La Cornue
No-Heat Condition Without Fault Code
Oven is not heating at all (no error code displayed); interior light and clock work.
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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
Tripped thermal cutout, Open bake and broil elements, Faulty mechanical thermostat (non-electronic models), Loose connection at power terminal block
How to Fix / Troubleshooting
Safety first: Disconnect power at the breaker before removing any panels. High voltage is present at the terminal block and elements.
- 1. Check power supply: Verify that both legs of the supply (L1 and L2) are present at the terminal block. A missing leg can cause lights to work but no heating.
- 2. Inspect thermal cutout: Locate the high-limit thermostat or thermal fuse on top of the oven cavity. Test for continuity. Replace if open.
- 3. Test elements: Measure resistance of both bake and broil elements. Replace any open element.
- 4. Mechanical thermostat: On La Cornue models with a mechanical oven thermostat, verify that the shaft turns smoothly and that the thermostat contacts close when calling for heat. Replace if defective.
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Repair Difficulty
Hard
4/5
Required Part
High-Limit Thermostat
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