AMCC 3WARE 720-0138-00 - Manual (Page 137)

Error and Notification Messages
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the 3ware RAID controller. This indicates that the Battery Backup Unit must
be replaced.
0049 Battery temperature is normal
The Battery Backup Unit measures and evaluates the battery pack
temperature on a continuous basis. If the temperature falls outside the
acceptable range then comes back within the acceptable range, this message
will be posted to the host.
004A Battery temperature is low
The Battery Backup Unit measures and evaluates the battery pack
temperature on a continuous basis. If the temperature is below a warning
threshold, this message will be posted. When this event happens, the Battery
Backup Unit is still able to backup the 3ware RAID controller but you should
replace the battery pack.
004B Battery temperature is high
The Battery Backup Unit measures and evaluates the battery pack
temperature on a continuous basis. If the temperature is above a warning
threshold, this message will be posted. You should check that there is enough
airflow around the Battery Backup Unit. When this event happens, the Battery
Backup Unit is still able to backup the 3ware RAID controller but you should
replace the battery pack if the temperature warning persists.
004C Battery temperature is too low
The Battery Backup Unit measures and evaluates the battery pack
temperature on a continuous basis. If the temperature is too low to operate,
this message will be posted. When this event happens, the Battery Backup
Unit becomes not ready and is unable to backup the 3ware RAID controller.
You must replace the battery pack.
004D Battery temperature is too high
The Battery Backup Unit measures and evaluates the battery pack
temperature on a continuous basis. If the temperature is too high to operate,
this message will be posted. You should check that there is enough airflow
around the Battery Backup Unit. When this event happens, the Battery
Backup Unit becomes not ready and is unable to backup the 3ware RAID
controller. You must replace the battery pack if the temperature error persists.
The use of a PCI card in the slot adjacent to the BBU is not recommended and
may result in the battery temperature being exceeded.