Troubleshooting
Alarm or Condition | Possible Cause | Action | |
Overload | Power requirements exceed the | Remove some of the equipment from the UPS. | |
| UPS capacity (greater than 100% of | The UPS continues to operate, but may switch | |
| nominal; see page 87 for specific | to Bypass Mode if the load increases. The | |
LED is on. | output overload ranges). | alarm resets when the condition becomes | |
| inactive. | ||
1 beep every second. |
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Overtemperature | UPS internal temperature is too | If you have an optional Maintenance Bypass | |
| high or the fan has failed. | Module or Power Distribution Module, turn | |
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| the Maintenance Bypass switch to the SERVICE | |
LED is on. |
| position. Otherwise, shut down the UPS. | |
| Clear vents and remove any heat sources. | ||
1 beep every second. |
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| Allow the UPS to cool. Ensure the airflow | ||
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| around the UPS is not restricted. | |
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| If the alarm disappears, turn the Maintenance | |
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| Bypass switch back to the UPS position (or | |
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| restart the UPS if you do not have a switch). | |
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| If the condition persists, contact your service | |
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| representative. | |
Battery test failed | The batteries need service. | Contact your service representative. | |
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The UPS does not | The main utility breaker is off. | Verify that the main utility breaker is on. | |
start. |
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If an optional isolation transformer | Verify that the isolation transformer input | ||
| |||
| is installed, the input circuit | circuit breaker is on. | |
| breaker is off. |
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| The Remote Emergency | Reset the REPO switch and restart the UPS. | |
| switch is active or the REPO | Verify that the REPO connector is present. | |
| connector is missing. |
|
Power is not available The UPS is in Standby mode. at 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 
button to select the TURN UPS ON/OFF menu. Select the ON option. Press and
hold the 
button for three seconds, 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 | Switch all battery circuit breakers to the ON |
OFF position. | position. |
92 | Powerware® 9155 UPS |