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    mbordonaro's Avatar
    mbordonaro Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 18, 2010, 09:31 AM
    House ac slow air flow irst floor,damper not opening?
    Hi my ac unit in my house has 2 zones. 2nd floor has good air flow, 1rst floor suddenly has low, low air flow. It seems like the zonefirst motor spring retun valve does not open.
    Tried making adjustments with long screw, but still low air flow.
    Any suggestions, help please
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jul 18, 2010, 03:12 PM
    Quote Originally Posted by mbordonaro View Post
    hi my ac unit in my house has 2 zones. 2nd floor has good air flow, 1rst floor suddenly has low, low air flow. It seems like the zonefirst motor spring retun valve does not open.
    tried making adjustments with long screw, but still low air flow.
    any suggestions, help please
    Sounds like you are having zone problems. You will have to track down the circuit and see why the 1st floor is not opening. Probably a bad zone motor or another electrical problem.
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