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

    Jun 3, 2009, 09:02 AM
    Furnace/AC/fan won't run. No voltage to thermostat
    I don't have any voltage to the thermostat. There is power to the control board. What do I check next?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Jun 3, 2009, 10:43 AM
    The fuse on the circuit board if it is a low voltage problem then on to the low voltage transformer If those check out as good then check the thermostat wire from the thermostat to the furnace.
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