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HWB 03-15-2013 06:46 PM

Goodman GMP100-3
My furnace does got come on it just makes a humming noise?

how 03-15-2013 06:58 PM

You should have a blinking diagnostic led light on the board and a legend on the inside of the furnace doors that will translate it all into something useful.
Check out if there is a viewing port on the furnace doors to look for that led light without having to open up the furnace.

beenthere 03-16-2013 03:27 AM

You should also check your heat exchanger. It may have popped crimp rings.

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