F3T3 names the hood temperature thermistor and its wiring.
Model compatibility: KitchenAid reuses codes across series and model years, so F3T3 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
What this code means
Possible problem with the hood temperature thermistor or its wiring.
A F3T3 display on a KitchenAid over-the-range microwave carries a one-line explanation from the help site, which blames the hood temperature thermistor or the cabling to it.
At a glance
| Code | F3T3 |
|---|---|
| What it means | Possible problem with the hood temperature thermistor or its wiring. |
| What you can check | Turn off the microwave breaker, wait one minute, turn it back on, and monitor the microwave for a minute. Test that it operates. |
| When to call a technician | If F3T3 returns, schedule a service visit. Keep the panels on, and tell the technician the code, the date and what the reset did. |
On the word “hood”
Over-the-range microwaves also serve as a vent hood above the cooking surface, which accounts for the name on one temperature sensor. The article offers nothing about the part’s position or the temperature it tracks.
Reset the power
- Turn off the microwave’s breaker(s). Wait for one minute.
- Turn them on.
- Monitor the microwave for a minute for F3T3.
- Test that it operates.
A code that stays away leaves nothing more in the source to do. A code that returns sends you to KitchenAid service.
Related entries
F3T4 concerns the magnetron temperature thermistor and F8E5 the sensor for exhaust air. The blocked upper vent door that KitchenAid says could cause overheating has its own page, F7E9.
Tips before a call
Since the support page lists no symptoms, give the technician only what you saw yourself: code, date, and the breaker reset result. Panels should stay on, as opening up a microwave is for trained hands (our general safety remark, not KitchenAid’s). The company does not publish a normal reading for this thermistor either, so be wary of figures from other websites; only KitchenAid or your owner’s manual counts.
Microwave repair for KitchenAid owners across several metro areas
We take calls for the Miami, New York, Houston, Los Angeles and San Diego metro areas at (844) 919-2035. Give the code F3T3, the model number and the fact that the breaker was cycled.
Source: KitchenAid Product Help, Over-the-Range Microwave Error Code
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Sources & references
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