The thermal fuse is #4 on the break down diagram. You have to check it for continuity and replace if it’s open.
If the thermal fuse is open then it has to be replaced together with the high limit thermostat (#6 on the same diagram) even if this thermostat passed the continuity test.
Here are the break down diagrams and the parts list for the Amana dryer Model LE4407L
Gene.