I used the scanner that my work has and this is what it came back with, if any can make anything of it.
I’m a plumber/ boiler engineer by trade and find I am capable of doing the work myself as long as it doesn’t require specialist equipment that I don’t have, so doing the work isn’t the problem, the problem is I don’t know what work I’m meant to be doing to do to solve the issue I Haven’t spent a lot on these parts but I’ve invested a lot of time just been changing parts on hunches which so far hasn’t really worked.
Thanks for all the replies btw, really appreciate it.