5 Maintenance and Troubleshooting
N1C L-Series(1-3kVA) UPS
User Manual
38
Fault symbol
Buzzer status
Meaning
BAT
Long beep
Battery fault, battery voltage too low or too high
protection.
FAN
Rapid beep (Alarm
once about every 0.2s)
Fan fault alarm prompting, the inverting output is
going to protect. Please check if cooling fan
damage.
Load energy bars all
flicker
Rapid beep (Alarm
once about every 0.2s)
Output overload alarm. the output is going to
close, please reduce load.
Battery energy bar all
flicker
Slow beep (Alarm
once about every 2.0s)
Battery voltage is too high. Please check if battery
or charger failure.
Battery energy bars are
all off and the frame
flickers
Rapid beep (Alarm
once about every 0.2s)
Battery is about to run out. Please pay attention to
protect device and save you data in the PC.