ecotec 835

  1. J

    Ambisense and boiler cycling

    Hi, I have a Vaillant Ecotec Exclusive with Green IQ 835, VRC700, weather composition, VR920, Ambisense VR50 and V51. I followed the advice of different posts, especially https://www.diynot.com/diy/threads/vaillant-system-gremlins.541433/ However, I still have several problems...
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