Troubleshooting
Status and Alarm Messages
This section lists the status and alarm messages that the UPS might display. The messages are listed in alphabetical order, and a suggested corrective action is listed with each alarm message to help you troubleshoot problems.
Display messages
Display Message | Meaning | Corrective Action |
|
|
|
Automatic Self Test | The UPS has started | No corrective action is necessary. |
Started. | battery test. |
|
|
|
|
ABus Communication | Communication fault detected on the | Check ABus wiring. If this does not |
Fault. | ABus. | help contact APC. |
|
|
|
ABus Termination Fault. | ABus termination is missing. | Check if termination is present. If this |
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| does not help contact APC. |
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|
|
Batt Temperature | The temperature of one or more bat- | Contact APC Customer Support |
Exceeded Upper Limit. | tery units has exceeded the system | (see back cover). |
| specifications. |
|
|
|
|
Battery | The battery voltage is too high and | Contact APC Customer Support |
warning. | the charger has been deactivated. | (see back cover). |
|
|
|
Bypass Not Available | The frequency or voltage is out of | Correct the input voltage to provide |
Input Freq/Volt Out Of | acceptable range for bypass. This | an acceptable voltage or frequency. |
Range. | message occurs when the UPS is |
|
| online, and indicates that the bypass |
|
| mode may not be available if |
|
| required. |
|
|
|
|
Discharged Battery. | The UPS is in battery operation and | No corrective action is necessary. |
| the battery charge is low. | Shut down the system and the load |
| Note: Runtime is limited in duration. | equipment or restore incoming |
|
| voltage. |
|
|
|
Emergency PSU Fault. | The redundant Emergency Power | Contact APC Customer Support |
| Supply Unit (PSU) is not working. | (see back cover). |
| The UPS will continue to work nor- |
|
| mally, but the PSU should be |
|
| replaced. |
|
|
|
|
EPO Activated. | The Emergency Power Off switch has | Deactivate the Emergency Power Off |
| been activated. | switch. |
|
|
|
Fan fault. | A fan has failed. | Contact APC Customer Support (see |
|
| back cover). |
|
|
|
Int. Mech. Bypass | The internal mechanical switchgear is | No corrective action necessary. The |
Switch Closed. | closed. | UPS is in internal mechanical bypass |
|
| operation. |
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