When the Mistral gets to be a few years old they suffer from these sorts of problems, open the freezer and if you can hear the fan going round and feel a draught inside then you have an ice block in the duct from the freezer to the fridge so you should store your frozen food somewhere then switch the unit off for 24 hours and leave it at room temperature with the doors wide open then switch it on and it should be fine.
powerhousesteve@hotmail.com, November 2005