EN
Trouble Shooting
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 the unit is on
battery mode.
Power cord is loose.
Reconnect the power cord properly.
