Hello,
I have continued today my KNX configuration, all looks to works fine except the FAN and HVAC Control.
First, i show you my ETS group access :
- The yaml code
3.HVAC result
When the HVAC is active the full cercle to change the temperature disappear. I can alway change it by moving the invisible cercle.
- FAN result
With 3 step the 4 buttons looks good except the %speed return
1 → 2100% instead of 33%
2 → 4233% instead of 66%
3 → 8500% instead of 100%
With 5 step the buttons is replace by a slide and %speed return is bad too.
1 → 1020%
2 → 2040%
3 → 3060%
4 → 4080%
5 → 5100%
If someone know whats happens 
!