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    norris's Avatar
    norris Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Mar 27, 2007, 05:14 PM
    Heat pump thermostat trouble
    When I place my thermostat in cool setting it runs for a couple of moments with cool air. Then the emergency heat light comes on and unit blows hot air. The thermostat remains in cool setting.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Mar 27, 2007, 05:28 PM
    Have you just replaced the thermostat or changer any wires?
    norris's Avatar
    norris Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Mar 28, 2007, 05:42 PM
    I have not changed thermostat /should I?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #4

    Mar 28, 2007, 08:43 PM
    Quote Originally Posted by norris
    I have not changed thermostat /should I?
    No this problem could be a relay or other fault. Look at the sticky notes at the beginning of this list to see if there are any suggestions. Usually you need to call a profession unless you know about relays ,thermostats etc.
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
    Ultra Member
    		  
    #5

    Mar 29, 2007, 05:56 PM
    May have a bad thermostat or grounded wire. Remove the W1 and or W2 wire from the t-stat or fan coil and try a/c again, does the heat come on with the a/c now?(Turn power off first and tape ends off wire)
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