F3 When I try to preheat the oven it gives me a code of F3 with beeping.

SOURCE: F3 Error

This is due to a Defective control board..You have to get it replaced..

SOURCE: Kenmore Electric Oven Model 4088816 - Error Code F3

f-3 means the oven temp sensor is bad. replace the sensor and problem solved

SOURCE: F4 error code on Jenn-Air W30400BC expressions built in oven

Slone, F4 is the code for a shorted temperature sensor. This is the temp probe in the oven. There are 2-quarter inch screws holding it on. It should pull out through the insulation until the quick connect comes through. If you want to make sure, the sensor should ohm out at 1143 ohms at 100 degrees. I think you can be pretty sure that this is the problem. The part number I have is 704657. Catriver.

SOURCE: F3 and F2 Error Codes

If hitting clear/cancel won't clear it try unplugging and then plug it back in. My guess is the oven control is bad. Here are the fault codes for this model.

Failure
Code Condition Check/Repair F0 or F1 Failed transistor in control If code cannot be cancelled, replace the Electronic Range Control (ERC) or touch pad F2 Oven over temp - exceeded 590F with door in unlocked position or 990F with door locked If actual temp condition occurred, look for welded relay contacts or high resistance connection or any cause in the oven temperature sensor circuit F3 Open oven temperature sensor circuit Measure oven temperature sensor circuit at oven temperature sensor (should be approx 1100 ohms at room temp); check for cut or pinched wire or loss of contact F4 Shorted oven temperature sensor circuit Same as above; check for melted connector or both leads shorted to ground F8 Component failure within Electronic Range Control (ERC) effecting temp processing circuits Replace Electronic Range Control (ERC) F9 Problem with door lock circuit such as pinched wire between Electronic Range Control (ERC) and door lock switch Check wiring and test operation of switch

SOURCE: What does the error code F1 indicate, on a Wolf Oven?

f1 is the control board and touchpad.