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F11 means that your touch control panel has shorted which is why it's not working. You'll need to order and replace the entire touch control panel in order to resolve the issue I'm sorry to say. As for the model number, it will be located on a sticker around the front frame of the oven and can be seen if you open the door or remove the drawer below the door (if there is a drawer on your model). You will need the model number to order the correct touchpad for your unit.
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