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4. Troubleshooting
If the UPS system does not operate correctly, please solve the problem by using the table below.
Issue
Possible Cause
Solution
No indication showing on LED or alarm
sounding that there’s power coming
into the unit.
The AC input power is not
connected well.
Check if input power cable
firmly connected to the mains.
The AC input is connected to
the UPS output.
Plug the AC input power cable
into the AC input.
The icon
and the warning code
are flashing on LCD screen and
alarm is sounding every 2 seconds.
EPO (emergency power off)
function is activated.
Set the circuit in close position
to disable EPO function.
The icon
and
are flashing
on LCD screen and alarm is sounding
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
are
flashing
on LCD screen and 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 and the
alarm is continuously sounding.
Battery voltage is too high or
the charger is fault.
Contact your dealer.
Fault code is shown as 28 and the
alarm is continuously sounding.
Battery voltage is too low or
the charger is faulty.
Contact your dealer.
The icon
and the icon
are
flashing on LCD screen and alarm is
sounding every second.
UPS is overloaded
Remove excess loads from UPS
output.
Fault code is shown as 43 and the icon
is lighting on LCD screen and
alarm is continuously sounding.
The UPS shut down
automatically because of an
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 a short
circuit occurred at the UPS
output.
Check output wiring and if
connected devices are in short
circuit status.
Fault code is shown as 01, 02, 03, 11,
12, 13 and 41 on the LCD screen and
alarm is continuously sounding.
A UPS internal fault has
occurred.
Contact your dealer
The battery backup time is shorter
than the nominal value.
The batteries are not fully
charged.
Charge the batteries for at
least 5 hours, and then check
capacity. If the problem still
persists, consult your dealer.
The batteries are defective.
Contact your dealer to replace
the battery.
Fault code is shown as 45 on LCD
screen. At the same time, alarm is
continuously sounding.
The charger does not have
output and the battery voltage
is less than 10V/PC.
Contact your dealer.
