The High Limit Thermostat is an OEM replacement part for Frigidaire dishwashers. It is a temperature control device located in the dishwasher's heating assembly that monitors water temperature levels during cycles.  The high-limit thermostat plays a crucial safety role by automatically shutting off the dishwasher's heating element if water temperatures get too hot, preventing potential burns or damage. It ensures the dishwasher maintains the proper temperatures required for effective cleaning. Symptoms of a bad high-limit thermostat include:  Incomplete or ineffective cleaning even on short cycles   Lack of hot water or intermittent hot water during cycles Strange smells or visible steam emitting from the dishwasher The heating element fails to activate when needed This OEM Frigidaire replacement part is also compatible with some Electrolux, Westinghouse, and Kenmore dishwasher models.Part Number 154290204 (AP2109201) replaces 12758, 154290201, 154290202, 154290203, AH420575, EA420575, PS420575.