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Error code reference

LG Range Error Code F27

Stalled fan sensor error

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What the F27 error code actually means

The F27 error means your LG range detected that the oven got too hot too quickly, which suggests the cooling or convection fan stopped working properly. Without the fan moving air inside the oven, heat builds up faster than it should. This is your range warning you that something is wrong with the fan or the part that monitors it.

Diagnostic procedure

The full F27 procedure

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1
First diagnostic step
Check wiring and stalled fan sensor.
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Most common causes of F27

Ranked by how often they cause this code
  1. 1Faulty or seized fan motor
  2. 2Defective fan sensor
  3. 3Wiring or connector damage
  4. 4Obstruction blocking the fan blade
  5. 5Failed control board

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Questions people ask about F27

What does F27 mean on a LG range?
The F27 code on an LG range signals a stalled fan sensor error. The control board starts monitoring oven temperature once it reaches 115 degrees Fahrenheit, and if the temperature climbs 12 degrees or more within a 10-minute period, the board concludes the fan has stalled. This error points to a problem with the fan motor, fan sensor, or the wiring connecting them.
Is it safe to use my LG range while the F27 code is showing?
It is not recommended to continue using the range with an active F27 error. A stalled fan can allow heat to build to unsafe levels inside the oven cavity, which may damage internal components or create a fire hazard. Discontinue use until the underlying cause has been diagnosed and repaired.
How much does it cost to repair an F27 error on an LG range?
Repair costs depend on which component has failed. A fan sensor replacement typically falls in the range of $50 to $150 for parts, while a fan motor replacement may run $75 to $200 or more depending on the model. Adding a technician labor charge can bring the total repair cost to anywhere from $150 to $350 or higher in some cases.
Can I fix the F27 error myself?
Some causes of F27 are DIY-friendly, such as clearing a physical obstruction from the fan blade or reseating a loose wiring connector. However, replacing a fan motor or fan sensor requires basic electrical knowledge and comfort working inside the appliance. If you are not confident working around oven components, a qualified technician is the safer choice.
Will resetting my LG range clear the F27 error?
Resetting the range by cutting power at the breaker may temporarily clear the F27 code, but the error will return if the underlying fault has not been fixed. Because the code is triggered by a specific temperature rise pattern during operation, the fault will reproduce as soon as the oven reaches the monitoring threshold again.

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