Thermomix Electrical Short or Earth Leakage

Thermomix trips the household circuit breaker or RCD when plugged in or when starting a 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

Shorted heater element to chassis, Damaged mains cord or plug, Moisture inside base causing leakage to earth, Shorted components on main PCB

How to Fix / Troubleshooting

Safety first: Do not repeatedly reset the breaker. Unplug the Thermomix immediately and keep it unplugged until inspected.

  • Check cord and plug: Inspect for visible damage. Do not use the appliance if the cord or plug is compromised.
  • Drying (if moisture suspected): If the unit was exposed to spills, allow it to dry in a warm, dry place for at least 24–48 hours, then test on an RCD-protected outlet. If it still trips, discontinue use.
  • Professional insulation test: Earth leakage and shorts must be diagnosed with proper test equipment. Arrange service with an authorized technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Heater Block Assembly or Main Control Board or Power Cord
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