Troubleshooting
Table
LCD Display | Possible Cause | Suggested Action | |
x Alarms | At least one battery string fails to reach | At least one battery module needs | |
| float voltage after charging for 24 | replacing. Contact Technical Support | |
Battery Not | |||
hours. This could indicate a problem in | for assistance. | ||
Charged | |||
one or more battery modules. |
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x Alarms | The UPS detects a manual battery test | At least one battery module needs | |
| failure. A manual battery test failure is | replacing. Contact Technical Support | |
Battery n Test | |||
reported when battery voltage is less | for assistance. | ||
Failed | |||
than 1.8 volts per cell during the |
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| first 75 seconds of unscheduled Battery |
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| mode operation. |
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| The variable n indicates the slot in |
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| which the faulted battery module is |
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| installed. (For example, slot 1 is the |
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| uppermost bay of the |
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| slots.) |
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x Alarms | Bypass mode is currently unavailable | Refer to the section, “Matching the | |
| due to the voltage or frequency being | Utility Voltage,” in Chapter 3 to verify | |
Bypass Not | |||
outside the valid operating range for | that voltage settings are correct. | ||
Available | |||
the UPS. | If the condition persists, contact an | ||
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| electrician. | |
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x Alarms | The UPS triggers this alarm when the | The autocalibration process | |
| autocalibration process fails to | reschedules and automatically restarts | |
Calibration Failed | |||
complete successfully. This could be | once the UPS conditions are conducive | ||
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| the result of an interruption from an | for the operation to complete. | |
| operating mode transition or because | Contact Technical Support for | |
| of UPS load changes occurring while | ||
| assistance. | ||
| autocalibration was in progress. | ||
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x Alarms | At least one electronics module detects | Contact Technical Support for | |
| abnormally high rail voltage levels and | assistance. | |
DC Link Over | |||
shuts down to protect itself and the |
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Voltage |
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load from damage. |
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| This could be caused by a hardware |
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| failure. |
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x Alarms | At least one electronics module detects | Check the fans for blockage. If a fan is | |
| that one or both of its cooling fans has | blocked, remove the blockage, switch | |
Fan Failure | |||
failed. The detecting module | to Maintenance Bypass mode, and | ||
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| immediately shuts down to protect its | restart the system. | |
| heat sensitive components. | If a fan is not blocked and the problem | |
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| persists, contact Technical Support for | |
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| assistance. | |
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| continued |
HP Uninterruptible Power System R12000 XR Models User Guide |