Avago Technologies 3ware 9650SE-12ML (Channel) - Manual (Page 318)

Troubleshooting
306 3ware SAS/SATA RAID Software User Guide, Version 9.5.1
Action
The temperature sensor should be replaced or repaired. This may require
specialized skills. Contact your enclosure manufacturer for more information.
8026 Enclosure temp added
Event Type
Information.
Cause
Applies only to the 9690SA controller.
A temperature sensor has been added to the enclosure or an existing sensor
has been plugged in. This error message can occur due to a poor connection.
Action
If due to a poor connection, the repair will require specialized skills. Contact
your enclosure manufacturer for more information.
8027 Enclosure temp critical
Event Type
Error.
Cause
Applies only to the 9690SA controller.
The temperature in the enclosure is dangerously out of the recommended
operating range.
Action
Take immediate steps to correct the temperature problem.
Take steps to lower the enclosure temperature, such as adding fans, clearing
enclosure openings of blockages, and increased ventilation of the operating
environment
Continued operation of the enclosure at high temperatures may lead to data
loss and operational failure.
See your enclosure documentation or contact your enclosure manufacturer to
make sure you are following proper operating procedures.