William S Wellington , FL January 15, 2017 Appliance: Samsung Dryer DV45H6300EW/A3-0000 Samsung Dryer Dv45h6300ew/A3-0000 / : No heat in dryer. How to replace Dryer Duct Heater Assembly. Tested ohms in thermal fuse and found it open. I decided to replace the entire assembly which included elements, thermal fuse and hi limit thermostat. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes