6 | Trouble shooting |
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| Symptom | Cause | Remedy |
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| No LED display | Missing battery | Charge battery up to 4 hours |
| on the front panel |
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| Battery fault | Replace with the same type of | |
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| battery |
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| Power switch not pressed | Turn on the switch again |
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| Alarm buzzer | UPS overload | Verify that the load matches the |
| beeps |
| UPS capability as specified in |
| continuously |
| the specs |
| when AC supply |
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| is normal |
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| When power | UPS overload | Remove some |
| failure, |
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| Battery voltage is too low | Charge battery 4 hours or more | |
| time is short | ||
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| Battery fault due to high | Replace with the same type of | |
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| ||
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| temperature operational | battery |
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| environment, or improper |
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| treatment of battery |
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| Mains normal but | Fuse is blown | Replace with the same type of |
| LED is flashing |
| fuse |
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| Power cable is loose | Reconnect the power cable |
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| properly |
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| Communication | Software not properly | Check the settings of the |
| interrupted | installed | software |
| between USP and |
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| Cable not properly connected | Check if the | |
| computer |
| properly connected to COM1 / |
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| |
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| COM2 of the computer and |
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| reconfirm the settings once |
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| again. |
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If any abnormal situations occur that are not listed above, please call the service centre immediately.
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