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    vm8444's Avatar
    vm8444 Posts: 3, Reputation: 1
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    #1

    Jun 5, 2007, 10:02 PM
    How to wire a new honeywell thermostat
    Hi there honeywell rth 5100b
    I am getting heat with fan but the ac compressor not coming on for cooling,fan does though

    I have 5 wires coming out of wall to thermostat

    White
    Red
    Yellow
    Green
    Black

    Connected all wires from wall except black to thermostat
    w- I connected the white from wall
    R -with jumper rc I connected one wire the red from wall
    Yellow to y on thermostat
    G to green from wall
    And where does the black wire go?
    esquire1's Avatar
    esquire1 Posts: 2,483, Reputation: 209
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    #2

    Jun 6, 2007, 05:11 AM
    Go to your air handler and see where the wires are connected there and post back.
    vm8444's Avatar
    vm8444 Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Jun 7, 2007, 08:44 PM
    Air handler?

    IS THAT THE OUTDOOR COMPRESSER FOR AC?

    I tried the old thermostat and it still works

    Basically with 4 wires no yellow
    esquire1's Avatar
    esquire1 Posts: 2,483, Reputation: 209
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    #4

    Jun 8, 2007, 04:13 AM
    Where is the blk wire connected at at the air handler (inside unit or furnace?)
    vm8444's Avatar
    vm8444 Posts: 3, Reputation: 1
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    #5

    Jun 8, 2007, 08:49 AM
    Not sure have furnace top door off but I see a black wire connected to a round device,
    Other then that not sure
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