I was referring to the service, the daemon that runs on startup once to set it all up.
The way it normally goes is you do the clone and initial install as folows.
git clone https://github.com/pimoroni/fanshim-python
Then you change directories again to install the service
sudo ./install-service.sh --on-threshold 55 --off-threshold 40 --delay 2
If you don’t want the led etc its
sudo ./install-service.sh --on-threshold 55 --off-threshold 40 --delay 2 --nobutton --noled
Any time I want to change it after the fact I do the following before running install service again
sudo systemctl stop pimoroni-fanshim.service
Then run the sudo install service with my new values. I don’t think you have to stop it first but I do it anyway.