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    Vaillant VRC 430f cycling issues - a solution?

    I agree it may not be quite so good, but it looks much better and actually only suffers a little lag in true readings. Even so, the whole modulating/thermostat issue is unclear. And why does the system cut out (for ~15 mins) when it should still be in heat mode (temperature not reached on...
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    Vaillant VRC 430f cycling issues - a solution?

    I am having the same issues. I have wall mounted VRC430 (actually sunk mine into the wall) and EcoTECH plus 831 combi and the manual is rubbish. I am doing up my house and have had this combination for about 1 year (last winter I could not seem to get enough heat out of it when it was -6...
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