Just a thought that might be helpful, I get problems if I forget to clear the dust from the heat exchanger in the bottom rh side of the freezer. Usually both the fridge and the freezer just stop working, but when the dust is cleared by use of a bottle brush and a powerful vacuum cleaner, the compressor starts up and the machine is back on line.
Could part of the problem outlined above be affected by a partial restriction of the air flow over the heat exchanger?
John B
September 2010