My ariston boiler has no heat or hot water it advises that the air pressure switch needs replacing . My husband has fitted a new air pressure switch as he is a gas safe engineer ,but unfortunately rarely does boiler repairs he does mostly gas cooker repairs. Is there something else that needs to be done after the air pressure switch has been replaced ? I would be grateful for any advise please.

carena, October 2009

is this the e33 / e34 fault? if so it may also be a faulty fan, blocked venturi or aps tubes. and it's also a possibility that it's a faulty pcb

Ian, October 2009