KitchenAid Oven Error Code F1E4

F1E4 indicates a component failure in the microwave oven power relay. This relay controls power delivery to the microwave section of the appliance, and the control board has detected that it is not functioning correctly. The fault is designed to prevent unsafe operation when this critical switching component fails.

You should not use the microwave function of your oven while F1E4 is active. A failed relay, particularly one with welded contacts, can leave the high-voltage microwave circuit in an unsafe state. Standard baking and broiling functions may still operate, but the appliance should be serviced before resuming microwave use.

Repair costs vary depending on the specific model and labor rates in your area. The power relay itself is generally a lower-cost part, but total repair costs including professional labor typically range from $100 to $300. If the control board is also found to be at fault, costs will be higher.

The repair requires replacing the microwave oven power relay, which is located within the high-voltage microwave circuit. Even after unplugging the unit, high-voltage capacitors in this section can retain a dangerous charge. This repair is best handled by a qualified appliance technician who can safely discharge the capacitors before working on the components.

Unplugging the unit and restoring power may temporarily clear the display, but the F1E4 code will return if the relay has genuinely failed. Because this is a hardware component failure rather than a software or sensor glitch, the underlying relay must be replaced for the fault to be permanently resolved.