Sympton 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 the
warning code flashing on LCD
display and alarm is sounding
2 short beeps every 2 seconds.
EPO function is activated. Set the circuit in close position
to disable EPO function.
The icon and flashing
on LCD display and alarm is
sounding 2 short beeps every
2 seconds.
Line and neutral conductors of
UPS input are reversed.
Rotate mains power socket by
180° and then connect to UPS
system.
The icon and
flashing on LCD display and
alarm is sounding 2 short
beeps every 2 seconds.
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 are
flashing on LCD display and
alarm is sounding 2 short
beeps every 2 seconds.
UPS is overloaded. Remove excess loads from
UPS output.
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
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.
4 TROUBLESHOOTING
If the Commander series do not operate correctly, please solve the problem by using the
table below.
20
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