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

    Dec 13, 2008, 11:13 AM
    My heat pump only blows warm air. No cold air.
    I just installed a new digital t-stat on my comformaker heat pump a/c system. I am getting warm air when I want it to cool.
    KC13's Avatar
    KC13 Posts: 2,556, Reputation: 99
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    #2

    Dec 13, 2008, 11:19 AM

    Most heat pumps power the reversing valve in cooling (O terminal), some in heating (B terminal). Your new t-stat may require configuration to the type of reversing circuit you have.
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