27
9. TROUBLESHOOTING
Problem
Possible Cause
Solutions
No LED display on
the front panel.
Low battery.
Charge the UPS at
least 8 hours.
Battery fault.
Replace the battery
with the same type of
battery.
The UPS it’s not
turned on.
Press the power
switch again to turn
on the UPS.
Alarm continuously
sounds when the
mains is normal.
UPS overload.
Remove some
devices first. Before
reconnecting
equipment, please
verify that the load
matches the UPS
capability specified in
the specs.
When power fails,
back-up time is
short.
UPS overload.
Remove some critical
load.
Battery voltage is
too low.
Charge the UPS at
least 8 hours.
Battery defect. It
might be due to
high temperature
operation
environment, or
improper operation
to battery.
Replace the battery
with the same type of
battery.
The mains is
normal
but LED is
flashing.
Power cord is
loose.
Reconnect the power
cord properly.
