25 watt light-bulb for various appliances, 120 volts, small base screw-in. Bulb has been updated and you may need the recommended socket to install this light bulb. Also bulb is no longer blue tint per factory.
Refrigerator defrost temperature sensor. The defrost sensor monitors the temperature of the evaporator. The defrost sensor has a fuse to back up the sensor in case the sensor fails. If the defrost sensor fuse blows, the refrigerator's defrost system will not work.