I have had the boiler for 3 years, has worked fine even in winter with cold feed. Boiler is Vaillant turbo max pro combi 28e. Noticed water wasn't getting to max temp anymore always had dial on max. Heating is still fine. I have a pretty good understanding of boilers etc just wondered if sensor is holding it off. or if anyone has any idea of what might be going on.
Thanks
Harvey
Thanks
Harvey