output wiring and if
connected devices are in short
circuit status.
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