Table 16. Typical Alarms and Conditions (continued)
Alarm or Condition | Possible Cause | Action |
Inverter Fault
(Alarm 31)
Continuous Alarm
The UPS has detected a fault in Contact your service representative. the inverter circuit while
attempting a recovery from Bypass mode or Converter mode.
Heatsink Over Temperature | The UPS has detected that one | The UPS transfers to Bypass mode if available. | |
(Alarm 73) | of its heat sinks has exceeded | If the bypass is not available or the UPS is in | |
the maximum defined | |||
Continuous Alarm | power on or standby mode, the UPS transfers | ||
operating temperature. Possible | |||
to fault mode. | |||
| |||
| fan failure. | ||
| Ensure that the fans are spinning and that the | ||
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| ||
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| air intake vents on the UPS are not blocked. | |
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| Once the maximum temperature is reached, | |
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| the UPS shuts down. | |
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|
| |
Fatal EEPROM Fault | There is EEPROM data | Contact your service representative. | |
(Alarm 53) | corruption due to a failed |
| |
device or incorrect flash |
| ||
Continuous Alarm |
| ||
upgrade. |
| ||
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| ||
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| |
Output Short Circuit | The UPS has detected an | If the UPS is in Normal mode, the UPS | |
(Alarm 58) | abnormally low impedance | transfers to Bypass mode if available, | |
placed on its output and | otherwise, the UPS shuts down after three to | ||
Continuous Alarm | |||
considers it a short circuit. | five line cycles. | ||
| |||
|
| If the UPS is in Battery mode, the UPS shuts | |
|
| down after three to five line cycles. |
Fan Failure
(Alarm 193)
Continuous Alarm
The UPS has detected that one or more fans are not functioning properly.
This is an alarm only. Contact your service representative immediately and remove the load.
Silencing the Alarm
Press any button on the control panel to silence the alarm. Check the alarm condition and perform the applicable action to resolve the condition. If any new alarm becomes active, the audible alarm resumes, overriding the previously silenced alarm.