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-   -   Thermostat problem (https://www.askmehelpdesk.com/showthread.php?t=530712)

  • Dec 1, 2010, 01:13 PM
    dg42a
    Thermostat problem
    I recently bought a house with no thermostat only 4 wires coming out of the wall.
    I bought a thermostat for it but the markings on it don't match the ones on the
    Furnace. The thermostat markings say y1,w/b,y/o, rh, rc, and g. I opened the
    Furnace and there are 7 wires going into a box which I assume is the circuit
    Board. They are marked as: blue wire mv, red mv, yellow tr, green gnd, orange
    Pv brown th and a white cloth like wired labeled sense, My question is can these
    Two sets of markings be cross referenced with each other? Otherwise I have no
    Way of telling which wire goes where.

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