Thermador PRG486GDUS - Oven/Range - Range Ignitors not Working

[Kevin1980]

Posted Thursday at 10:15 PM

Due to intermittent range ignition I have recently replaced the simmer controller (SQ05) as well as the spark re-ignitor on my 6 burner 1/3 2/3 range/oven made by Thermador.  The range/oven model number is PRG486GDUS.  The old spark re-ignitor was part 9902 204 20284 or 5060001712, but that part is no longer available.  I was told I needed to use a new spark Re-Ignitor, part #83.22000.016 or Model RI306 made by DEFENDI.  I needed to wire it directly since the old wire harness did not fit.  

Unfortunately, I can not get the ignitors to spark now.  I do get 120V on the front end of the re-ignitor on the appropriate switch terminal when the knob is turned on.  But, I only get about 15V at the other end.  So when I test the ignitor it is energizing when the knob is turned, but, only with 15V.

My question is : How many volts are required to spark the ignitor?  If it should be more than 15V (which I assume it is), then why would I not get a higher rating as it goes through the re-ignitor?

I have not been able to get a qualified repair tech to asses the problem and fix it.  Honestly it feels like I am a bit ahead of them on the issue.....

Any help would be appreciated.

[clazyact]

Hello Kevin,

I've got the same problem. Did you have any luck resolving the issue. Hate to trash a very expensive Thermador cooktop for lack of a replacement part.

 

Alan

[Kevin1980]

Hello Alan. Yes, sort of. I finally took the controller and the spark igniter to an electronic board repair guy. He indicated there had been some loose wires and fixed them. They work now, not great though since I replaced the ignitors  with an off brand as I could not get the originals. I have to check online to see if they are available now.