ComfoAir: Switching to "Level A" not working

I am using Comfoair binding and realized a few days ago that there is an extended binding and it also comes through the official release channel. I am on 2.5.0 M2 now.

The binding works but there is no possibility to switch to Level A. I tried to add “level A” to the sitemap but it is not working correctly. In an older release with less supported commands the switch to “Level A” worked.

The comfoAirFanLevel is set to 0 but the binding does the following:
2019-09-02 21:03:38.587 [vent.ItemStateChangedEvent] - comfoairFanLevel changed from 2 to 1
2019-09-02 21:03:41.807 [vent.ItemStateChangedEvent] - comfoairIncomingFan changed from 40 to 90
2019-09-02 21:03:41.812 [vent.ItemStateChangedEvent] - comfoairOutgoingFan changed from 35 to 15

I also tried to modify the rules file but could not figure it out.

Can you help me with this?

Thanks and regards