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    Vaillant VRC 430

    Sorry, I meant to update the older thread with the results of tweaking but hadn't got round to it yet. I will post my experience here instead: Having tweaked all sorts of settings on the boiler, including range rating right down to minimum. Also increasing the flow in the system to...
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    Vaillant VRC 430

    Hi, I have recently had a Vaillant VRC 430 + ecoTec Plus 428 installed and all seems to be working OK except for one problem. The VRC 430 flow temperature demand is changing to 0 degC for periods of around 10 minutes when the radiators should be heating up. Obviously this delays the...
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    Vaillant ecoTec Plus 428 + VRC 430 Problem

    Firstly apologies for the long 1st post! I have recently had an ecoTec Plus 428 installed with the VRC 430 weather compensator. I am having problems with the boiler constantly going into anti-cycling mode and not maintaining the required target flow temperature for more than a few seconds...
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