Avago Technologies 3ware 9650SE-12ML (Channel) - Manual (Page 305)

Error and Notification Messages
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004B Battery temperature is high
Event Type
Error
Cause
The battery pack temperature being monitored by the Battery Backup Unit
has risen above the acceptable range. However, the BBU is still able to
backup the 3ware RAID controller.
Action
Check for sufficient airflow around the card. To increase airflow you can:
• Leave the PCI slots next to the controller empty
• Add fans to your computer case
• Move and bundle wiring that is blocking air circulation
The Battery Backup Unit is presently still able to backup the 3ware RAID
controller, but you should replace the battery pack if the temperature warning
persists.
Contact 3ware technical support at http://www.3ware.com/support/index.asp
if this problem is not due to environmental reasons or improper case cooling.
004C Battery temperature is too low
Event Type
Error
Cause
The battery pack temperature being monitored by the Battery Backup Unit is
too low.
The BBU is unable to backup the 3ware RAID controller.
Action
Contact 3ware technical support at http://www.3ware.com/support/index.asp .
The battery pack must be replaced if the problem persists and is not due to
environmental reasons.