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| Chapter 10 | Service after Sales |
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| No.1 |
| Fault description |
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| Reason |
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| Actions to be taken |
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| The battery life is reduced due to |
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| aging, which may endanger the |
| Notify the service dept for replacing the | ||||||||||
| 16 |
| Battery needs to be |
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| normal operation of UPS. Warn |
| battery and set the battery model and | |||||||||||
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| replaced |
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| the user that the battery is |
| parameters through software. |
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| abnormal and needs to be |
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| replaced. |
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| 17 |
| No battery |
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| Batteries are not connected. | Check | the | battery and | the | wiring | of | |||||||
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| batteries |
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| The battery discharges to pre- |
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| 18 |
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| alarm point(the battery capacity |
| Shut down the load in time |
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| battery discharging |
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| is inadequate),the system may |
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| shut down after a few minutes |
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| 19 |
| battery over temperature | battery temperature is too high |
| Check | the | battery | temperature | and | |||||||||
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| ventilation |
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| 20 |
| battery |
| The battery condition for |
| Start the self test after the conditions | ||||||||||||
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| is not satisfied |
| can meet the requirements |
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| 21 |
| Battery is connected |
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| Battery is connected reverse |
| Notify | the | UPS service | engineer | to | |||||||
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| reverse |
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| connect the battery again |
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| 22 |
| Bypass | phase rotation is |
| Bypass phase rotation is reverse | Notify | the | UPS service | engineer | to | ||||||||
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| reverse |
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| change the bypass phase rotation |
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| 23 |
| Rectifier | heatsink | over |
| Rectifier | heatsink temperature is |
| The UPS | can | recover | automatically. | ||||||
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| temperature |
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| too high |
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| Check the environment and ventilation | ||||||||||
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| 24 |
| Rectifier fan fails |
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| Rectifier fan is abnormal |
| Replace the fan in time and the UPS | |||||||||||
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| can recover automatically |
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| Inverter | is | asynchronous with |
| Check if the bypass is normal. The fault | ||||||||
| 25 |
| Inverter asynchronous |
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| alarm | stops automatically | after |
| the | ||||||||
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| bypass |
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| bypass recovers normal |
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| 26 |
| Inverter | heatsink | over |
| Inverter | heatsink temperature is |
| The UPS | can | recover | automatically. | ||||||
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| temperature |
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| too high |
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| Check the environment and ventilation | ||||||||||
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| 27 |
| Inverter fan fails |
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| Inverter fan is abnormal |
| Replace the fan in time and the UPS | |||||||||||
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| can recover automatically |
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| The IGBT of inverter has over |
| Restart the inverter, if the fault can’t be | ||||||||||
| 28 |
| Inverter over current |
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| current resulting in the shut down |
| cleared, notify the service dept for | |||||||||||
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| if inverter. |
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| repairing. |
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| Check whether there is fault in rectifier | ||||||||
| 29 |
| Shutdown due to low bus |
| DC bus voltage is too low result in |
| side, | if no, | then | check whether | |||||||||
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| voltage |
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| the shutdown of inverter |
| overload occurs. Restart after clearing | |||||||||||
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| the fault. |
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| 30 |
| Output | transformer | over |
| Output transformer temperature is |
| Auto recovery, ambient and ventilation | ||||||||||
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| temperature |
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| too high |
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| of UPS should be checked. |
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| 31 |
| Overload of single UPS | Load is too heavy |
| Disconnect | unnecessary | load | and | ||||||||||
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| ensure the safety. |
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| 32 |
| Overload of system |
| System load is too heavy |
| Disconnect | unnecessary | load | and | |||||||||
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| ensure the safety. |
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| 33 |
| Overload exceeds normal |
| Over load | occurs in inverter |
| If the load decreases after 5 minutes, | |||||||||||
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| time |
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| mode, transfers to bypass mode |
| the system will back to inverter mode | |||||||||||
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