The "F1" is a failed oven control board. The "F2" is an over temperature failure. Both is likely cause by the oven control, however it could also have a faulty oven temperature sensor probe along with a failed oven control.
The oven control is part #WB19X255R at $219.99 and the oven temperature sensor probe is part #WB21X5301 at $73.49
I recommend replacing the range rather than having it repaired.