F12
Fisher & Paykel Communication Fault Between Display Board and Power Board

Oven display shows F12 and the appliance may be completely unresponsive or stuck in standby.

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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) PCB, Faulty power/control PCB, Connector corrosion at low-voltage harness

How to Fix / Troubleshooting

Safety first: Turn off power at the breaker before accessing the control area.

  • 1. Access control area: Remove the top or front trim to expose the display board and main power board.
  • 2. Inspect harness: Locate the low-voltage harness connecting the display/UI board to the power board. Check for pinched wires, damage, or corrosion. Reseat both ends of the harness.
  • 3. Visual inspection: Look for signs of moisture or heat damage on both boards. If one board shows obvious damage, it is the likely culprit.
  • 4. Substitution (advanced): If available, substitute a known-good display board or power board to identify which board is faulty. This is typically done by a service technician.

Because this fault involves low-voltage communication circuits, accurate diagnosis often requires service documentation and test equipment. Professional service is recommended.

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Repair Difficulty

Hard 4/5

Required Part

Display Board (User Interface PCB)
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