Low pressure on a Saunier Duval Themaclassic F24E?
Hi,
The pressure on my Saunier Duval Themaclassic F24e will not increase to above 1 bar without water coming out of the boiler drain valve. Does anyone know what could be causing this?
change pressure relif valve, to do this you have to drain system from drain out point let open all rad valves air vent, when fix new one close all rad air vent fill system take air out one by one fill to 1.3bar
