@Mikko_Jokinen, @Giedrius and @AlexF: for info if it can help, i still use openhab 2.2.0 with the new version 2.4 of the snapshot and it works like a charm on my raspberry pi, the Nibe is an F1145.
Another info, sometimes things in openhab resolve miraculously after applying the procedure advertised in this post: . I have not had to use it in my case when switching from 2.3.0 snapshot but you never know… it has solved many other problems for me in the past, especially after i had awkward symptoms similar to what you have described.
