Liebherr Electrical Short or Earth Leakage

Oven trips the household circuit breaker or RCD when turned on or when a specific function is selected.

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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 heating element to chassis, Damaged mains cable, Moisture in wiring or elements, Faulty filter or suppression capacitor

How to Fix / Troubleshooting

Safety first: Do not repeatedly reset a tripping breaker; this indicates a potentially dangerous fault. Disconnect the oven and leave it off.

Diagnosis (advanced):

  • With power disconnected, visually inspect the mains cable and terminal block for damage.
  • Test each heating element for insulation resistance to earth using a megohmmeter if available; replace any element with low insulation resistance.
  • Check for moisture inside the oven or on wiring, especially after steam cooking; allow to dry thoroughly.
  • Inspect the mains interference filter for signs of burning or cracking; replace if damaged.

Because of shock risk, insulation and earth leakage testing should be performed by a qualified technician.

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Repair Difficulty

Professional Required 5/5

Required Part

Lower Bake Heating Element
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