My Ferroli Hawk 2 will not provide hot water or CH. Fan is working, pilot light is on (on these models it stays on), changed the air pressure switch still no luck. No other fault is showing up. The boiler will not fire up on turning on of the Tap or putting CH on.

Can anybody advise as had and engineer made me buy parts i don't need.

Paul G, December 2008

check the led on the pcb is lit this will confirm if air pressure switch is making if not then the likely cause is a lack of pressure differential across the fan it may be acase of cleaning out the impeller on the fan and check heat exchanger is clear if not new fan

solheat, December 2008

firstly you need to find out if your gas valve is being energised. If the fan is running and the pressure switch is making, then the next step will be to send a signal to the board, which will then send power to the gas valve. If you have power at the gas valve, then you will be looking at a gas valve fault, if there is no power at the gas valve, then you will be looking at a PCB fault. Expensive parts for a ferolli so get someone who knows what they are doing to look at it before commiting to buy any parts

gasmandave, December 2008