La Cornue Thermal Expansion Noise / Loose Components

Oven makes loud banging or popping noises during heating or cooling.

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Possible Causes

Metal panels expanding and contracting, Loose oven racks or accessories, Warped bake tray or drip pan, Loose mounting screws on internal panels

How to Fix / Troubleshooting

Safety first: Allow the oven to cool before tightening screws or adjusting panels.

  • 1. Isolate source: Remove all racks, trays, and accessories, then run a short heating cycle. If noise disappears, the issue is with removable items.
  • 2. Check racks and trays: Ensure racks are properly seated and not warped. Replace any severely warped accessories.
  • 3. Tighten panels: With the oven cool, remove interior panel screws (rear, side, or top liners) and retighten them to reduce movement. Also check external trim screws.
  • 4. Normal expansion: Some mild popping from metal expansion is normal, but very loud or new noises after years of use may indicate a panel has shifted and needs adjustment.
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Repair Difficulty

Easy 2/5
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