All is working, no warning lights, radiators all bled, BUT. The water pressure dial is between 1 and 2 as it should be, but when CH is switched on it goes right up to 3, bordering on the red line. If I take a cupful out of the system it reverts to being o.k. Then when I turn CH off it goes below 1 and I have to top the system up again. Driving me mad. Any ideas please?
CH boiler problem
Sep 26, 2010
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