F12
Hotpoint-Ariston
Communication Error Between Display Board and Main Control Board
Display panel dead or shows F12; machine may power but not respond to commands.
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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 communication harness, Faulty display (UI) board, Faulty main control board, Oxidized connectors due to moisture
How to Fix / Troubleshooting
Safety: Disconnect power before accessing controls.
- Check harness between boards:
- Remove the top cover.
- Locate the cable linking the front display board to the main control board.
- Disconnect, inspect for corrosion or bent pins, and reconnect firmly.
- Inspect for moisture:
- Look for water trails from the dispenser or top cover onto the control area.
- Dry thoroughly and correct any leaks.
- Visual inspection: Examine both boards for burnt components or cracked solder joints.
- Component swap: If available, test with a known-good display board. If communication still fails, replace the main control board.
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Repair Difficulty
Hard
4/5
Required Part
Display / User Interface Board
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