KitchenAid Microwave F3T3 Error Code

The F3T3 diagnosis

The help pages for KitchenAid’s over-the-range microwave give F3T3 a single line, naming the hood temperature thermistor or its wiring as a possible problem.

Why it says hood

This type of microwave doubles as the ventilation hood over the cooktop, which is how one temperature sensor got its name. Past the name, the article does not say where the part is or which temperature it watches.

Power reset steps

1. Turn off the breaker(s) feeding the microwave and give it a minute.
2. Switch them back on.
3. Watch the microwave for a minute, looking for F3T3.
4. Run it to confirm that it operates.

How to read the outcome

Sensor entries that sit nearby

• F3T4: magnetron temperature thermistor
• F8E5: exhaust air temperature sensor
• F7E9: its own entry for the upper vent door being blocked, a condition that KitchenAid says risks overheating

Preparing for the visit

No symptoms are listed on the support page, so report only your own observations: the code, the date, and whether the reset cleared it. Panels stay on, because the inside of a microwave is trained-hands territory; that is a general safety remark, not KitchenAid wording. No normal reading for this thermistor is published by KitchenAid, so be skeptical of any figure found online that does not trace back to the manufacturer or your owner’s manual.

Hood thermistor repair in Los Angeles

If F3T3 persists, phone (310) 363-8964. Quote the model number and mention that you already cycled the breaker.

Source: KitchenAid Product Help, Over-the-Range Microwave Error Code