subsystem failure

aix 4.3
I get the following error from the errpt log

BD797922 0306170008 P H enclosure0 SUBSYSTEM FAILURE

I'm not clear on this kind of error. It never happened to me.
What do this errors mean, and how do I clear or solve them?

Any help is appreciated.

you need to look into the detailed errpt output. It is a permanent (P) hardware (H) error. To identify the failing part, check errpt with the -a option an compare to the 7133 Reference Guide. Or, in case of a failing power supply or a fan just look at the enclosure lights.

thank you very much!
we've just called the service because it was a fan failure