F3 and F2 Error Codes

Question

I have sears Kenmore gas range and oven model # 911.7360191 We had an electrical storm and after that the oven appeared to be working. The gas stove works and the clock was fine. However, when I tried to pre-heat the oven I got an F3 error code. When I powered down the unit for a minute and brought it back on, I was getting an F2 error code that wouldn't stop beeping. Can you help?Thanks,Julie