What happens if I leave my ice maker on but it's not connected to a water supply?

If your ice maker remains turned on without a water connection, it can cause a buzzing noise, make the refrigerator section too cold, cause food in the crisper drawers to freeze, and make the freezer section get excessively cold. It's important to turn off the ice maker if you've decided not to use it or haven't connected a water supply line (Page 2).