The reason I mentioned turning it off in the winter is that
my fridge melts when the outside temperature gets low.
Here's a little more info from:
"Can I save energy by putting my refrigerator or freezer
outside in the winter? -- Marty Siller, Oct. 2004
You can put your freezer outside as long as the temperature
is usually above 0 degrees F. You can't put your fridge outside,
though. Well, you can, but your food will spoil.
When the ambient temperature is too low your fridge gets
confused and so it doesn't run the compressor as long as it
should. That means that the temperature inside the fridge winds
up being too warm. A General Electric manual I just checked
said not to run the fridge when the ambient temperature is
below 60 degrees F."
You could just keep an eye on it and be careful that if it
does melt everything, it won't hurt anything.