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    Dec 9, 2018, 06:29 PM
    Replace Weathertron Thermostate with Honeywell RTH3100C
    Replacing Weathertron thermostat with Honeywell
    I am attempting to replace our Weathertron thermostat with a Honeywell RTH3100C. We have a Trane heatpump with emergency heat system. I am having trouble with the wiring. My wires don't match the 'less common wire designations' in the manual.
    I have the following wires on the Weathertron:
    R-red
    T-brown
    O-orange
    G-green
    Y-yellow
    X2-black
    B-blue
    W-white
    F-Pink

    Here is what I have based on the Honeywell installation guide:
    E=Weathertron X2
    Aux=Weathertron W
    Y=Weathertron Y
    G=Weathertron G
    O=Weathertron O
    L=Weathertron F
    R=Weathertron R
    B=Weathertron ? (no wire connected to B on the RTH3100C)
    C=Weathertron B

    I have taped over the T wire, which I think is unused on the RTH3100C.

    Do I have this right?

    Thanks for the help.


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