This unit has an upper and lower oven. About a month ago an "F5" code showed up on the display, but cycling the circuit breaker cleared this error. Last week a "F10" showed up and would not clear. Now the error is clear but neither oven works properly. When the upper oven(main) is turned on only the broil element fires. When trying to use the lower oven the temperature swings from 100-400 degrees as measured with an infrared gun. This am I replaced the EOC module to no avail. next I will measure the ohms for the burners and the upper oven temp probe. Any other thoughts? Clock, timer touchpad and surface burners all work fine. When oven control is on it shows lower element heating but only broil element fires with old eoc or new?