Reply To: Forgetting to close the fridge light before Shabbos

About the only refrigerators without lights are those little dorm ones. Ordinary modern refrigerators have a switch that affects not only the light, but the self-defrost cycle. That means it’s not enough to unscrew the bulb. You must keep the switch down. I use duct tape, but there is a device sold for this. Leaving the switch down all week is not good for the refrigerator because the self-defrost cycle won’t be triggered and the fridge may ice up and stop working (I know this because I had such a refrigerator). High-end refrigerators are more complicated.