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F-30

Frigidaire Microwave

Severity: Moderate

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

Frigidaire Microwave F-30 Error — Sensor Open

What Does This Error Mean?

F-30 on a Frigidaire microwave means the humidity sensor circuit is open — wiring is disconnected or the sensor has failed completely. Sensor cooking is disabled. Manual cooking still works. Permanent fix requires sensor replacement.

Affected Models

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

Common Causes

  • Sensor wiring connector worked loose due to vibration
  • Pinched or broken sensor cable inside the microwave housing
  • Failed humidity sensor (open-circuit failure mode)
  • Damage from a previous repair or installation

How to Fix It

  1. Confirm manual cooking still works.

    F-30 only disables sensor cook. Set a 30-second test using time-cook on a cup of water. If it heats normally, the microwave remains usable for manual cooking while you arrange repair.

  2. Unplug for 5 minutes and retry.

    A power cycle occasionally clears a transient sensor read. Unplug at the wall, wait 5 minutes, and plug back in. If F-30 clears, the cause was a brief glitch.

  3. Note recent events.

    F-30 often appears after the microwave has been moved, jolted, or had its cabinet vent cleaned. If the unit was disturbed recently, a wiring connector may have worked loose internally.

  4. Book service for sensor or wiring inspection.

    F-30 is not safely user-serviceable — accessing the wiring requires opening the case, which exposes the high-voltage capacitor (lethal even unplugged). A technician will check the harness connector before replacing the sensor.

Frequently Asked Questions

What is the difference between F-11 and F-30?

F-11 means the sensor circuit is shorted (often by grease or moisture). F-30 means the sensor circuit is open (wiring disconnected or sensor failed). F-11 is often cleaned away; F-30 typically needs replacement.

Will my Frigidaire microwave still cook if F-30 is showing?

Yes — manual time-cook works normally with F-30. Only sensor-based auto-cook (Popcorn, Reheat, Auto Defrost on weight) is disabled. The error remains on the display until the underlying issue is repaired.