I have a potterton netaheat Mk11 10-16 the presure switch apears to be faulty the boiler wont light. if i take the pipe off the switch and blow gently it will then light it is an old but brilliant boiler can i get a replacement switch if so what type
john G
to blow on the pressure switch tube and the boiler lights must mean the switch is working.it may be the fan or tubes that are faulty. there should be two tubes check both are intact.