My goodman furnace works fine at all options. Ac works then turns off. Fan will not run at all. Replaced wire connectors on circuit board and all worked fine, then same issue, ran for couple days, then did not run. Light on the board is on with no blinking code indicating any problem. Seems to work when I replaced the black cool fan connect on board, but does not stay on.

Figured it out. The yellow wire pin on the face of my Hunter stat was not completely connected and therefore AC was not consitantly running. All is running, good timing with heat wave.