There might be a driver for a fan controller on the board that you
can use to control them. Try the lm-sensors package to see what it can
discover.
It shows just temps. I assume there are other sensors there, but
lm-sensors doesn't say the right spell to use them. I ran "sudo
sensors-detect" and answered y to every question, ran "sudo
/etc/init.d/kmod start", and still same. I can show you the complete
output if you want.
If I did manage to get lm-sensors to show the fans, how would I use it
to modify their behavior?