We have the same fridge freezer, and the same th8ing happened to ours, the engineer came out and took the freezer draws out, and tookm the back off behind the draws it was covered in ice so it stops the fan working because it is the fan that takes the cold air from the freezer up to the fridge, all he did was use my hairdryer and melt all the ice, then plugged the ff back in and it started working again, so every time the fridge gaets warm we just do this ourselves.
Elaine Whitty, December 2007