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4. Troubleshooting guide
If the UPS system does not operate correctly, use the table below to troubleshoot the issue.
Symptom
Possible cause
Solution
Even though the mains supply is
normal, there are no status indicators
or alarms.
The AC input cable is not properly
connected
Check to make sure the power cord
is firmly connected to an AC wall
socket
The AC input is connected to the
UPS outlet
Plug the power cord to a wall socket
Warning code
0D
and
Battery
disconnect
are displayed. The
alarm beeps once every second
The external or internal battery
connection is incorrect.
Check if all batteries are properly
connected
Fault code
27
and
Battery too high
become illuminated on the LCD
display, and the alarm starts beeping
continuously.
Battery voltage is too high or the
charger fails
Contact your dealer of service center
Fault code
28
and
Battery too low
become illuminated on the LCD
display, and the alarm starts beeping
continuously.
Battery voltage is too low or the
charger fails
Please contact your dealer of service
center
Warning code
0F
and
Overload
become illuminated on the LCD
display, and the alarm starts
beeping twice every second
UPS is overloaded
Remove excess loads from UPS
output
UPS is overloaded. Devices
connected to the UPS are fed
directly from utility power via the
Bypass
Remove excess loads from the UPS
output
After repetitive overloads, the UPS is
locked in Bypass mode. Connected
devices are fed directly from utility
power.
Remove excess loads from the UPS
output first. Shut down the UPS
completely before restarting the unit
once again
Fault code
43
and
Overload fault
become illuminated on the LCD
display, and the alarm starts beeping
continuously
The UPS shuts down automatically
upon detecting the overload
condition in the output
Remove excess loads from the UPS
output and restart the unit once
again
Fault code
14
and
Inverter short
become illuminated, and the alarm
starts beeping continuously
The UPS shuts down automatically
upon detecting the overload
condition in the output
Check the output wiring and whether
the connected devices are
short-circuited
Fault codes
01, 02, 03, 04, 11, 12,
13, 41
or
45
become illuminated on
the LCD display, and the alarm starts
beeping continuously
A UPS internal fault has occurred.
There are two possible causes:
1. Power is continued to be supplied
to the load but it is done directly from
the AC grid via a bypass
2. Power is no longer supplied to the
load
Please contact the dealer or service
center
Battery backup time is shorter than
its nominal value
Batteries are not fully charged
Charge the batteries for at least 5
hours and then check their capacity.
If the problem persists, consult your
dealer
Defective batteries
Contact your dealer for a
replacement
