| Symptom |
Possible Cause |
What to do |
| UPS can not turn on and there is no alarm |
UPS rear panel main switch in off position Fuse open
No incoming utility line or abnormal input frequency
|
Turn on switch Replace fuse Check input power and wall socket |
| UPS can not turn on and alarm sounds continuously |
Too low or high input frequency Too low or high input line voltage
| Test input frequency Check input line voltage
|
| Battery mode light is on when incoming line is thought to be normal |
No incoming line, very low or very high line voltage Fuse open or circuit protector tripped |
Check wall socket and test input line voltage Replace fuse or reset circuit protector |
| Fault light is on and alarm sounds continuously |
UPS failure |
Call for service |
| Backup time is less than rated |
Battery is not fully charged
Dead battery charger failure |
Recharge the battery for at least 6 hours. Re-test the backup time. If problem remains, call for service. |
| Battery Mode and Battery Low/Weak lights are on and alarm sounds periodically |
UPS is in battery mode when input line fails
Battery is near end of discharge |
Check input power and wall socket |
| Overload light is on
and alarm sounds continuously |
>Weak battery |
Recharge battery for
4 hours and press the test button again, if the light keeps on flashing, call for service. |
Language: ENG ESP 
