The first thing to check is the reset button on the rear of the appliance.
Pull the machine out and press the red button.
If it clicks, try the appliance again.
If that doesn't fix the issue you will have to meter the element and T/stats,
Any that have open circuits will need replacing,
also check the wiring for continuity,
if my memory serves me correctly there is a T/stat fitted to the exhaust duct
(fan housing), on occasions if their is a restriction in the exhaust vent it takes out this stat.
paul, March 2012