The F10 Error is an over heating fault. It means the oven is going above the set temperature and is not cycling properly. This error is normally caused by a failed Temperature Sensor. The F10 error can also be caused a failed main control or a wiring issue between the two. Check the wiring for loose connections or damaged wires. If the wiring looks fine, check the temperature sensor. The temperature sensor should be roughly 1100 ohms at room temperature if not the sensor is bad. If the senor checks good replace the main control.