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So I have been staring at my furnace for an hour now. I heard some noise come from the inducer motor, maybe some water on the fan blades? then as the furnace shut down the green light flashed several times while the red stayed solid. the burner went out the green light came back on solid and...

ok so I have been sitting here staring at my furnace for an hour or so. just before the furnace shut off I heard some noise coming from the inducer motor and I the green LED flashed half a dozen times while the red stayed solid. According to my book that means pressure switch open fault.

So I put my meter on that circuit and i was at about 24.5 v the furnace cycled 3 times in the course of raising the temp about 10 degrees.

I read in another forum on here to take the wire for the w terminal and put it on the r terminal to eliminate the stat as a potential problem. is this correct?

Correct, it shuts down before coming up to temp. I jumpered the stat and it was still shutting down. I think its a honewell, I'll have to double check. It was new with the furnace I'm not sure what a heat amp is. I'll check the W and C post on the board after work.

The blower does come on a minute or two after the burner ignites.

I have a Nordyne furnace 904639k kg7sc 038d-23a. The furnace was installed about a month ago in the horizontal position. When the furnace starts, it will run for usually 5-10 mins then the flame goes out. When the flame goes out the inducer runs for another 2? minutes then the blower motor...