First and foremost, if you don’t have a multimeter you should buy one before buying a single part. When the Samsung has no error codes and won’t heat, there could be a number of things wrong and you need to open the dryer up and start testing. Google search for videos on how to take apart your dryer. My Samsung wasn’t difficult, just time-consuming as the entire thing had to come apart to access the fuses and whatnot. Long story short, a fuse tested bad. I changed the fuse and the high limit thermostat too because a Google search suggested they could fail together. Put it all back together and back in business. Other advice: wear gloves. The sheet metal in a dryer is sharp. Oh and clean out the dryer while you’re in there. And test every part so you know what to buy!