Charles C Leesburg , VA May 05, 2017 Appliance: Samsung Dryer DV400EWHDWR/AA-0001 Samsung Dryer Dv400ewhdwr/Aa-0001 / : Though the drum turned air blew and the cycles ran normally there was no heat. How to replace Dryer Thermistor Temperature Sensor. I replaced the thermostat, thermistor and thermal fuse, and the machine runs normally now. I did not test the three replaced parts to see which one in fact failed. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours