Have installed a new igniter --- when plugged back in unit just runs and runs with no heat. Reference on heater says to reset by pushing red button, but can't locate it. Is a Nordyne 624591-B unit.

The only reset button I am aware of is located in the middle of the high limit control. You can locate that by looking at the wiring diagram on the back side of your furnace blower compartment door or other location on the furnace. I will say this much I have no idea why you would have to push that button to start with since it has nothing to do with the ingitor not working.

Check the shelf to the left side of the blower.

Well I have a similar problem right now.. its only blowing cold air and the led light on the circuit board is constantly blinking. New thermostat and igniter.

Need to reset? Or is there another problem?
Anyone know?