Goodman furnace help please

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Old 11-28-18, 02:13 PM
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Goodman furnace help please

Ok so furnace stopped working last night. 3 blinking lights on. Today I changed out pressure switch. Changed inducer motor. Checked vent tube for obstructions changed tube from pressure switch to inducer motor and changed the flame sensor Still 3 lights. A few times it would glow the igniter. Then recycle and go back to 3 lights. Says pressure switch open.

It it is a horizontal single stage 80% unit. In the attic. What am I missing??????. And thank you it is cold out now
 
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Old 11-28-18, 02:37 PM
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First thing to check Is if the venter/inducer fan is running. It should start turning shortly after a call for heat.
 
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