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4. Troubleshooting
If the UPS system does not operate correctly, please solve the problem by using the table below.
Symptom
Possible cause
Remedy
No indication and alarm even
though the mains is normal.
The AC input power is not
connected well.
Check if input power cord
firmly connected to the
mains.
The AC input is connected
to the UPS output.
Plug AC input power cord to
AC input correctly.
The icon
and
flashing on LCD display and alarm
is sounding every second.
The external or internal
battery is incorrectly
connected.
Check if all batteries are
connected well.
Fault code is shown as 27 and
alarm is continuously sounding.
Battery voltage is too high
or the charger is fault.
Contact your dealer.
Fault code is shown as 28 and
alarm is continuously sounding.
Battery voltage is too low
or the charger is fault.
Contact your dealer.
The icon
and
is
flashing on LCD display and alarm
is sounding twice every second.
UPS is overload
Remove excess loads from
UPS output.
UPS is overloaded. Devices
connected to the UPS are
fed directly by the electrical
network via the Bypass.
Remove excess loads from
UPS output.
After repetitive overloads,
the UPS is locked in the
Bypass mode. Connected
devices are fed directly by
the mains.
Remove excess loads from
UPS output first. Then shut
down the UPS and restart
it.
Fault code is shown as 43 and The
icon
is lighting on LCD
display and alarm is continuously
sounding.
The UPS shut down
automatically because of
overload at the UPS output.
Remove excess loads from
UPS output and restart it.
Fault code is shown as 14 and the
icon
is lighting on LCD
display and alarm is continuously
sounding.
The UPS shut down
automatically because
short circuit occurs on the
UPS output.
Check output wiring and if
connected devices are in
short circuit status.
Fault code is shown as 01, 02, 03,
04, 11, 12, 13, 41 and 45 on LCD
display and alarm is continuously
sounding.
A UPS internal fault has
occurred. There are two
possible results:
1. The load is still supplied,
but directly from AC power
via bypass.
2. The load is no longer
supplied by power.
Contact your dealer
