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Tyler Z.
Tyler Z., Appliance Doc
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Experience:  9+ years being an appliance technician with factory training.
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I have a GE wall oven and once it heats up I will randomly

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I have a GE wall oven and once it heats up I will randomly get an error message: -F3- and loud beeping. What is this error message telling me?
Hello, and thank you for using this service. I'll be helping you with your problem today.

So F3 means that your oven thinks your oven sensor has failed. This can be caused by either a bad oven sensor or a bad display relay control board. You can't test the board but you can test the sensor. Open the door and remove the 3-4" long thin metal rod attached to the back wall. There are 2 screws holding the sensor on that you can remove and then pull the sensor forward until you can disconnect it. With a multimeter, check the resistance of the sensor at room temperature and it should be about 1080 ohms. If it's not, replace the sensor, otherwise you need to replace your relay board.

Below is a link to the oven sensor since this is by far the more likely part that has failed.

CLICK HERE for sensor

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