Troubleshooting
7.0TROUBLESHOOTING
This section indicates various UPS symptoms a user may encounter and provides a troubleshooting guide in the event the UPS develops a problem. Use the following information to determine whether external factors caused the problem and how to remedy the situation.
7.1UPS Symptoms
The following symptoms indicate the Liebert GXT3 is malfunctioning:
•The relative indicators illuminate, indicating the UPS has detected a problem.
•An alarm buzzer sounds, alerting the user that the UPS requires attention.
7.1.1Indicators
In addition to the fault indicator being illuminated, one or more of LED segments of battery level indicator will also be illuminated to provide a diagnostic aid to the user, as shown in Figure 24. The descriptions are listed in Table 8.
Figure 24 Battery level indicator
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| A | B | C | D | E |
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Table 8 | Indicator descriptions |
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Indicator | Diagnosis/Audible alarm |
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A - E |
| On bypass from output overload | ||||||
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A |
| On bypass due to overtemperature condition | ||||||
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B |
| On bypass due to DC bus overvoltage | ||||||
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C |
| On bypass due to DC/DC power supply failure | ||||||
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D |
| On bypass due to PFC failure | ||||||
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E |
| On bypass due to inverter failure | ||||||
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A&B |
| UPS Failure (includes | ||||||
| charger failure) and continuous alarm |
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A&C |
| UPS failed battery test | ||||||
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A&E |
| Bypass feedback |
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B&E |
| Short circuit on the output |
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C&E |
| UPS shutdown by command from communication (USB port or Liebert IntelliSlot® port) (no | ||||||
| audible) |
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Utility LED flash |
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Battery Indicator | Internal battery not connected (continuous horn); check battery connection, power down and | |||||||
Flashing |
| restart UPS |
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Bypass Indicator | Mains power voltage or frequency is out of tolerance; bypass is unavailable | |||||||
Flashing |
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A - E indicators are shown in Figure 24.
If the UPS experiences an overload, the UPS will transfer from bypass back to inverter approximately 5 minutes after the overload ends.
29 | Liebert® GXT3™ |