If you have a freezer in your garage or shed, check that the thermostat is set to winter, between 1 to 3. I had left our freezer on its summer setting of 5 to 6*. In this cold weather freezers in outhouses will turn off. Ours did and started to defrost. (If all else fails, read the handbook.)
Happy New Year,
Brian O’Hara
* The settings for your freezer may be different
Wootton Courtenay 