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Combi boiler wont re-pressurize when i turn the little valve under boiler it just seems to run and run and the pressure gauge dosent go up at all? there are no leeks. but a minute a go it went right up to the red and wouldnt close then shut off,it restarted fine now it wont go up at all?

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The little valve is a one way type. this means the pressure should only flow one way. it's a good chance that the valve body is allowing the pressure to back flow. i would replace that valve. this should take care of it. please rate this thanks

Posted on Sep 02, 2008

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