Recent content by chornsey

I know think it might be the sequence PCB as the microswitches seem ok but it just isn't even trying to ignite. Any thoughts?

I have an old Potterton Lynx One Combi Boiler. Last year we replaced the diaphragm in the diverter valve and it has been working fine since then. However, today there was not central heating or hot water. The demand light is on but boiler is not lighting. The ignition failure light doesn't not...