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    robert sandlin's Avatar
    robert sandlin Posts: 1, Reputation: 1
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    #1

    Dec 9, 2012, 04:40 PM
    Centurion gas furnace
    Recently cleaned coils and replaced limit thermo htr is shutting down appears to be same limit switch, possible causes for this repeat problem
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
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    #2

    Dec 9, 2012, 06:38 PM
    Many possible causes but here's a start: Closed or blocked registers or return grills, highly restrictive air filter, blower motor not coming up to speed, weak limit.
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