Hello, first I should tell you I was having a 3 blinking light code and my heater was not running which I NOW repaired,

I pitched the exhaust flute lower coming out from the inducer motor

Put a 90 degree elbow on the outside of my home because rain water was chocking my furnace GMNT080-4.

Cleaned out all rubber hoses for blockage

Sucked on the pressure valve tube and heard a "CLICK"

So the furnace is running great now but the code light is solid red I really don't want to fix what's not broken but what does this code exactly mean and what should I do about it. Thank you in advance

Look on the back of the blower motor access door for a diagram. The codes will be listed there. Goodman over the years used different circuit boards with different codes.