Lowell Model UPS9C-1000 Manual
Pg. 8
Symptom
Possible Cause
Remedy
No indication and alarm even though
the mains is normal .
The AC input power is not connected .
Check if input power cord is firmly connected to
the mains .
The AC input is connected to the UPS
output .
Plug AC input power cord to AC input correctly .
The mains is normal but red LED is
flashing . The alarm is sounding every
second .
The internal battery connection is wrong .
Re-connect battery wires with correct polarity .
The alarm is sounding twice every
second and red LED is flashing .
UPS is overloaded
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 .
The mains is normal . But the unit is on
battery mode .
Battery is not fully charged .
Charge battery at least 5 hours . If battery is still
in low battery level, contact local dealer .
Battery defect .
Replace the battery with the same type of
battery .
Red LED is on and alarm is sounding
continuously .
UPS fault .
Contact local dealer directly .
TROUBLESHOOTING
If the UPS system does not operate correctly, use the table below to troubleshoot the problem .
Audible Alarms
Description
Buzzer Status
Battery Mode
Sounding every 4 seconds
Low Battery
Sounding every second
Overload
Sounding twice every second
Fault
Continuously sounding
Bypass Mode
Sounding every 10 seconds