Dishwasher Thermistor. Thermistor DD32-00005A is an original equipment manufacturer (OEM) part that fits some Samsung dishwashers.Thermistor DD32-00005A monitors the water temperature inside the dishwasher and communicates the temperature to the electronic control.Replace the thermistor if the dishwasher displays a temperature sensor error code and a multimeter check shows thermistor resistance of less than 8,500 ohms or- Dishwasher Thermistor.