Rollout safety tripped Reset Run tested furnace for a while to be sure its not a small heat exchanger crack opening up after extended run time Checked intake and exhaust venting: no ice or snow covering intake or exhaust pipes Blew out Condensate trap from both inlet lines Checked inducer outlet coupling elbow drain port for blockage Found the inducer was filling with water after a period of time Per Goodman tech support, added a trapped drain to the inducer Furnace operating normally at this time