I have the same problem with my fridge/freezer up in Cheshire. It's also about 3 years old.
The problem is that my house is rented out at the moment, and I don't live just around the corner. The letting agency sent somebody round, who claimed it is the thermostat causing the problem, which will cost me over £100 to replace. He has since said the part is on back order, and the compressor is likely to be the next component to break-down, which will cost around £900...
I would appreciate it if anyone knows of a good and trustworthy engineer near Middlewich, Cheshire who could take a look? I don't believe the guy the letting agency sent round. Thanks in advance.
Andy Bird, February 2011