Shorted Key Error
F-3
A button is stuck or held.
LG Microwave F-3 Error Code Error Code Possible Causes
- The keypad is defective.
- The microwave control PCB is defective.
- Wiring issue between the keypad and the control PCB.
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This information is provided for educational purposes only. Please consult the appropriate Service Mode or Technical Document for your model. Always take proper safety precautions when installing or repairing any major appliance.