I just wanted to say thanks for posting the above solution when you did (all those years ago!) as it helped me fix a fridge freezer today. Much appreciated.
I’ve just bought some old Belling oven manuals and am waiting for them to arrive. One if them is for the Classic 90, so I might be able to help you in a week or so.
Thanks for your reply, I really appreciate you taking the time. How would a potentially broken wire to the circulation motor effect the water level though when it is first filling?