24
4 TROUBLESHOOTING
If the UPS system does not operate correctly, please solve the problem by using the table below.
Abbreviation Display content Meaning
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 the warning code
flash on LCD display and alarm is
sounding every 2 seconds.
EPO function is activated. Be sure that the EPO terminal
is connected securely.
The icons of and the warning
code flash on LCD display. Alarm is
sounding every 2 seconds.
The external or internal battery
is incorrectly connected.
Check if all batteries are
connected well.
Fault code is shown as 27 on LCD display
and alarm is continuously sounding.
Battery voltage is too high or
the charger is fault.
Contact your dealer.
Fault code is shown as 28 on LCD display
and alarm is continuously sounding.
Battery voltage is too low or the
charger is fault.
Contact your dealer.
The icons and flash on LCD
display. Alarm is sounding 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.
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 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.
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