La Cornue Oven Temperature Calibration Issue

Oven heats but temperature is inaccurate (too hot or too cold) without showing an error.

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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

Aging oven temperature sensor, Out-of-calibration mechanical thermostat, Poor rack placement or load affecting airflow, Incorrect user calibration settings

How to Fix / Troubleshooting

Safety first: Allow the oven to cool before making adjustments or accessing internal components.

  • 1. Verify with thermometer: Place an oven thermometer in the center of the cavity and compare readings at several set temperatures.
  • 2. Adjust user calibration: Many La Cornue electronic ovens allow temperature offset adjustment in the settings menu. Apply a small offset (+/− 10–20°C) to correct minor deviations.
  • 3. Check sensor: If deviations are large or inconsistent, test the oven sensor resistance at room temperature and replace if out of specification.
  • 4. Mechanical thermostat models: Replace the thermostat if the oven consistently overshoots or undershoots the set temperature despite proper preheat and load.
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Repair Difficulty

Medium 3/5

Required Part

Oven Thermostat
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