F26Serious
Miele Washer F26 Error Code
The door lock mechanism's PTC (positive temperature coefficient) heater or switch is faulty.
Common causes
- Faulty PTC element in lock
- Stuck lock mechanism
- Wiring issue
How to fix it
- Check door closes properly
- Listen for locking click
- Test lock resistance (PTC should be low resistance when cold)
⚠ When to call a pro: If lock does not operate, replace door lock assembly.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.