Whirlpool W10839843 chilled cabinets. This crucial component serves as your refrigerator's cooling system. It uses a sensor to continuously check the temperature within. When the temperature climbs above the intended level, the thermostat starts the compressor, circulating cool refrigerant throughout the refrigerator. The thermostat instructs the compressor to shut off when the predetermined temperature is attained. This cycle makes sure that your food is always in a cool, ideal atmosphere. A defective thermostat might cause temperature changes, causing your food to spoil or the compressor to overwork. Replacing a malfunctioning thermostat with the W10839843 ensures that your refrigerator.