Appliance Repair Questions? Ask a Technician for Answers ASAP
How far are you getting through the ignition sequence?
Air pressure switch
you can here the ignition clicking as if it is having problem igniting it you give it a bag sometimes it just starts. Not sure about the sequence I presume it at the ignition stage.
If you give the boiler door a bang not bag, sorry
Ok, that is a lot of things that are still ok then.
Perhaps a poor spark or a sticking gas valve?
When was the last time it was serviced?
Perhaps worth spending £50 on a service as they can check the voltage to the pilot coil at the same time
You cannot get the coils any more so it would be a gas valve swap