Gas Cooktops and Rangetops

Cleaning & Care

How to clean the grates.

Remove all pots, pans, and utensils. Turn off the cooktop. Remove grates once they have cooled down. Grates are heavy so use care when handling them. Use a mild cleaner to clean the grates with a soft cloth, rinse and then dry. Blisters and chips on grates are common due to their exposure to extreme temperatures and rapid temperature changes. Acidic and sugar-laden spills deteriorate the enamel, so remove these spills as soon as safely possible. Abrasive cleaners can mar the grates. Do not clean grates in a self-cleaning oven.

How to clean the burner cap.

Remove all pots, pans, and utensils. Turn off the cooktop. Remove grates once they have cooled down. Grates are heavy so use care when handling them. Use hot, sudsy water with a soft cloth, rinse and then dry. Non-abrasive cleaners and liquid cleaners may also be used. Dry the burner cap thoroughly after cleaning. Do not soak burner caps.

How to clean the gas igniters.

After the igniters have cooled down, carefully wipe the igniters with a cotton swab dampened with water. Gently scrape soil off with a toothpick. Avoid exposing the igniters to excessive water, as a damp igniter may not light up. Remove any lint that may remain after cleaning.

How to clean the control knobs.

To remove knobs, simply pull them straight forward. Use hot, sudsy water with a soft cloth, rinse and then dry. Do not soak the knobs or use abrasive cleaners and scrubbers.

How to clean and season the griddle.

Wash with warm, soapy water. Rinse thoroughly and dry with a soft cloth. To season, spread a small amount of vegetable oil evenly while heating (avoiding corners). When the oil begins to smoke, turn it off. Repeat this process two more times and re-season as needed. Seasoning will help protect the griddle from rusting and prevents foods from sticking to the surface during cooking.

How to clean the grill.

Burn the grease off the briquettes using the HI setting. While the grill grate is still hot, use a wire brush dipped in hot water to remove the soil from the grate.

I ordered the wood block accessory cover for the griddle. How do I protect it from absorbing stains?

Protect the wood from harboring soil and bacteria by applying unscented mineral oil to the surface. Use small amounts of oil and repeat until the surface does not allow soil to penetrate. Do not use any other types of oil for this function as it will turn rancid over time. Reapply after scrubbing with detergent and hot water.

How to clean stainless steel surfaces.

Clean stainless steel areas by using mild, soapy water with a soft cloth. Wipe in the direction of the stainless steel grain when washing and drying. Rinse with water and wipe dry to avoid watermarks. Do not use cleaning agents that are abrasive or contain chlorine since both are corrosive to stainless steel. For added shine, apply stainless steel conditioner and wipe off excess with a soft cloth.

Warning: Stainless steel conditioners and cleaners can have negative effects on materials other than stainless steel. Do not apply stainless steel conditioners and cleaners to control labels, logos, or black stainless steel.

The Thermador Stainless Steel Conditioner (part # 00576697) is available for purchase in the online Thermador Accessories Store > . View the Thermador YouTube Channel to learn how to clean stainless steel .

How to clean the porcelain surface of the gas cooktop.

Immediately wipe up acid spills like fruit juice, milk and tomatoes with a dry cloth. Do not use a damp sponge or cloth on hot porcelain. When the oven is cool, clean it with hot, soapy water and a soft cloth. Rinse and dry. It is normal for porcelain to show fine lines with age due to exposure to heat and food.

How to clean the painted surface of the gas cooktop.

Wash with hot, soapy water and a soft cloth. Rinse and dry. Do not use powdered cleaning agents, steel wool pads, oven cleaners, and other abrasive cleaning materials.

Usage & Operation

The gas burner does not start.

Make sure the gas shut off valve is in the ON position and the gas supply is on. The burners must be positioned properly. Check to see if there are any food debris in the burner ports and clean as needed. The igniters also must be clean and dry for the burner to start. Check the power supply and make sure the unit is plugged in and the circuit breaker has not tripped.

It is hard to ignite the gas rings – burners are not igniting or there is a constant clicking sound.

There are several solutions to this problem:

  • The igniter ports may be dirty. Carefully wipe the igniter with a cotton swab dampened with water after the igniter has cooled down. Gently scrape soil off with a toothpick. Avoid exposing the igniters to excessive water as a damp igniter may not light up. Remove any lint that may remain after cleaning.
  • Ignition will be quicker if a cooking pan is in place on the grate. Ignite the gas at full and once alight, turn down to around 50%. It should lock on within 6 seconds.
  • The main gas supply may not be turned on. Make sure it is turned on.
  • Does the burner click when the burner knob is in the ON position? If yes, you may have a wiring issue at the outlet that the appliance is connected to. Turn off the main gas supply and contact a qualified electrician to fix this.
  • Does the burner click when the burner knob is in the OFF position? If yes, check for the following:
    • 1. Burner caps are properly placed and the igniter is not wet or dirty.
    • 2. Check to see if the regulator supplied with the unit is installed properly. The arrow on the regulator should be pointing to the appliance. Please call a professional installer or schedule a service visit if the regulator has not been installed properly.

The ignition spark operates continuously.

There are several solutions to this problem.

  • The knobs may be in the LIGHTING/SPARK position. Turn the knobs to the OFF position.
  • Make sure there is no draft in the room. Select models have a re-ignition function, which is part of the flame recognition feature. The re-ignition function will attempt to reignite a flame that has been blown out or disturbed.
  • This may be caused by the presence of water due to cleaning the cooking surface with excess water or water boiling over onto the cooking surface and entering the appliance. This problem will cure itself once the cooking surface dries out.
  • If you have tried all of the above and the problem continues, you will need an authorized service technician to dismantle the appliance and repair it. You should never attempt to dismantle a gas appliance unless you are officially qualified to do so. Please schedule a service visit .

For cooktops purchased after September 2018, the ignition spark operates continuously if a knob is held down past the child lock position.

There is intermittent sparking.

The ceramic igniters are wet or dirty. Carefully dry or clean the igniter. Intermittent sparking can also happen if the burner ports are clogged. Clean the ports on the burner cap with a wire, a needle, or a straightened paper clip. Intermittent sparking can also be caused by air movements or gusts in the room. Make sure there is no draft in the room.

The igniters spark even though the cooktop is turned off.

When the electrical power connection has been activated at the first power up or reconnected after an outage, the igniters may spark once or twice even though the cooktop is off.

The burner flame goes out unexpectedly.

Make sure there is no draft in the room.

The flames are too high or are uneven.

There are several solutions to this problem.

  • The burner caps may not be installed properly or may have been moved. Make sure the burner caps are properly positioned.
  • The regulator supplied with the unit may not be installed. Please ask your professional installer to install it or schedule a service visit.

My gas burners have the automatic re-ignition feature. Occasionally, one burner will not light while all the others do light.

The burner cap is out of alignment. Adjust the cap so that the tab fits into the notch in the burner base.

The burner keeps making a clicking sound.

There are several solutions to this problem:

  • The burner caps have been moved. If so, make sure the burner caps are properly positioned.
  • The burner ports may be wet or clogged with food particles. Make sure the burner port is dry and clear clogged burner ports with a wire or straightened paper clip.
  • Igniters may be damp. If so, dry the igniters with a dry cotton swab and remove any lint that remains after drying.
  • The gas shut-off valve may be off. Check to make sure it is on and that the gas supply to the building is not off.

For cooktops purchased after September 2018, the ignition spark operates continuously if a knob is held down past the child lock position.

There is a gas odor coming from the cooktop.

There are several solutions to this problem:

  • The burner knobs may not be completely turned off. Turn the knobs to the OFF position. If the smell does not disappear, turn the main gas supply off and schedule a service visit > .
  • It is normal to smell gas for up to four seconds after igniting the burner. The smell will go away after you ignite the burner. If the smell does not go away after ignition, turn the main gas supply off and schedule a service visit > .

Overtime, the grates become shiny.

This is caused by using inexpensive, non-coated, aluminum pans on the grates. The texture of the grates can remove bright, shiny aluminum from the pan because the pan is non-coated. The shiny aluminum fills in areas on the grates and makes the grates shiny. There is nothing wrong with the grate.

If you use non-coated, bright, non-colored, aluminum pans on the grates, try to gently clean off the shiny spots with a clean, new Scotch-Brite abrasive pad or a coarse, steel wool pad.

What is the Star™ Burner?

It is a 3-in-1 burner that is exclusive to Thermador and features high performance, 5-point design, and ExtraLow® burner capability. The Re-engineered Star™ Burner provides unsurpassed flame spread, faster time-to-boil, and rapid recovery time. Designed in a star shape, it provides more even heat to your cookware.

Why would I need ExtraLow®?

To keep a consistent or low simmer, which prevents your food from burning or scorching.

What are the BTU levels of Thermador gas cooktops/rangetops?

The BTU levels vary depending on the model. Thermador's Professional® Series of ranges and rangetops have a higher amount of BTUs than Thermador Masterpiece® Series gas cooktops.

The food is cooked unevenly.

There are several solutions to this problem:

  • The base of the pan may be warped. Use a different pan.
  • Make sure to place the pan over the center of the burner so the heat is evenly distributed.

Can an oven be installed below a gas cooktop?

Any Thermador oven can be installed below any Thermador gas cooktop. The following standards are required for installation:

  • Countertop height of 36”
  • Toe kick height of 4.75” (includes base plate)

It is not possible to install a Thermador oven below a rangetop.

Please refer to the installation manuals for the cooktop and oven for additional information on feasibility.

Do I need ventilation over the cooktop?

Yes, all cooktops need ventilation.

Accessories

What kinds of accessories are available for my cooktop/rangetop?

Accessories such as pots and pans are available for your cooktop/rangetop. Refer to your owner's manual to learn what accessories can be purchased for your cooktop/rangetop.

Accessories can be purchased at your dealer or in the Thermador online accessories store > .

Cleaners such as stainless steel conditioner and cleaning cloths can also be purchased in the online Thermador Accessories Store > .

Where can I purchase accessories for my cooktop?

Accessories can be purchased at your dealer or in the online Thermador Accessories Store > .

How can I find out which accessories go with my cooktop/rangetop?

Refer to your owner’s manual. If you do not have an owner's manual, you can download it here > .