Dryer runs, but no heat. I replaced the Thermal Fuse and High Limit Thermostat. Specifically the part listed as 47 on the attached diagram at the top of this forum was blown, no continuity. I purchased a kit and replaced both units (47 and 48). The unit heated up after replacement. Ran a load through it and the heat gave out again. I tested 47 and it had blown again. Any idea on why the element heating so high that it is blowing this fuse?