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MY GOODMAN HI EFFICIENT GAS FURNACE GMH950703BXA ,MAKE A CRAKING NOISE WHEN THE BURNER LIGHT UP AND IT GET LOUDER

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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.

Posted on Apr 07, 2011

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Let's trouble shoot a few possibilities:

Can you confirm that your gas pressure/ supply is correct-- by lighting all of the range top burners at the same time-- Do they all light quickly, and burn to full height, without much of any yellowing at the flame tips? That should indicate you have god gas pressure and supply.

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If it is only the main oven burner that is not lighting, are you able to remove the cover plate that covers it, and watch it light off? -- Any clues on whether or not the gas valve even open?

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Goodman furnace model # GMNT100-4B On vacation neighbor checked house house filled with gas. He shut off main and furnace. Came home turned on gas to everything except furnace. All good. Furnace will not...


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