TROUBLESHOOTING
Alarm or Condition | Possible Cause | Action |
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Overtemperature | UPS internal temperature is too high |
| or the fan has failed. |
LED is on.
1 beep every second.
If you have an optional Maintenance Bypass Module or Power Distribution Module, turn the maintenance bypass switch to the SERVICE position. Otherwise, shut down the UPS.
Clear vents and remove any heat sources. Allow the UPS to cool. Ensure the airflow around the UPS is not restricted.
If the alarm disappears, turn the maintenance bypass switch back to the UPS position (or restart the UPS if you do not have a switch).
If the condition persists, contact your service representative.
Battery test failed | The batteries need service. | Contact your service representative. |
The UPS does not start. | The main utility breaker is off. | Verify that the main utility breaker is on. |
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| If an optional isolation transformer is | Verify that the isolation transformer input circuit |
| installed, the input circuit breaker is | breaker is on. |
| off. |
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| The remote emergency | Reset the REPO switch and restart the UPS. Verify |
| (REPO) switch is active or the REPO | that the REPO connector is present. |
| connector is missing. |
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Power is not available at The UPS is in Standby mode. the UPS output
receptacles.
Supply power to the connected equipment: Press any button on the front panel display to activate the
menu options. Press the |
| button on the front panel | |||||||||
display and then press the |
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| button to select the | ||||||||
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TURN UPS ON/OFF menu. Press the | button to | ||||||||||
select the System On option; press the |
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| button. | ||||||||
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Press and hold the |
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| button for three seconds, | ||||||||
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until the UPS stops beeping.
The UPS does not provide the expected backup time.
The batteries need charging or | Apply utility power for 48 hours to charge the |
service. | batteries. If the condition persists, contact your |
| service representative. |
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Battery circuit breakers are in the OFF | Switch all battery circuit breakers to the ON |
position. | position. |
56 | EATON Powerware® 9155 Parallel UPS |