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Mend Ariston Pro One Boiler Pressure

pressure too high ?

my ariston boiler goes too 3 bar from 1 bar idle

rj
December 2008
either the filling loop is passing or the heat exchanger is split, also look at the expansion vessel check it is pressurised.

richofix
January 2009
expansion vessel is either depleted of air or its hole'd...drain boiler check air charge in vessel with foot pump (should be round 1 bar) if its empty then pump to 1 bar

mark the gay boiler man
December 2008

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