KitchenAid Over-the-Range Microwave Code F1E1: relay control board alert

What F1E1 means

On KitchenAid over-the-range microwaves such as the KMHS120ESS or KHMS155LSS, F1E1 indicates a possible problem with the relay control board, or the wiring that serves it. The relay board switches power to heating and other loads. When it misbehaves, the microwave may not heat, the fan may act oddly, and the code stays on the display.

Common causes of F1E1

Relay control board has a failed relay or circuit
Wiring or connector at the board is loose
A power event that upset the board

✓ One safe check you can try

1. Press Cancel. 2. Unplug the microwave for one minute, or switch off its breaker, then restore power. 3. Let the display start. 4. Try a one-minute test with a cup of water. 5. If F1E1 returns, leave it unplugged and call us.

! Why to stop there

Relay boards switch mains power and must be tested with proper instruments
Removing a mounted microwave takes two people and care
We give a written price before work and a 30-day warranty after

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 E8KitchenAid Combination Microwave Code F6 E8: Manager control stopped responding FC E8KitchenAid Over-the-Range Microwave Code FC E8: Registration number entered wrongly F6 EAKitchenAid Built-In Microwave Code F6 EA: Interface control sensed over-temperature

F1E1F1E1 questions

What is the relay control board?

It is the electronic switchboard for heating, fan and lights. If it fails to switch correctly, the control posts F1E1.

Is F1E1 related to F1E4?

Both point to boards, but F1E1 names the relay board and F1E4 the appliance control board. Different boards, different parts.

Could this damage my range?

No. The code relates only to the microwave. Keep the range area clear and the microwave unplugged until we inspect it.