Thanks for the info and I agree that the chuff is from the cruise board as there is no switch for the chuff. I understand from the owner that the smoke did not puff but had a constant smoke so there is no diode in the system. I removed a wire from pin 17 on the R2LC and used it to temporarily install a reed switch and the chuff is working. So now I know at least I can use a mechanical switch to get a chuff but that doesn't make it right. How do I know if the new motor driver board is programmed for a chuff?
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