Cx complaint is that the unit was smoking and burnt toat in the upper oven on the toast mode. Upon arrival I inspected the elements and found no damage to the elements. I then attempted to start the upper oven and it throws an option not available error. I then entered into diag mode and found that there was an F6E1. I ran through the diag tests for the error code and found that the control has failed. I contacted WP Safety and explained my findings. I quoted the cx for the cost of the repair. Cx will decide at a later time.