KitchenAid Combination Oven Microwave Code F1 E3: microwave appliance manager alert

What F1 E3 means

Combination microwave-wall ovens from KitchenAid, among them the KOCE500ESS and KOCE900HSS, display F1 E3 when the microwave appliance manager, or its wiring, may have a problem. The appliance manager is the electronic board that runs the upper microwave cavity. When it is out of range, the microwave side shuts down while the display stays on.

Common causes of F1 E3

Microwave appliance manager board has a problem
Wiring or connector to that board is loose
Short-lived electrical disturbance in the microwave side

✓ One safe check you can try

1. Press Cancel. 2. Shut off power at the oven's breaker for a full minute. 3. Turn it back on and see if the clock appears. 4. Test the lower oven briefly. 5. If F1 E3 returns, leave the microwave side unused and call us.

! Why to stop there

The manager board drives high-voltage parts, so only trained hands should open the cabinet
A technician can confirm the board against its wiring before parts are bought
You see the written price first, and repairs come with a 30-day warranty

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 F4 E4KitchenAid Combination Microwave Code F4 E4: Humidity sensor signal missing from the cavity F7 E9KitchenAid Over-the-Range Microwave Code F7 E9: Is the upper vent door blocked? Flashing Time, Clock, 12:00, Power Loss or Enter TimeKitchenAid Built-In Microwave Messages Time, 12:00 and Power Loss: Set the clock after an outage

F1 E3F1 E3 questions

What does the appliance manager do?

It switches and monitors the microwave side: power relays, door status and cooking timing. F1 E3 flags that this board or its wires may be misbehaving.

Does F1 E3 affect the oven below?

Usually not directly, because the lower oven has its own control. We still check both during a visit.

Will resetting the breaker be enough?

It might clear a brief glitch. If the code returns, the board or its connection has a lasting issue and needs a technician.