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Old 04-29-2010, 01:14 PM   #1
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Problem with GMAT090-3 gas furnace


I have a gas furnace GMT090-3 80%. When I turn the heating on there is the regular motor sound but no ignition. The LED in the board flashes 3 times which is for "pressure switch failure to close" and tells me to check "venter pressure switch venter blockage". I have checked the hose between inducer motor and pressure switch and looks good, also the vent hose looks good. The inductor motor is not turning on. Is the inductor motor defective? If yes, how can I check for it? Or may it be the board that is defective? Any other idea on what can be wrong having these 3 flashes in the LED? Thanks


Last edited by amx13; 04-29-2010 at 01:53 PM. Reason: Wrong product name in title
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Old 04-29-2010, 04:44 PM   #2
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Problem with GMAT090-3 gas furnace


Check to see if its getting voltage.

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gas furnace problem, goodman, inductor motor, pressure switch


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