How to Fix / Troubleshooting

Safety first: If you see smoke or smell strong burning, stop the microwave immediately, unplug it, and open windows for ventilation.

Step 1 – Inspect interior: After cooling, check for burned food, splatter, or packaging. Clean the cavity thoroughly.
Step 2 – Check vents: Ensure all intake and exhaust vents are clear of dust and obstructions.
Step 3 – Internal inspection (qualified persons): Remove the cover and look for discolored or melted wiring, burned connectors, or scorched components.
Step 4 – Replace damaged parts: Any burned wiring harnesses, connectors, or components (fan, magnetron, transformer) must be replaced with Thermador OEM parts.
Step 5 – Test carefully: After repair, run the unit with a cup of water and monitor for any unusual smells.

Warning: Do not continue using a microwave with persistent burning smells; risk of fire is significant.

Microwave has a burning smell, electrical odor, or smoke during or after use.

Possible Causes