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    matt1926's Avatar
    matt1926 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 6, 2010, 11:42 AM
    Central AC stops working in High Heat
    Hi. My Central AC stops cooling in High Heat. The tech came and said that it is a Utility issue since the voltage coming into the unit was only 195 V and the unit needs 230 V to run. What should I do? Thanks.

    Matt
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jul 6, 2010, 12:18 PM

    Contact the utility and have them correct the low voltage problem. Actually the unit does not need 230 volts to run but 195 is a bit low.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #3

    Jul 6, 2010, 12:19 PM

    Get the utility to come out. There is not much you can do that isn't expensive.

    1. Utility fixes.
    2. You install a tap-changing voltage regulator (trust me - you don't want to go there)

    Make sure the voltage was measured at the power into the house, not at the unit.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #4

    Jul 6, 2010, 12:23 PM

    From the standard service of 240, 195 is about 18% low,

    That's not what's expected to be delivered by the utility.
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