Well, I guess it's no surprise. The 'defrost timer' control board on my Goodman heatpump went bad. I got the P/N from the board and ordered a replacement. (ICM318C)
Of course, it doesn't match. The new board has a 30/60/90 minute defrost timer setting that the old board doesn't have. The P/N is identical to the old board.
So, what's with the board? The terminals on the new board match the old one except for this timer setting.
Thanks all