KitchenAid Built-In Microwave Code F2 E3: control does not accept key input

What F2 E3 means

Owners of KitchenAid built-in microwaves and microwave-wall ovens such as the KMBP100ESS or KOCE500ESS may see F2 E3 when the user interface or keypad, the control, or the associated wiring may be having trouble. The oven stops responding the way it should, and the code replaces the normal display. Treat it as a keypad-area alert that needs testing.

Common causes of F2 E3

Keypad failing in part
Control not recognizing input
Wiring problem in the panel circuit

✓ One safe check you can try

1. Press Cancel once. 2. Make sure the panel is clean and dry. 3. Turn the breaker off for sixty seconds and back on. 4. Try the clock. 5. A returning F2 E3 means stop and arrange service.

! Why to stop there

The panel, control and wires all look alike until they are tested
Parts ordered blindly often turn out to be wrong
We provide the price in writing up front and a 30-day warranty on completed work

Opening a panel yourself does not automatically cancel a manufacturer warranty, but it can cause accidental damage, and some manufacturers set their own service conditions. Check your warranty terms, or ask us, before deciding.

→Same appliance

Other Microwave codes

Probe or Insert ProbeKitchenAid Combination Microwave Message "Probe" or "Insert Probe": Seat the meat probe in its jack PUSH or PSHKitchenAid Built-In Microwave Message PUSH or PSH: The oven is waiting for Start Registration ErrorKitchenAid Over-the-Range Microwave Message "Registration Error": Check the home network and try again Sabbath, Sab, 5Ab, or 5A6KitchenAid Built-In Microwave Display Sabbath, Sab, 5Ab or 5A6: Sabbath Mode is on SEKitchenAid Over-the-Range Microwave Code SE: Keypad or user interface problem F6 E7KitchenAid Combination Microwave Code F6 E7: Manager board for the upper cavity FC E7KitchenAid Over-the-Range Microwave Code FC E7: Appliance did not join the router F6 E8KitchenAid Combination Microwave Code F6 E8: Manager control stopped responding

F2 E3F2 E3 questions

My oven shows F2 E3 right after power returned from an outage. Why?

A power event can leave the control in an error state. A breaker reset may clear it, but if not, the board or its wiring may have been affected.

Can the code appear without any pad being pressed?

Yes. A shorted pad can look like a continuous key press, and the control then reports the error on its own.

Should I stop using the microwave function too?

Yes. If the control is unreliable, even simple heating can behave unpredictably. Wait for the inspection.