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My Goodman High efficiency furnace stopped working and I getting 3 flashes from the red light in the viewing window. I know that this is a malfunction code but I can't find out what it means. Can you help?

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On the panel with the wiring diagram, there is an error code chart. I think 3 flashes is a pressure switch problem. Check your air filter, condensate pump or hoses. Check the small hoses going to the pressure switch, check your air intake and exhaust vents. Remove any moisture or debris. Make sure all venting pitches back to the heating system and no low spots are holding water.

Posted on Dec 11, 2009

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Posted on Jan 02, 2017

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