Thermador Gas Cooktop Repair Guides

First identify what is stuck on the Thermador gas cooktop: the removable burner cap, the heavy grate, the control knob, or the burner base. Turn the cooktop off, remove cookware, and wait until everything is completely cool.

A brief click while a burner ignites can be normal, and a Thermador ExtraLow burner may click as its flame cycles on and off. Clicking that continues with the knob off, repeated sparking after the knob is released, a bang or delayed ignition, or a hiss should be treated as a fault.

If a Thermador gas cooktop is not heating, first turn the affected knob off and decide whether there is no flame, a weak or uneven flame, or a flame that lights but does not deliver normal heat. With no gas odor or other danger sign, confirm the main gas supply and appliance power, then let the cooktop cool before checking that the burner cap and head are correctly seated, dry, and free of blocked ports.

If a Thermador gas-cooktop burner will not ignite, first turn the knob off and decide whether there is any gas odor, hissing, delayed ignition, a pop, smoke, or an abnormal flame. If so, stop using the cooktop, avoid flames and electrical switches, leave the area as appropriate, and follow local gas-emergency guidance; do not keep trying to light it.

If a Thermador gas cooktop will not turn on, first separate no power or no spark from a burner that sparks but does not light. From a cool, dry cooktop, check that the unit is plugged in and its breaker has not tripped, then confirm the main gas supply is on.

When a Thermador gas cooktop is not working, first identify whether every burner is affected or only one, and whether you have power, clicking or sparking, gas flow, and a stable flame. Check only external items: the plug or breaker, the gas shutoff, cooled and correctly seated burner caps, dry and clear igniters and ports, and drafts.

A hot pan, grate, or cooktop surface can remain hot after a normal high-heat setting, but a flame that stays too large when turned down, will not shut off, has an abnormal color or shape, or heats nearby controls or surfaces unexpectedly is not normal. Turn the affected control off immediately.

A gas smell from a Thermador gas cooktop is not a normal DIY adjustment. If the odor is strong, persistent, present while the cooktop is off, returns after ignition, or comes with hissing, stop using the cooktop, leave the building with people and pets, avoid flames, switches, appliance controls, phones, plugs, and vehicles in the odor area, and call 911 or the local gas utility from a safe location.

Some sparking is normal while a Thermador gas cooktop is being turned on, and ExtraLow® models may click as the flame cycles. Sparking that continues with every control in OFF, persists after a burner is lit, or is accompanied by gas odor, smoke, arcing, or an abnormal flame is not a normal cooking sound.