MMycraft 2019-12-28 11:43:31#2The solution has already been mentioned, dirt, lime, etc. in the [Entlüfter].
Hhegi___ 2019-12-28 11:54:02#3Simply unscrew and make it passable or put a plug on it. There is a screw connection under the valve. You can probably also remove the black cover.
Simply unscrew and make it passable or put a plug on it. There is a screw connection under the valve. You can probably also remove the black cover.