I Have a GE Electric Oven (Wall Unit) I purchased used last Feb. 2007 It was less than three years old, the lady remodeled her kitchen and bought new. It workd fine until I left Florida in April, when I shut off all the power. When I returned this year in Jan. and turned power on, the oven seemed to be okay, but a day later, the F7 code flashed. The oven had not been turned on yet, so I shut off the power. The next day I turned the power back on and lit the oven, heated it to 350 degees, and then turned the oven off. A day later, the F7 code came on again. I again shut off the power and tried it again today. I had the oven set at 350, and soon the F2 code flashed, and I could detect an odor similar to an electric fire. I believe the temperature was well over 350. Would appreciate any ideas you could give me.