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I'm not sure what a thermal cut code is.
I get an external lock-out after re-tries are exceeded (2 flashes). But LED goes back to Normal Call for Heat (flashing 2 times per second) once I remove power then turn back on which resets the control card.
When I jumpered directly to the solenoid from the transfer, and main burner ignited, I got a LED code for Flame Sensed When No Flame Should be Present (5 flashes).
Can you point to which relay is the culprit?
Can I obtain and replace the relay without too much trouble? I have the ability to properly solder. (Used to teach it...)
I would rather pay for and replace a relay, than spend $300 on a new board.
Well...I do understand. Makes sense to me from a liability perspective.
However, I'm sure you understand my position as well. :o) Replacing a relay is not rocket science...
I've got a detailed verbal circuit description. It just doesn't tell me where the 24 VAC comes from. It says only, "The control then switches 24 volts to its "MVL" and "MV COM." I figured it had to come from a relay rather than the IC itself. And the relay is switched by the IC.
Thanks for your help Billy. I'm still in the same boat. Unless I can figure out which relay the 24 VAC comes from, I will have to replace the entire board. Crazy.