I have a Hotpoint RLA36G larder fridge recently it got colder and colder with some liquids freezing. I thought no problem the thermostat must be faulty replaced with a genuine makers part fault still remains the motor runs all the time and frost is developing on the inner back wall at the top. Both exterior sides of the fridge are very cold to touch the cooling grid at the back is warm to touch at the top but cool nearer the bottom. Anybody any ideas its only 30 months old with the two year warranty just ran out 🙁