My Ferroli falcon keeps going into lock out on both hot water and central heating. It is intermitant and can start up and work for a few hours at a time before locking out. It is locking out the split second it recieves the call for hot water or heating before the fan has had time to get up to speed and make the pressure switch and before the ignition cycle so I don\\\'t think these are the problem. I tried linking out the 100 degree safety stat as this is a normaly closed switch but it makes no difference and in any case with this left open it does not shut down the boiler until after the fan pressure switch is made so my fault is occuring earlier in the start up cycle. Any suggestions greatfully recieved