i have gas to the gas valve and on the outlet but i dont get a spark ,could it be gas valve broke or ignition box on the front of the valve ,its a ferrolli combi boiler.

darren, January 2010

if the pump and fan are running with the boiler on the first thing to check is the fan pressure switch try gently tapping it or disconnect one of the rubber tubes and gently suck or blow you should hear a click if the boiler starts to spark then the switch needs replacing best to try both tubes to be sure if you cant get a spark then it is probably a faulty pcb

brian, January 2010