No, Darnit, The Light Doesn't Go Out When I Close The Door!

Harvey51 wrote:
Replace the incandescent bulb with an LED bulb to cut the electricity use and heating by a factor of 5 to 7. It won't matter much if it is on all the time.

If one is using the low temperature system that leaves the light on all the time for cold weather operation, this is somewhat counter-productive in that the LED bulb will also cut out the heat production by the same factor. Assuming nothing is defective or misadjusted, that's the usual reason the fridge light would be on all the time.