F4
Etna Oven Door Lock or Door Switch Fault (mainly on pyrolytic/self-clean models)

Etna oven shows F4 and will not start a cooking program.

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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

Defective door lock motor, Misaligned door latch, Faulty door closed switch, Broken wiring to lock assembly

How to Fix / Troubleshooting

Safety: Disconnect power before working on the door lock mechanism.

  • Check door closure: Ensure the oven door closes fully and the latch engages smoothly. Adjust hinges if the door is sagging.
  • Listen for lock motor: Start a self-clean or lock test (if available). If you do not hear the lock motor, it may be faulty or not receiving power.
  • Inspect lock assembly: Remove the top or rear panel to access the lock. Check for broken plastic parts, seized linkage, or burnt motor.
  • Test door switch: Use a multimeter to verify continuity of the door closed switch when the door is shut.
  • Replace faulty components: Install a new door lock assembly or door switch as needed.
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Repair Difficulty

Hard 4/5

Required Part

Oven Door Lock Assembly
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