Frigidaire Microwave F-10 Error — Temp Fault

What Does This Error Mean?

F-10 on a Frigidaire microwave means the cavity temperature sensor detected over-temperature. Unplug, allow 30 minutes to cool, and clean the cavity. Persistent F-10 with a cool cavity points to a faulty sensor needing service.

Affected Models

Frigidaire FFMV1645T
Frigidaire Gallery FGMV176N
Frigidaire Professional FPMO227N
Frigidaire FFCE2278L
Frigidaire FGMO226N

Common Causes

Food burned or scorched in the cavity raising internal temperature
Ventilation blocked above the microwave (over-the-range models)
Failed cavity temperature sensor (NTC thermistor)
Cooling fan failure causing residual heat to build up

How to Fix It

Unplug the microwave for 30 minutes.

F-10 latches even after the cavity cools — a power cycle is needed. Unplug at the wall and allow the microwave to fully cool. For over-the-range models, also stop cooking on the stove below to prevent further heat soak.
Inspect the cavity for burned food.

Open the door and look for any burned food or scorched residue. Wipe the cavity clean with a damp cloth. Burned debris can continue to outgas heat that triggers F-10 even after the obvious cooking is finished.
Check ventilation on over-the-range models.

Over-the-range microwaves vent through the top of the cabinet. If the vent is blocked by a cabinet liner, dust, or a hood filter, heat builds up. Clean the grease filter beneath the microwave and check that nothing covers the top vent.
Restore power and test.

After 30 minutes of cooling, plug the microwave back in. If F-10 clears and normal cooking resumes, the issue was a one-off heat event. If F-10 returns immediately, the temperature sensor or cooling fan is faulty — book service.

Frequently Asked Questions

Can F-10 damage my Frigidaire microwave?

F-10 itself is a protection feature — the microwave shuts down to prevent damage from over-temperature. However, the conditions that cause F-10 (severe burning, blocked ventilation) can damage the cavity or magnetron if they recur.

Why did F-10 appear when nothing was burned?

F-10 with no obvious heat source usually means a faulty temperature sensor reading falsely high, or a failed cooling fan that allows normal residual heat to build up to over-temperature levels. Both require service to confirm.