Induction buzzing, cookware noise and a new mechanical sound

Notice whether the sound appears with one pan, several different pans or even after cooking has stopped. Record the cooking zone and heat setting from normal use. A brief description such as “a light buzz only with this pot on high” is more useful than a general report that the cooktop is loud.

Thermador describes some humming or buzzing from cookware as normal induction behavior. It also notes that the electronics cooling fan can continue after cooking. That does not mean every new sound should be ignored: a harsh scrape, repeated shutdown, damaged glass or a burning smell needs a different response. Stop using the appliance when those warning signs appear.

Do not heat an empty pan to create a comparison or lift the cooktop to inspect a fan. If there is no safety concern, existing observations about another compatible pan can help explain whether the symptom follows cookware or stays with one zone. Send the model, any displayed fault and a recording captured safely during the original event.

Useful observations before you call

• Identify whether the sound comes from the pan area, below the glass or nearby ventilation.
• Note whether heating remains normal or is interrupted at the same time.
• List cookware changes and any recent spill, cleaning or installation work.

Model-specific reference: Thermador owner support. Features and procedures vary; follow your appliance manual.