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Mend Pressure Boiler Keeps Dropping

pressure on my boiler keeps dropping?

why does my glowworm ultracom 24cxi pressure keep dropping? no leaks, just wondered about the thermastate, is it set too low? thanks.

jane, barnsley
February 2009
This could be the expansion vessel leaking air ( system not balanced ) or maybe the pressure relief valve is faulty ! most water leaks only need a very small amount to yield pressure failure.
Hope this helps

Kev
February 2009
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