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    ccp88's Avatar
    ccp88 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 8, 2008, 03:35 PM
    Thermostat wiring Honeywell rth3100c
    I have a Weathertron Thermostat Model # baystat239 and try to convert to Honeywell RTH3100c.

    Connecting to weathertron thermostat currently are
    x2-black
    o-orange
    g-green
    y-yellow
    t-brown
    r-red
    w-white
    b-blue

    So the wire I transfer to Honeywell thermostat are
    x2-black to E
    0-orange
    G-Green
    Y-Yellow
    T-DON'T KNOW
    R-Red
    w-white to AUX
    B-don't know

    My question is where I connect the T-Brown wire and the B-blue wire to.
    Currently the honeywell L, B, and C is not connected.

    My unit is central A/C and heat w/ outside unit -that also have emergency heat if the outside unit is not working.

    Thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Mar 8, 2008, 04:04 PM
    See page 11 and 12.

    http://customer.honeywell.com/techli.../69-1889EF.pdf
    NorthernHeat's Avatar
    NorthernHeat Posts: 1,455, Reputation: 132
    Ultra Member
    		  
    #3

    Mar 9, 2008, 07:26 AM
    Hope this helps.
    https://www.askmehelpdesk.com/heatin...tml#post268211
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