Unfortunately your lack of experience shows in this case!
You are right thats its a flame detection problem but almost certainly its as a result of water leaking on that model.
New boiler time!
Tony
I called out Ideal I hope they can repair their cr*p! Thank you
and then it goes off, leaving led2 on PCB 37lit. Before this to happen it ignites and heat the tap water for 5 to 10 seconds then the water turns into cold again. Well, this is less then IDEAL and I would be grateful for any helpful RESPONSE.