The Whirlpool WPW10392132 Defrost Bi-Metal Thermostat regulates the defrost cycle in compatible refrigerators by responding to temperature changes around the evaporator. This component acts as a temperature-sensitive switch, opening or closing its electrical contacts at specified temperatures to control power to the defrost heater. Its function supports frost removal from the evaporat... https://www.partsmelange.ca/whirlpool-wpw10392132-defrost-bi-metal-thermostat-for-refrigerator