Question about Thermador RDDS30 Dual Fuel (Electric and Gas) Kitchen Range
The left rear burner does not work and it is not the electronic igniter as there is spark there. The burner is not getting gas. All the other burners work fine.
I have the same problem and just took the cooktop apart to investigate. I disconnected the solenoid lines from the simmer controller (that is located under a metal guard to the right side under the burners) and checked them with an ohmmeter. It reads an open circuit, which suggest the solenoid is bad. When I turn the control knob on, I also read about 100V DC on the corresponding solenoid terminals of the simmer controller. I was surprised it was that high for a DC voltage, does anyone know if that is correct? I would hate to spend $90 on a replacement solenoid valve and then have it blow because the controller is putting out too much juice.
Posted on Feb 20, 2007
My middle rear XLO burner is not working. You can order a Thermador simmer control kit with 2 XLO potentiometers and the ignition control module for about $200 or individual potentiometers for about $20. You have to take the top off to replace these. The potentiometers fit around the valve stem below the knobs. They probably got liquid in them when you took off the knobs to clean. It may be possible to clean the contacts on the old one. New, improved part is Bosch #422748 potentiometer for most models with XLO burners. Don't mess with the gas lines and solenoids.
Posted on Jun 19, 2009
I have the same problem. Left rear burner, no gas. It is the XLO burner. I think its one of 3 things as mentioned below a) Burner Valve b) Bad gas solenoid or Bad gas controller. Not sure how to get started....Any help would be greatly appreciated.
Posted on Jan 30, 2007
There's really only three things this could be if the spark igniter is working. The burner valve is broken internally and not letting gas through, or the burner cap is not on correctly and so the gas mixture is wrong and won't ignite. Usually the burner top just gets set askew and needs to be righted so the burner can work properly. If in fact there is no gas at all coming out, you will need to replace the burner valve. The third thing it could be is only if you are having this problem on one of the burners has the X-LO feature (turns the flame on and off in simmer mode) it could be a bad gas solenoid, or controller. These X-Lo systems are quite complicated and it may be worth your time to pay a thermadore servicer to check it out if its not a simple fix. Hope this is of some help.
Posted on Dec 21, 2006
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Posted on Jan 02, 2017
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Hello bdrillbit - Is the electronic igniter aligned properly? Ensure that tip of spark igniter is aligned with metal point or "nib" located on underside of burner cap after the burner mounting screws have been tightened. (Not all burners having mounting screws). When the burner control knob is set to the "LITE" position do the igniters spark? Can gas be heard or smelled coming from the burners when the control number is turned on? However, if you smell gas, I highly recommend turning the unit and the gas off if you can reach it and contact your gas provider. The range itself does not have a switch or regulator to relight it. Keep in mind that it may be experiencing an issue with the spark module, electrodes, wiring or EOC.
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