My boiler specification is potterton netaheat model 6/10. The problem with the boiler is can't fire up to heat up both the heater and the water. Has this problem got to do with the fan or the pressure switch.
Possibly, check you have power to the fan if yes and fan dont run replace it, if you dont have power check external controls and pcb & if you do have power to fan and it runs but still wont fire up check you air pressure switch