F11
LG
Keypad communication error
LG range shows F11 and may not respond to some keypad inputs.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Loose keypad ribbon cable, Damaged touch panel, Failed main control keypad interface
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before accessing the control panel.
- Access control panel: Remove the rear cover behind the control panel. Locate the flat ribbon cable from the touch panel to the main control board.
- Reseat cable: Gently release the locking tabs and remove the ribbon. Inspect for corrosion or damage, clean contacts with isopropyl alcohol, and reinsert fully, ensuring it is straight and fully seated.
- Check for moisture: If the panel was recently cleaned with liquid, allow it to dry completely for several hours with power off. Avoid spraying cleaners directly on the panel in the future.
- Test operation: Restore power and test all keys. If F11 returns or some keys do not respond, the touch panel or main control may need replacement.
- Replace faulty component: If the keypad overlay is separate, replace it first. If integrated or if replacing the overlay does not help, replace the main control board.
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Repair Difficulty
Medium
3/5
Required Part
Oven Control Panel (Touchpad) or Main Control Board
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