Argon one fan speed tool functionality

Systen info : Linux Debian bullseye aarch64 GNU/Linux
I applied argonone-config command settings
/etc/argononed.conf

#
# Argon One Fan Speed Configuration
#
# Min Temp=Fan Speed
55=10
60=20
65=80

Then reboot raspberry. The fan keeps working. Loud.
Is 55 degrees means that it won’t be working at the lower level?

vcgencmd measure_temp - 40.9
Then change Min Temp to 40 with custom options
/etc/argononed.conf

#
# Argon One Fan Speed Configuration
#
# Min Temp=Fan Speed
40=0
60=20
65=80

The fan keeps working. Still loud. Is zero level available?
After all, when I installed the tool I could not have seen tool icon on desktop.

I would turn the fan off at all

Setting the percentage to zero will cause the fan to run at 25%.

Remove the 40=0 line

25% is too loud!!! Is it possible to stop fan at all?

Yes, remove the 40=0 line, as above. The default, in the absence of having passed a trigger point, is off. If you remove 40=0 from your configuration, with no other changes, the fan will remain off until 60 degrees and turn off again when it’s below 60 degrees.

After removing the line you may have to restart the services (or simply reboot)

ОК. Set to

#
# Argon One Fan Speed Configuration
#
# Min Temp=Fan Speed
55=10
60=10
65=80

then sudo systemctl restart argononed.service
The fan keeps working, not going to stop. Loud!!
vcgencmd measure_temp - 43.8
The first example in my post described the same misworking.

The problem was that the case uses some of GPIO pins. I have a Zigbee adapter inserted to GPIO head that made conflicts. I will have to sell Zigbee adapter and bye a Zigbee USB stick.