10.Troubleshooting
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PROBLEM | POSSIBLE CAUSE | ACTION TO TAKE | |
UPS not on | On/off/test/silence |
| Press the on/off/test/silence |
LED not light | button not pushed | or | button more than 1 second |
| push too short |
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| Battery voltage less | than | Recharge the ups at least 4 hours |
| 10V |
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| PCB failure |
| Replace the PCB, call for service |
| Load less than 20W at | Normal condition | |
| battery mode |
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|
UPS always at | Power cord lose |
| Replug the power cord |
battery mode | AC FUSE burn out |
| Replace the AC fuse |
| Line voltage too high, too | Normal condition | |
| low or black out |
|
|
| PCB failure |
| Replace PCB, call for service |
Back up time | battery not fully charged | Recharge the UPS at least 4 hours | |
too short | PCB failure |
| Replace PCB, call for service |
Buzzer | Overload |
| Remove the noncritical loads |
continuous |
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beeping |
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RED LED light | Battery failure |
| Replace battery, call for service |
