Vallaint boiler turning off comfort (pre-heat)
We have a Vaillant eco tec 831 plus. Read on internet that if you turn the hot water dial to minimum then back again it deactivates the 'C' pre heat. However turning it does nothing. Our tado is connected to the Vaillant by ebus. Therefore i am thinking Tado has control of 'C' mode and i can't deactivate it manually. how do i get it turned off please?
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