Frigidaire Range Error Code F109

F109 means that the range's Network Interface Unit (NIU) attempted an over-the-air firmware update and was unable to complete it. The update process requires a stable internet connection, and any interruption will trigger this code. The range itself continues to operate normally, and F109 is not an indication of a cooking or safety system failure.

A reset may temporarily clear the F109 display, but it will not resolve the underlying cause. If the network issue that caused the failed update has not been corrected, the error is likely to reappear when the range attempts another update. Fix the network connectivity problem first to prevent the code from returning.

If the cause is a network or router issue, there is no parts cost involved, only time spent troubleshooting your Wi-Fi setup. If the NIU hardware is determined to be faulty and requires replacement, repair costs including parts and labor typically range from $150 to $350 depending on your location and the service provider. Always confirm the network is functioning correctly before concluding that a hardware repair is needed.

Start by confirming that your home Wi-Fi network is active and that other devices can reach the internet. Make sure the range is within reliable signal range of your router. If the network is working correctly, you can attempt to clear the error and allow the range to retry the update. If the error returns repeatedly despite a solid network connection, the NIU may need to be inspected or replaced.

No, F109 is not a safety-related error. It only indicates that a software update over the network could not be completed. All cooking functions, temperature controls, and safety systems operate independently of the OTA update process and are not affected by this error code.