The F2 error code on the type of range that you seem to be describing normally indicates that you have a problem with the oven temperature sensor probe or the control board. Try disconnecting electrical power from the range by shutting off the house circuit breaker for that appliance for 1 minute. After resetting the breaker, monitor the range to see if the F2 code returns. If not then the range should work normally.
If the F2 returns, you will probably need to check the resistance of the oven temperature sensor probe. The model number that you provided does not appear to be valid. I recommend that you recheck that model number and reply with an updated number if it is incorrect in your details. With an updated model number, we should be able to provide additional troubleshooting and repair help for this problem.
If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website:
Sears Home Services