Hi,
I have a Alpha 240E combimax boiler. The boiler pressure remains very high (around 4) despite draining water out of the radiator. Pleases advise what to do.
the filler loop maybe letting past allowing more water into the system if possible get filler loop ends disconnected release excess pressure out through a rad bleed valve until about 1 to 1.5 bar pressure try it if pressure now climbs up boiler needs a look at by a professional
wirecutterman
December 2009
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