KitchenAid Built-In Microwave Code F8 E5: Fan air temperature sensor reading lost

What F8 E5 means

A KitchenAid built-in microwave or combination microwave-wall oven, such as the KOCE500ESS, may display F8 E5 when the exhaust fan air temperature sensor or its wiring has a problem. It is a close sibling of F8 E4, sharing the same listed meaning. Owners notice the code on the display and the unit declines to cook. Cooking usually stops completely until it is cleared.

Common causes of F8 E5

Exhaust fan air temperature sensor producing an out-of-range signal
Wiring to the sensor with a loose or damaged connection

✓ One safe check you can try

1. Press Cancel and clear the code. 2. Make sure the unit's grille and ventilation openings are free of dust and items. 3. Shut off the breaker for a minute, then restore it. 4. Try a short test with water; if F8 E5 reappears, call us.

! Why to stop there

The sensor sits deep inside the built-in unit.
Heat protection should never be worked around by repeated restarts.
Our diagnostic visit ends with a written quote, and repairs carry a 30-day workmanship 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

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 Probe or Insert ProbeKitchenAid Combination Microwave Message "Probe" or "Insert Probe": Seat the meat probe in its jack F4E1KitchenAid Over-the-Range Microwave Code F4E1: Cavity thermistor circuit F9Q1KitchenAid Over-the-Range Microwave Code F9Q1: Touch pad and its wiring F4E4KitchenAid Over-the-Range Microwave Code F4E4: Humidity thermistor or its wiring

F8 E5F8 E5 questions

Why do two codes name the same sensor?

The listed meaning is the same for F8 E4 and F8 E5. We treat them as separate display messages and test the sensor circuit on your unit to find out what is happening.

Will it clear itself?

Sometimes a reset clears a one-time glitch. If the code returns the same day, plan a visit. Like F8 E4, it needs a sensor circuit test rather than a simple wipe-down.

Is it urgent?

It concerns heat monitoring, so do not keep cooking with it showing. Leave the unit off and call. Reset power once and watch for a minute, and book a visit if it comes right back.