F12
Ariston
Communication Error Between Main Board and Display Board
Display panel is dead or shows only partial information; F12 may be logged or flashed via LEDs.
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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 or damaged communication harness, faulty display (UI) board, defective main control board communication circuit, moisture ingress in console
How to Fix / Troubleshooting
Safety: Disconnect power before removing the console.
Steps:
- Inspect harness: Remove the top cover and front console. Locate the multi-wire harness between the main board and the display/UI board. Ensure connectors are fully seated.
- Check for corrosion: Look for signs of moisture or corrosion on connectors and the UI PCB. Clean lightly with isopropyl alcohol if minor.
- Harness continuity: Use a multimeter to check continuity of each wire in the harness.
- Board substitution: If wiring is intact, replace the display board first. If the issue persists, the main board may be defective.
Tip: Ensure the console is properly sealed and that detergent spills are cleaned promptly to prevent future corrosion.
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Repair Difficulty
Hard
4/5
Required Part
Display / User Interface Board
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