Do-It-Yourself Story

Unplugged the oven. Removed the ribbon from the control board. Plugged the oven back in and F1 code with beeping appeared within a minute. Checked resistance of oven temperature sensor which was 1050 ohms at room temperature meeting specifications. Ordered control board and door gasket from APP. Parts arrived quickly, were brand new, and packaged well. Installed parts and so far no F1 code after 4 times using the oven. Note: used smartphone to take photos of wire connections of old control board before removing to aid in installation of new control board since there are many connections to be made.