See the information by Griffim. I took the door to pieces and it was the pcb connection in the switch control box. Re-soldered and voila! everything works. It took me about an hour and saved a fortune. Thanks for the advice.
Bennetto, October 2010
put a multimeter across the heater terminals.around 29ohms.could also be a bad solder joint on the main control pcb in the fascia panel.common issue
