F5
Thermador Door Lock Switch or Motor Error

Oven displays F5 and may not enter or exit self-clean.

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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, Faulty lock position switch, Misaligned latch mechanism, Broken wiring to lock assembly

How to Fix / Troubleshooting

Safety first: Disconnect power before working on the lock system. Beware of sharp edges.

  • Check door alignment: Ensure the door closes squarely and the latch engages smoothly. Adjust hinges if necessary.
  • Manually operate latch: With the top panel removed (power OFF), manually move the latch to locked/unlocked positions and listen for switch clicks.
  • Test switches: Use a multimeter to verify continuity of the lock switches in each position. Replace the lock assembly if switches are faulty.
  • Motor test: Apply appropriate voltage to the lock motor (only if you are qualified) to confirm operation. Replace if it does not run.
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Repair Difficulty

Hard 4/5

Required Part

Door Lock / Latch Assembly
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