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Customer Questions and Answers for Cooktop Spark Igniter Switch by Bosch

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Manufacturer Part
4.89 (64)
By: Bosch
Part Number: OEM8464800
Manufacturer Part Number: 00189008

Burner won't spark or ignite? This spark switch signals the ignition module to light gas burners. Common DIY repair with basic tools, 15-30 minutes.

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Questions & Answers

For Bosch Cooktop Spark Igniter Switch (Part Number: OEM8464800)

Mahnrut for Model Number Thermador RDSS30

1) is Thermador now owned by Bosch as those parts seem to come up 2) one of our non-Lo burners does not spark but gas is there and it can be lit by match. Over the years (20?) we have had issues with this much used burner but with close attention to cleaning (now it is spotless) we have managed to get it going (never a problem with gas supply). Do you think the spark switch needs changing? Hate to spend a lot for this repair professionally as such an old stove but otherwise in excellent condition. Thanks.

1 Answer

Mahnrut,

You will want to check the ignition switches and make sure that the switch has continuity in the light position. If this checks ok then the issue will most likely be a faulty spark module or the igniter is faulty.

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1 Answer

Hello Allen,
You will need to install a simmer control kit 00497234 to replace both the spark switches and the simmer control. They all have to be replaced at the same time since the new design parts are not compatible with the old ones and if all are not replaced, there will still be an issue.

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1 Answer

Hello Wheezy. Yes, you can replace the spark switches in the unit. As for your issue, if it is sparking, and not lighting, try cleaning the burner and see if that helps the unit.

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1 Answer

Hello Rancher,

You will have to remove the unit from installation and remove the burners and control knobs. There will be screws around the perimeter of top that you will remove to release top. Once top is off you can replace the spark switch.

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1 Answer

Tom, You will need to test and or replace the potentiometer 00497246 and the gas tube solenoid 00423022. If either is faulty, there will be no gas allowed to the burner assembly, and it won't ignite, even though the spark igniter works.

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1 Answer

Hello Thayer. Check and see if the knob 00415364 is broken or cracked and is not turning the valve to start the gas and spark.

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Puffy for Model Number Thermador Model # SGSX456ZB (6 burner

I have owned this Thermador cooktop for 8 years. I now have a burner that does not light. It is the left center star unit. The piezo ignitor became intermittent but it would eventually spark and ignite. We cleaned the burner with soap and water and now it quit sparking altogether. I have touched the piezo and I can still feel a small shock (tingle) when I turn the burner on but it isn't strong enough to send a spark. Can you determine if I need a new Switch, spark, Bosch Part Number: AP2821597? Thank you...lighting via BIC lighter

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