Recent content by MikeHippo

Sorry for my ignorance.... where is the 2 port ch valve and what should I check for? Thanks

I have a problem with a Vaillant ecoTEC plus 624. For the last week we've only had hot water when the heating is on. There are no fault codes - only status codes (S.4, S.6, s.8 and S.31). The tank is a MEGAflo, not sure of the model but can find out if it's important. In a previous post on...