What is your appliance doing?
An induction pan isn't detected
Say whether that pan worked on the same zone before and whether the problem affects other zones. Check cookware guidance in the exact model's manual.
The controls appear locked
Note the displayed symbol and consult the owner's control instructions. Avoid a button sequence intended for a different Thermador cooktop.
Ignition doesn't complete normally
Tell us which gas burner is affected and stop using it. Repeated ignition attempts are not a useful preparation step.
What the repair assessment needs to establish
A repair assessment needs to distinguish normal control settings and cookware compatibility from a heating or electronic fault. If the whole surface is unavailable, that is different from a single failed zone. Model identification determines which checks apply.
Before your service visit
For a Burlington visit, clear the cooled surface and describe access beneath the counter. Do not lift the glass or disconnect gas or electrical supply connections. Report a cracked surface before attempting further cooking.