Troubleshooting 56
• Rectifier input over current
• Inverter output over current
• Inverter fault
• Heat sink over temperature
Action:
1. If power management software is being used, check the log files to obtain specific error information
to help identify the problem.
For more information about the causes of a general fault condition, see the HPE Power Manager
user guide available for download from the Hewlett Packard Enterprise website
(http://www.hpe.com/info/rackandpower).
2. Verify that no blockage of airflow to the front bezel and rear panel exists.
General alarm condition
Action:
1. If power management software is being used, check the log files to obtain specific error information
to help identify the problem.
For more information about the causes of a general alarm condition, see the HPE Power Manager
user guide available for download from the Hewlett Packard Enterprise website
(http://www.hpe.com/info/rackandpower).
2. Check the batteries:
a. Allow the UPS batteries to charge for 24 hours.
b. If the Battery Fault LED illuminates, replace the batteries ("UPS battery replacement procedure" on
page 47).
3. Reduce the load:
a. Power down the UPS ("Powering down the UPS" on page 44).
b. Remove one or more load devices to reduce the power requirements.
c. Wait at least 5 seconds and restart the UPS.
d. If the condition persists, verify that the load devices are not defective.
4. Allow the UPS to cool:
a. Power down the UPS ("Powering down the UPS" on page 44).
b. Clear vents and remove any heat sources.
c. Verify that the airflow around the UPS is not restricted.
5. Wait at least 5 minutes and restart the UPS.
6. If the condition persists, contact a Hewlett Packard Enterprise authorized service representative.
Bypass is out of range
The input voltage is not within ±12 percent of nominal voltage.
The UPS is receiving utility power that might be unstable or in brownout conditions. The UPS continues to
supply power to the connected equipment. If conditions worsen, the UPS might switch to battery power.
Bypass out of range is only a status and does not keep the UPS from transferring to Auto-Bypass mode
(on page 41).
Action:
1. Check the input voltage and reconfigure the UPS ("Configuring the UPS" on page 42).