Thanks for the replies, and the warnings.
I do appreciate the risks associated with loosening the cover, please be assured that this was not a long-term or even a short-term solution but something I did for the sole purpose of trying to diagnose a problem and give as much info. as possible...
Hi all, just hoping someone could point me in the right direction as my boiler is doing (what I think) some strange things.
Potterton Suprima 50L - looks like it had a new board fitted a few years ago (5102160) so I'm hoping it's not that.
It constantly cycles:
Orange/Green light flashes...