Vaillant Ecotec Plus 831 Warmstart

23 Nov 2020
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United Kingdom
I have been trying to see if I can turn on the Warmstart function on my Ecotec 831 boiler. The manuals which I have been able to find online don't seem to line up with my boiler (shown in photos uploaded). Is anyone able to confirm if the boiler has the Warmstart functionality and if so how I would turn it on?


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Turn the top dial all the way to the right (clockwise) and turn it back to where it is now and a “C” will show on the display ,this is warmstart on .

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