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wow! I got taught basic home electrics in a-level physics, surely its a requirement for fitting boilers. I checked on the polarity and the circuit board has a L and N symbol next to the power in, checked that the plug was wired correctly too just in case :P Sat down this evening with a...

Just looking over the comments and this one is purely out of interest, how does the detection electrode actually detect there is a flame, I understand the theory behind a thermocoupler, but the electrode only has a single core and common sense would say that the only way to detect presence is...

Thanks for the comments agile, very useful. Think I will def have to call in the cavalry on this one :( There was nothing visibly wrong with anything on the pcb when I inspected earlier, but as the boards are so complicated and half of the bits are sealed its not even worth trying to look at...

Cheers for the confirmation on the constant sparking, it did seem a little weird (then again, never seen one without a pilot light before). House was a repossession so there was very little information, I would guess quite a while though.

its been working fine for 2 years, so pretty sure it is, electrics in the house have not been touched for over 6 months (even lightbulbs!) , etc and it only started playing up this week

Hi, New on here (and to owning a house so taking care of a boiler). I have a Ariston Microgenus 23 which keeps cutting out (with the red ignition fail light coming on so I have to reset). I have not really taken any notice of it before and was always used to dealing with my parents boiler...