Scott Lurndal wrote, on Tue, 23 Dec 2014 21:28:09 +0000:

http://www.bitscope.com/product/BS05/

I got an idea for a test of the "flame rod" from this video.
https://www.youtube.com/watch?featur...06j2CE#t=15 8

The guy shorts out a good flame rod, and the flames stop.

If I short out mine, during the flames, it should also stop the flames
quicker, and, if it doens't stop the flames right away, that would be
an indication that it's not doing anything.

Of course, either way, I still wouldn't know if the control board is
bad, but, it's worth a test to see what happens.

Also, I noticed his autopsy of a flame rod shows that there is apparently
*no connection* from the flame rod to the steel body of the flame rod.
https://www.youtube.com/watch?featur...06j2CE#t=18 6

So, it *is* a single-wire sensor!