Troubleshooting
Table
LCD Display | Possible Cause | Suggested Action |
xAlarms
On Manual Bypass
The UPS has been manually switched into Maintenance Bypass mode. The UPS can no longer protect the load or condition the utility to the load.
This is a normal operation.
x Alarms | The UPS detects that its output voltage | Contact Technical Support for | |
| is higher than its configured operational | assistance. | |
Output AC Over | |||
range. The UPS will immediately |
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Voltage |
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initiate a transfer to Bypass mode, if |
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| that mode is available. If Bypass mode |
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| is not available at the time of this |
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| failure, the UPS will shut down |
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| immediately to protect the load. |
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| This could be caused by a hardware |
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| component failure. |
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x Alarms | This alarm is triggered by one of the | Contact Technical Support for | |
| following events: | assistance. | |
Output AC Under | |||
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Voltage | • The UPS detects that its output |
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| voltage is lower than its configured |
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| operational range. The UPS will |
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| immediately initiate a transfer to |
| |
| Bypass mode, if that mode is |
| |
| available. |
| |
| • A significant change in load or load |
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| types occurs that causes a |
| |
| temporary sag in output voltage. If |
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| Bypass mode is available, the UPS |
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| attempts to automatically recover |
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| and return to an online mode after |
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| a couple of seconds. |
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| If Bypass mode is not available at |
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| the time of the failure, the UPS will |
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| shut down immediately to protect |
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| the load. |
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x Alarms | The current load exceeds 100% of the | Reduce the load level to clear the | |
| maximum capacity available that this | alarm. If the alarm persists after load | |
Output Overload | |||
UPS will support in Nonredundant | reduction, see the LCD panel to | ||
| |||
| mode. The UPS issues an alarm, but | determine which electronics module is | |
| does not take any other action for this | reporting overload. | |
| level of overload. | Contact Technical Support for | |
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| assistance. | |
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xAlarms
Program
Checksum Fail
The UPS detects that the Module Flash Program Space is corrupt. This is usually caused by a Flash Upgrade Failure.
This only occurs during product upgrade.
continued
HP Uninterruptible Power System R12000 XR Models User Guide |