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4. Trouble Shooting
If the UPS system does not operate correctly, please solve the problem by using the table below.
Symptom
Possible cause
Remedy
No indication and alarm in the front
display panel even though the mains is
normal.
The AC input power is not
connected well.
Check if input cable firmly
connected to the mains.
The warning code 0B.
EPO function is activated. At
this time, the EPO switch is in
“OFF” status or the jumper is
open.
Set the circuit in closed
position to disable the EPO
function.
The warning code 01.
The external or internal
battery
is
incorrectly
connected.
Check if all batteries are
connected well.
The warning code 09.
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.
UPS is overload too long and
becomes fault. Then UPS shut
down automatically.
Remove excess loads from UPS
output and restart it.
Fault code is shown as 14,
15,
16,
17,
18 or 19,
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.
Other fault codes are shown on LCD
display and alarm beeps continuously.
A UPS internal fault has
occurred.
Contact your dealer
Battery backup time is shorter than
nominal value.
Batteries are not fully charged.
Charge the batteries for at
least 7 hours and then check
capacity. If the problem still
persists, consult your dealer.
Batteries defect
Contact your dealer to replace
the battery.
The warning code 0A.
Fan is locked or not working.
Or the UPS temperature is too
high.
Check fans and notify dealer.
The warning code 02.
The input neutral wire is
disconnected.
Check and correct the input
neutral connection. If the
connection is ok and the
warning is still displaying,
please refer to the LCD setting
section, to enter the neutral
loss check menu, to see if the
parameter3 is “CHE”. If it is,
please press the “Enter” key
firstly to make the “CHE” flash
and press the “Enter” key
secondly to make the UPS clear
the alarm. If the warning still
exists, please check input fuses
of L2 and L3.
The L2 or L3 input fuse is
broken.
Replace the fuse.
