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hi there, thanks for the advice, it started to drop from the red area on the dial and was sitting at the top end of the grey are as the evening went on. I'll just have to keep an eye on it.... Thank again.

Hi all, I'm in need of some advice please. I have a vaillant ecoTEC plus 637 and the radiators in the top floor were too cold so yesterday I checked the pressure gauge on the boiler which was showing it was too low and the digital display was flashing. I refilled to get the gauge to the...