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-   -   RTH6300B uses 5 wires mine is 6 wires (https://www.askmehelpdesk.com/showthread.php?t=276745)

  • Nov 3, 2008, 02:38 PM
    dorothykarpinsk
    RTH6300B uses 5 wires mine is 6 wires
    Do I need 6 wires and the 6th wire is marked W2. Where does that connect to?
  • Nov 3, 2008, 02:54 PM
    hvac1000
    You probably have the wrong type of thermostat. You probably need a 2 stage heat thermostat from the limited info provided.

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