7 Possible malfunctioning
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 is not turned on.
Press the power switch
again to turn on the UPS.
Alarm continuously
sounds when the
mains is normal.
The UPS is overload.
Remove some loads first.
Before reconnecting
equipment, please verify
that the load matches
the UPS capability specified
in the specs.
UPS fault
Return the unit to the service
center.
Alarm sounds every 2
seconds when the mains is
normal.
Battery defect.
Replace the battery with the
same type of battery.
Charging board is damaged.
Return the unit to the service
center.
When power fails,
back-up time is shorten.
The UPS is 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.
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