Hi there!
We have a Fridgemaster MTRF-226A fridge freezer, recently the fridge top-half has been getting too cold, the dial is all the way down to 1, but ice forms on the back wall, and in the drip tray part (which then blocks it) – The probe that is screwed to the back wall (I was nosey and wondered what it was) is rusty, but other than that, it’s not anything I have an experience in!
Would a replacement Thermostat fix the problems? I found one online here.