1. FishBed

    Vaillant EcoTec Stops Firing Before Set Temperature

    Hi all, Preface; checked and can't find this exact issue on here, but similar to this one where someone suggested 'plate heat exchanger needs cleaned /replaced'. Unlike them, however, the boiler was looked at pretty recently. Setup: -Vaillant Ecofit Pure 825 -Radiators all bled and flow...
  2. B

    Vaillant Ecofit pure display radiator symbol on when central heating off

    We have an EcoFIT pure boiler and have not yet turned on our central heating at the main control but the display on our boiler shows the radiator and tap symbols on permanently. I've never paid much attention to the boiler display before so I'm not sure if it's always been like this, but from...
  3. D

    Mixing Controls

    Fairly complicated one this, but would appreciate any input if anyone has any thoughts. Currently, have a old, Baxi Boston boiler, with pumped CH, gravity Hot Water in our house. Works great, added a NEST to it that made it pretty easy to control and make the house warm when we want it. Like...