F12
Hotpoint-Ariston
Display to Main Board Communication Fault
No display or dead control panel, but internal light may work; F12 sometimes logged as communication error between display and main board.
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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
Failed display PCB, Loose or damaged display ribbon cable, Faulty main control board communication circuit, Moisture or corrosion on connectors
How to Fix / Troubleshooting
Safety first: Unplug the dryer before removing the control fascia.
- Check power: Confirm that the dryer is receiving mains power and that the internal drum light (if fitted) operates when the door is opened.
- Inspect display connections: Remove the control panel and inspect the ribbon cable and connectors between the display PCB and main board. Reseat and ensure they are fully engaged.
- Look for corrosion: Any signs of moisture or corrosion on the display board or connectors indicate the need for cleaning (with appropriate electronics cleaner) or replacement.
- Substitute display: If available, test with a known-good display module. If the new display works, replace the original display PCB.
- Replace main board: If the display is known good and cabling is intact, the main control board may be at fault and require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Display PCB / Control Panel
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