Table 16. Typical Alarms and Conditions (continued)
Alarm or Condition | Possible Cause | Action |
Shutdown Imminent
(Alarm 55)
Continuous Alarm
Communication to external devices stops because the UPS has entered a state where it may abruptly stop operating without further notice unless utility returns.
The alarm is issued when the battery time remaining reaches zero. All connected devices should have already shut down gracefully.
Battery Test Failed | A weak battery string was | This is a warning notice. Dell recommends | ||
(Alarm 191) | detected during the last battery | that you replace the batteries soon. |
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test. |
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Intermittent Alarm |
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Service Battery | A faulted battery string has | Contact your service representative. |
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(Alarm 149) | been detected and as a result, |
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the charger is disabled. |
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Continuous Alarm |
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Utility Not Present | Utility level has fallen below the | Transfer to battery if supporting load. Power | ||
(Alarm 59) | Utility Not Present threshold | down if not supporting load. |
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(typically <25 to 50V). |
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Intermittent Alarm |
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Bypass Not Available | Utility is outside of the bypass | Check the bypass settings. See “Settings” on | ||
(Alarm 105) | limits defined in the UPS. | page 41. |
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Input AC Over Voltage | Utility voltage exceeds the | The UPS transfers to Battery mode if |
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(Alarm 6) | maximum operating range. | supporting load. |
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Intermittent Alarm |
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Input AC Under Voltage | Utility voltage is below the | The UPS transfers to Battery mode if |
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(Alarm 7) | minimum operating range. | supporting load. |
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Intermittent Alarm |
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Input Under/Over Frequency | The utility frequency is out of | The UPS transfers to Battery mode if |
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(Alarm 8) | usable frequency range. | supporting load. |
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Intermittent Alarm |
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Site Wiring Problem | An alarm triggers when the | Have a qualified electrician correct the wiring | ||
(Alarm 194) | difference between ground and | problem. If the UPS is not wired with a neutral | ||
neutral voltage is >15V. | wire, Site Fault should be disabled in the | |||
Continuous Alarm | ||||
| Settings menu (see page 41). |
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Remote Emergency Power | The external contacts in the | The UPS | ||
Off | rear of the UPS are configured | Standby mode. See “Installing Remote |
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(Alarm 12) | for REPO operation and they | Emergency | ||
have been activated. | information. |
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Continuous Alarm |
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| Troubleshooting | 69 | |