F12
Hotpoint-Ariston
Communication Error Between Display Board and Power Board
Display shows F12 and oven functions are disabled; often indicates communication failure between boards.
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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 harness between display PCB and main PCB, Damaged communication cable, Faulty display board, Faulty main control board
How to Fix / Troubleshooting
Safety first: Disconnect mains power before accessing internal components.
Step-by-step checks:
- 1. Access control area: Remove the top or front panel to expose both the display board and main power board.
- 2. Check connectors: Locate the multi-core harness linking the two boards. Unplug and replug both ends, ensuring a firm connection.
- 3. Inspect cable: Look for crushed, cut, or burnt sections of the cable, especially where it passes near metal edges or hinges.
- 4. Visual board inspection: Check both boards for obvious damage or corrosion around the communication connectors.
- 5. Replace suspect board: If reseating and inspecting the cable does not clear F12, replace the display board first (most common), then the main control board if the fault persists.
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Repair Difficulty
Hard
4/5
Required Part
Display / Interface Board
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