Troubleshooting
Problem Possible
Cause
Remedy
Battery discharged
Charge battery for 8
hours or more.
Battery defect
Battery replacement.
No LED display
Power switch is not
pressed
Press and hold power
switch.
AC Input is missing
Check AC input
connection.
Mains normal but
works in inverter
mode
Input protector is
effective
Reset the input
protector.
Alarm buzzer beeps
continuously
Overload
Verify that the load
matches the capability
specified in the specs.
Overload
Remove some
non-critical load.
Back up time is
shorten
Battery voltage is too low. Charge battery for 8
hours or more.
If any abnormal situations occur that are not listed above, please call service
technician immediately.
