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Troubleshooting 49

1. Check the input voltage and reconfigure the UPS ("Configuring the UPS" on page 32).

2. Contact a qualified electrician to verify that the utility power is suitable for the UPS.

UPS is in Auto-Bypass mode

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 HP Power Manager user

guide available for download from the HP website (http://www.hp.com/go/rackandpower).

2. Verify that no blockage of airflow to the front bezel and rear panel exists.

UPS is on battery

Action: Save files and shut down connected equipment.

UPS is on bypass

Possible Cause: The UPS is in Auto-Bypass mode (on page 31).

Action:

The equipment transferred to bypass utility power. Battery mode is not available and the equipment is not

protected; however, the utility power continues to be passively filtered by the UPS.

Check for one of the following alarms:

• Overload

• Over temperature

• Output short

• Hardware failure

Utility power condition

The utility input voltage is outside the operating range.

Action:

1. Check the input voltage and reconfigure the UPS ("Configuring the UPS" on page 32).

2. Contact a qualified electrician to verify that the utility power is suitable for the UPS.

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