If the UPS system does not operate correctly, use the table below to troubleshoot the problem.
4. Troubleshooting guide
Even though the mains supply
is normal, there are no status
indicators or alarms.
The icon and the warning code
become illuminated on the
LCD display, and the alarm starts
beeping once every second.
The and the icons become
illuminated on the LCD display,
and the alarm starts beeping once
every second.
The and icons become
illuminated on the LCD display
and the alarm starts beeping
once every second.
Fault code 27 and the
become illuminated on the LCD
display and alarm starts
beeping continuously.
The and icons become
illuminated on the LCD display and
the alarm starts beeping twice
every second
Fault code 43 becomes illuminated
along with the icon on the
LCD display, and the alarm starts
beeping continuously
The AC input is connected
to the UPS outlet.
The AC input cable is not
properly connected.
Live and neutral
conductors of UPS input
are reversed.
The external or internal
battery connection
is incorrect.
Battery voltage is too low
or the charger fails
UPS is overloaded
UPS is overloaded.
Devices connected to the
UPS are fed directly from
utility power via the Bypass
After repetitive overloads,
the UPS is locked in
Bypass mode. Connected
devices are fed directly
from utility power.
The UPS shuts down
automatically upon
detecting the overload
condition in the output
Battery voltage is too high
or the charger is fault
Rotate mains power socket by 180°
and then connect to UPS system
Check if all batteries are
properly connected.
Contact your dealer or service center
Please contact the dealer
or service center
Remove excess loads from the
UPS output
Remove excess loads from UPS output
Remove excess loads from the UPS
output first. Shut down the UPS
completely before restarting the unit
once again
Remove excess loads from the UPS
output and restart the unit once again
EPO function is enabled
Check to make sure the power cord is
firmly connected to a AC wall socket
Set the circuit in its closed position
to disable the EPO function
Plug the power cord to a wall socket.
Symptom
Possible cause
Remedy
Fault code 28 and the
icon become illuminated on the
LCD display and the alarm starts
beeping continuously.
Summary of Contents for FDC-003K
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