I am having exactly the same problem as Arne with 2.5.0 (stable release version) after upgrading from 2.4.0 today. Did you find any solution to your problem in 2.5? My Vallox is a 350MV.
I am having exactly the same problem as Arne with 2.5.0 (stable release version) after upgrading from 2.4.0 today. Did you find any solution to your problem in 2.5? My Vallox is a 350MV.