Cisco 159330 User's Guide download pdf (Page 73)

CHAPTER

5-1

Cisco AC/DC Power System User Guide, R1.0

May 2006

System Troubleshooting

This chapter contains information about troubleshooting and should be consulted in the event of a system

malfunction.

The following is a list of potential problems and resolutions. If the first recommendation does not solve

the problem, continue on to the next. If further assistance is needed, see the “Obtaining Technical

Assistance” section on page xiv.

Warning

Only trained and qualified personnel should be allowed to install, replace, or service this equipment.

Statement 1030

Note Most alarms will clear automatically when the cause has been cleared. Some alarms can be cancelled via

the front panel push-buttons. In this case it will be indicated in the trouble shooting instructions.

Error Message Low System Voltage (Red light on controller, Relay #1)

Explanation

Rectifier failure

2. Loss of AC power on some or all rectifiers

3. Load exceeds rectifier capacity

Recommended Action

Replace faulty rectifier

2. Add one or more rectifiers to the system

Error Message Mains Error (Yellow light on controller, Relay #2)

Explanation

AC supply off on two or more rectifiers

Recommended Action

Verify that the AC supply is available at the correct voltage

2. Verify that the AC input breaker is in the ON position

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Cisco 159330 User's Guide Page 73