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    wels48's Avatar
    wels48 Posts: 2, Reputation: 1
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    #1

    Dec 2, 2011, 10:43 PM
    Goodman furnace troubleshooting?
    I have a Goodman GDH 80703AXAC furnace it runs for about 30 min then shuts of on high limit then will allow relight? Any ideas what is going on?
    drtom4444's Avatar
    drtom4444 Posts: 3,282, Reputation: 145
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    #2

    Dec 4, 2011, 12:28 AM
    It sounds like you have an airflow problem. If you have AC coils they are probably dirty and need cleaning. Also, you should pull the blower and clean it well. Just 1/16" of dirt in cups of the vanes on blower wheel will reduce airflow by 33%. Clean it well with coil cleaner and get the airflow up and it should work fine. DrTom4444
    wels48's Avatar
    wels48 Posts: 2, Reputation: 1
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    #3

    Dec 5, 2011, 02:47 PM
    Thanks drtom44 you are a big help thans
    drtom4444's Avatar
    drtom4444 Posts: 3,282, Reputation: 145
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    #4

    Dec 5, 2011, 05:32 PM
    You are welcome. Dirty coils is a problem that is often neglected and a problem scam artists use as an an excuse to unnecessarily add Freon to you unit in an effort to raise suction pressure to keep it from freezing over.
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