After installing armbian bookworm the fans are always at maximum. Here is how I solved.
Trying to figure out what is not working I try to run the related service
systemctl start fancontrol.service
but it does not start. So I check the latest errors:
systemctl status fancontrol.service
I obtain
Failed ...fancontrol.service: Failed to locate executable /usr/sbin/fancontrol
so, fancontrol is simply not there and apt can't find it for installation.
I took the old sd card and copied the fancontrol to /usr/sbin/
Than make it executable with:
chmod +x /usr/sbin/fancontrol
than
systemctl start fancontrol.service
systemctl enable fancontrol.service
As soon as I started the service, voilà, the fan started to... blowing only when needed: problem solved!
Attached you find the fancontrol file.
fancontrol