Hello. I have a Ferroli FER Falcon II Combi Boiler. The fan runs but the ignition does not fire up. However, I took the room seal front panel off and it works. I put the front panel back on and the ignition now fires but after a while it cuts out and fires back up again straight away. If I leave the front panel in place but not tightened up it stays on for much longer. I understand it could be the Air Pressure Switch or the Safety Overheat Stat. Same problem for heating and hot water. Can anybody confirm that?? Thanks. Graham.

GDF, July 2009

air pressure switch or fan venturi is at fault.

Ian, July 2009

it does sound like a fault with the air pressure switch.get it checked by a gas safe registered installer

john the gas, July 2009