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Old 10-05-2012, 04:54 PM   #1
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goodman furnace won't stay fired


I have a goodman updraft furnace, model gmvc80704bx. Occasionally, when it ignites, it only stays ignited for a few seconds, from 2 seconds to 10. It will continue to fire with the same results, until it shuts down completely. Most of the time it fires normally. Any ideas?

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Old 10-05-2012, 05:06 PM   #2
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goodman furnace won't stay fired


Next time it does it, look for the error code, and see what error it is.

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Old 10-05-2012, 05:11 PM   #3
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goodman furnace won't stay fired


error code 88 with 2 red flashes. It only happens once then returns to "OP" with a green flashing light.
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Old 10-05-2012, 05:17 PM   #4
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goodman furnace won't stay fired


ok now I'm getting an E2 message which indicates a low pressure switch stuck open
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Old 10-05-2012, 05:18 PM   #5
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goodman furnace won't stay fired


Probably some moisture in the hose or switch. Could also be a build up of corrosion at the ports whee the hose attaches.
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Old 10-05-2012, 05:19 PM   #6
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goodman furnace won't stay fired


do you have a manual?
is there a trouble shooting section?

Last edited by christoff; 10-05-2012 at 05:20 PM. Reason: posts were not up when i made my post
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Old 10-05-2012, 05:26 PM   #7
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goodman furnace won't stay fired


I just tapped on the low pressure switch and it fired normally. I'll try to clean the hoses and keep an eye on it.

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