F12
La Cornue Heating Circuit Short to Ground

Electric oven trips the circuit breaker when heating is started.

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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 bake or broil element to chassis, Damaged wiring insulation near hot surfaces, Faulty terminal block with arcing, Moisture inside electrical compartments

How to Fix / Troubleshooting

Safety first: Do not repeatedly reset a tripping breaker. Disconnect power and investigate the cause before using the oven again.

  • 1. Visual inspection: Remove the oven racks and inspect the visible portions of the bake and broil elements for cracks or areas where the metal sheath has split and may contact the cavity.
  • 2. Check rear wiring: Remove the rear panel and inspect wiring to the elements and terminal block. Look for burned insulation, melted connectors, or signs of arcing.
  • 3. Test elements to ground: With wires disconnected from the elements, use a multimeter on the highest resistance range to measure between each element terminal and the metal chassis. Any measurable continuity indicates a shorted element that must be replaced.
  • 4. Inspect terminal block: Check where the power cord or conduit connects to the oven. Tighten loose screws and replace any burned lugs or the entire terminal block if damaged.
  • 5. Dry moisture: If the oven was recently cleaned with excessive water or steam, allow it to dry thoroughly before retesting. Moisture can cause temporary shorts.
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Repair Difficulty

Hard 4/5

Required Part

Bake Heating Element
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