I have a Servis larder fridge model No: M7611-6W.
It is getting too cold and items on the top shelves are freezing, even with thermostat set low, so I suspected that the thermostat may be faulty.
The back inside wall of the fridge is covered in a layer of ice, top 25{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} only, the rest is ok, would this indicate a more serious issue such as low gas ?