Baumatic BR15A larder fridge problems

Hi All,

I’m having a few issues with my fridge and i’m hoping for some adive on potential problems. Firstly over the last year we’ve had to gradually turn the thermostat up as the fridge is too cold and we couldnt maintain the correct temp. We’re now on 1 on the stat and it’s reading freezing (about -5 to -10) on the fridge thermometers we’ve brought. I’ve had the fridge out and hover/blown out any dust on the fins with no change. Then ive replaced the stat with also no change. The fridge has now started to form ice down the back wall but only the top half, the bottom half has no ice formation. Also the compressor sounds as though it’s on all the time. Door seal looks good.

Many thansk and look forward to hearing any replies.
Craig