My Thermador Pro Range reads 'Turn Knobs to Off'. But they ARE all turned to 'off'. Only 2 of the 6 burners now will turn on.

SOURCE: Thermador Gas Cooktop Won't Stop Clicking : SGC304RS

theres a part in the cooktop called a spark modual. replace it. when i goes bad the problem your having is what it causes

SOURCE: LP conversion for Thermador 4 burner range top

I have a Thermadore 6 burner gas cooktop PCG366E purchased January 08. I purchased the LP conversion kit, they only make one kit for all models. The instructions included with the kit were written for an older model and have not been updated by Thermador. The gas regulator is located next to gas inlet pipe. You have to get at it from above. Remove the 2 star burners over that side of the cooktop. You will need a 20mm socket to remove the nut at the center of the star burner. Lift it off and disconnect the wire to the ignitor ( You need to push on the spring lock in order to seperate the the connector terminal). Remove the stainless steel pan and then remove the metal pan underneath ( you will need a Torxs bit for this screw or vise grips). You should now see the regulator. At the top of the regulator is a cap with the letters NG visible. Twist this a 1/4 turn ccw, lift up and turn over to expose the letters LP reinsert. The regulator is now ready. You will need to replace the orifice tips at each burner. Use a 7mm socket with an extension. Put a piece of tape in the socket to hold the orifice in place while you insert it. You also need to adjust the valves. You must pull off the knobs and and remove the trim bezel. If you look through the screw hole on the right you will see a screw head (bypass screw). Insert long skinny flat blade screwdriver through the hole and turn the screw CW all the way (about 1/4 to 1/2 turn in my case). My cooktop had two burners with a low simmer feature, This devise is located in front of the bypass screw. It has a hole in it but does not align well with the head of the bypass screw and makes it difficult to turn the scew. Thats it, I hope this info has been helpful. I have not yet connected the propane therefore have not tested the unit but it should work.

SOURCE: old Thermador cooktop continues to spark even after turned off

sounds like you have a bad switch. maybe on the large burner.. some of those switches can be replaced without the whole harness.

Bailey's Appliance Service

• 222 Answers
• Posted on May 02, 2009

SOURCE: dog turns burners on

You can use either a rolled up newspaper to stop the dog or go to this site for child safety items.

http://www.123safe.com/cgi-bin/SoftCart.exe/scstore/p-1032332AK.html?E+scstore

http://www.shop.com/+-a-child+locks+for+gas+stove+knobs-p127480814-g1-k24-st.shtml

http://www.kidproteq.com/Home-Safety/Kitchen-Safety/Clear-View-Stove-Knob-Covers-p189.html

SOURCE: Burner Knobs stcuk/can't turn

I had the same issue.
Take the lid assembly off and remove the metal shield over the burner controls.
This will allow you to remove the black cover that you see on the front of the grill and will give you access to the burner controls behind the knobs.

there is an almost diamond shaped metal piece with a screw in the top and one in the bottom that the know shaft runs through.. take note how it is currently positioned and then remove the screws and the piece of metal will come off.. dont lose the spring or lock washer.

you will now have access to the valve which is your issue. i sprayed some liquid wrench and i used a large common head screw driver to "beak" the valve to allow it to turn. Test it so you know which position to return the valve to and then put it all back together.