C14
Thermomix
General Safety Interlock / System Protection Error
C14 error is displayed and the Thermomix refuses to start any program involving heating or motor operation.
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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
Multiple sensor disagreement (temperature, lid, bowl), Internal firmware safety lock, Faulty safety relay on main PCB, Wiring harness fault causing inconsistent signals
How to Fix / Troubleshooting
Safety first: Disconnect from mains for several minutes before attempting a reset.
- Full reset: Unplug the unit for 10 minutes, then plug back in and power on. This can clear transient safety lock conditions.
- Check all safety conditions: Ensure the bowl is correctly seated, the lid is properly locked, and the measuring cup is in place if required by your model.
- Inspect for moisture or spills: Look for signs of liquid ingress around the lid, control panel, and base. Allow the unit to dry thoroughly (24 hours) if any moisture is suspected.
- Service recommendation: Persistent C14 indicates a deeper safety system or PCB fault. Do not attempt to bypass safety circuits; contact an authorized service center.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (Safety Circuitry)
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