MY GOODMAN HI EFFICIENT GAS FURNACE GMH950703BXA ,MAKE A CRAKING NOISE WHEN THE BURNER
LIGHT UP AND IT GET LOUDER
Is it a cracking noise or does it sound more like metal stress (expansion & contraction)? If it's metal expansion, there may be a loose duct connection or strapping. If it's not metal expansion and contraction, check the burners for cracks, due to humidity dripping on them. If that's the case, obviously, they will need to be replaced. But, the question then is, where is the over production of humidity coming from. Is the Condensator pump not working properly or is the drain clogged up?
These are the thinkgs you need to check first.
Hope this helped you troubleshoot the problem.
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