My baxi boiler keeps going up tp 3.5 bar pressure when i put the heating on even though the pressure is only at 1 bar when cold. Can anyone tell what the problem is ?
Expension vessel faulty, fill pressure to 1 bar when system pressutre to zero, and if fault continue than add another vessel to heating system elsewhere
k, December 2010
either pipe to pressure vessel is blocked, the vessel needs to be repressurised or the vessel faulty
