The first thing I would do is check for continuity the safety thermostat (#33 on the
cabinet/drum break down diagram), the flame sensor (#79 on the
burner break down diagram), and the cycling thermostat (#15 on the
motor break down diagram).
If any of them is open - it has to be replaced.
- The part number for the safety thermostat is
AP2152884
- The part number for the flame sensor is
AP2142636
- The part number for the cycling thermostat is
AP2106565
Here are the break down diagrams for the Frigidaire dryer
Model FDG546RES0
Gene.