Question about Goodman GMS90703BXA Heater

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I have Goodman 2 speed NG furnace that will not heat or circulate air (manual mode). The LED trouble lite blinks 3 times indicating a pressure switch or clogged line problem however, the inducer blower is NOT operating. I checked for power to the motor and got no power (115V). All the air lines are clear and the pressure switches seem to operate normally using my Ohm meter (normally open, then close when I blow air in the line). Does this sound like a circuit board problem? Thanks, Steve

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Try jumping out the pressure switch see if it works then

Posted on Jun 08, 2010

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· The furnace control checks for an open main limit (this
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· The venter blower is energized.· The vent pressure switch will close when it detects a
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· After a pre-purge of about ten (10) seconds the electronic
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