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F-11

Frigidaire Microwave

Severity: Moderate

Source: OnlyErrorCodes.com — Every error code. One place.

Frigidaire Microwave F-11 Error — Sensor Fix

What Does This Error Mean?

F-11 on a Frigidaire microwave means the humidity sensor circuit is shorted — auto-cook features are disabled. Clean the sensor (visible as a small grille inside the cavity). Persistent F-11 needs sensor replacement, but manual cooking still works.

Affected Models

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

Common Causes

  • Grease coating the humidity sensor, causing a short
  • Liquid splashed onto the sensor during cooking
  • Sensor wiring damage or pinched cable
  • Failed humidity sensor component (NTC + humidity element)

How to Fix It

  1. Confirm manual cooking still works.

    Set a 30-second cook time at full power on a cup of water. If it heats normally, F-11 is limited to sensor cook features and the microwave remains usable for manual cooking.

  2. Locate and clean the humidity sensor.

    On Frigidaire microwaves the humidity sensor is typically a small grille on the back wall or upper-rear corner of the cavity. Gently wipe with a barely damp cloth and a tiny amount of mild dish soap. Do not let liquid drip into the grille.

  3. Use a vinegar-water solution for stubborn grease.

    If light cleaning does not resolve F-11, dampen a cloth with 50/50 white vinegar and water and wipe the sensor area. Allow to air-dry for 30 minutes before powering on.

  4. Book service if F-11 returns.

    A persistent F-11 after thorough cleaning means the sensor itself needs replacement. The part is roughly USD 30–60 and labour adds USD 100–150.

Frequently Asked Questions

Is the humidity sensor the same as the temperature sensor?

On most Frigidaire microwaves, the humidity sensor is a combined humidity + temperature module. F-11 typically refers to the humidity element, while F-10 refers to a temperature reading from the same module.

Can I bypass F-11 to use sensor cooking?

No — if F-11 is shown, sensor cooking is disabled by the control board to prevent inaccurate cook times. Manual time-cook continues to work and is a safe alternative.