F23
LG
Touch Controller Error
LG oven shows F23 and may not respond to user inputs or may freeze.
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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
Defective touch controller IC on display board, Damaged touch glass or capacitive sensor, Electrical noise or surge affecting controller
How to Fix / Troubleshooting
Safety first: Disconnect power before removing the control panel.
- Clean touch surface: Wipe the control glass with a soft, dry cloth. Remove any moisture, grease, or cleaning residue that could interfere with touch sensing.
- Power reset: Turn the breaker OFF for 5–10 minutes, then ON. Test the touch controls again.
- Inspect display board: Remove the control panel and examine the display/touch PCB for cracks, burn marks, or corrosion. Ensure the ground connections are secure.
- Check for moisture: If the oven was recently steam-cleaned or exposed to heavy moisture, allow the control area to dry completely (several hours) before retesting.
- Replace display/touch board: If F23 persists and the board shows signs of failure, replace the display/touch controller board with an LG-compatible part.
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Repair Difficulty
Medium
3/5
Required Part
Display / Touch Control Board
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