F12
Indesit Communication Error Between Main PCB and Display/Control Board

Indesit dryer displays F12, no response from buttons or LEDs may be frozen

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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

Disconnected or damaged communication harness, failed display board, failed main control board, corrosion on connectors

How to Fix / Troubleshooting

Safety first: Disconnect the appliance from mains before removing any covers.

Communication line checks:

  • Access control boards: Remove the top cover and front control fascia to expose both the main PCB and the display/UI board.
  • Inspect connectors: Unplug and replug the multi-pin connectors between the boards. Look for bent pins or corrosion.
  • Check harness continuity: Use a multimeter to verify continuity of each wire in the harness. Replace the harness if any conductor is open.
  • Visual inspection: Look for burn marks or component damage on either board.

Resolution: If wiring is intact and F12 persists, either the main PCB or the display board is defective. Replacement of one or both boards may be required and is best done by a qualified technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Display / User Interface Board
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