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    superj2112's Avatar
    superj2112 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jan 10, 2012, 08:50 PM
    Converting old thermostat to new digital honeywell
    There were 2 wires 1 red and 1 white so I installed the red to rh and white 2 w what else can I try
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #2

    Jan 11, 2012, 06:29 AM
    Are you saying after installing red to rh and white to w its not working? Did you turn off the breaker to furnace before attempting the change out?if not you may have blown your transformer, it sometimes only takes a very small spark to do the damage.
    superj2112's Avatar
    superj2112 Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Jan 12, 2012, 10:54 AM
    I didn't notice a spark where is the transformer located and how do I know if it is fried
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #4

    Jan 12, 2012, 05:11 PM
    You may have a fuse on the control board, or inline on the low voltage side of the transformer. Check there first. Your transformer will be located in the furance, so will the control board if your unit has one.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #5

    Jan 12, 2012, 06:52 PM
    Please tell us what type of furnace or boiler you have and then the exact stat you are installing. They are not all interchangeable.
    Seann's Avatar
    Seann Posts: 32, Reputation: 1
    Junior Member
    		  
    #6

    Jan 13, 2012, 11:12 AM
    Hi

    That stat need 20Vac-30Vac to work
    Need to check the voltage between the wires
    If the voltage is less than 20Vac or if there is no voltage need to work with a professional
    The wiring is correct,it should be in Rh and W.
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