Lowell Manufacturing Company | UPS6LI Series
Page 7
7.
Troubleshooting
Condition
Visual Indicator
Alarm
No LED display on the front UPS
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 on the front
of the UPS
Alarm continuously sounds when
the AC input is normal
The UPS is overloaded
Remove some of the load from the
output of the UPS
UPS fault
Return the unit for service
Alarm continuously sounds when
the AC input is normal
Battery defect
Replace the battery with the same
type of battery
Charging circuit is damaged
Return the unit for service
When power fails, backup time is
shorter than expected
The UPS is overloaded
Remove some of the load from the
output of the UPS
Battery voltage is too low
Charge the UPS at least 8 hours
Battery defect
Replace the battery with the same
type of battery
The AC input is normal but the blue
LED is flashing
Power cord is loose
Reconnect the input power cord
properly
