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Thread: Board dip switch for 2 stage heat

  1. #1
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    Jul 2021
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    Board dip switch for 2 stage heat

    Change dip on furnace board for C9MPV075F12B1 furnace 2 stage heat single cool. Original single stage thermostat and am changing to 2 stage thermostat to utilize the full benefits of 2 stage thermostat-controlled heat. Schematic on furnace shows dip for single or 2 stage thermostat. Is that the only change on furnace to be made? (wiring is straightforward)
    Thanks

  2. #2
    Join Date
    Jul 2007
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    Virginia
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    Quote Originally Posted by electricpatj View Post
    Change dip on furnace board for C9MPV075F12B1 furnace 2 stage heat single cool. Original single stage thermostat and am changing to 2 stage thermostat to utilize the full benefits of 2 stage thermostat-controlled heat. Schematic on furnace shows dip for single or 2 stage thermostat. Is that the only change on furnace to be made? (wiring is straightforward)
    Thanks
    The unit must also be wired from the thermostat to the furnace for 2 stage.

    That is about all the assistance that can be provided, as this is not a DIY forum. The RED writing at the top of the page mentions that caveat. We are not allowed to assist with technical information.

    If you have the installation manual, it explains what is required for using a 2 stage stat.
    Instead of learning the tricks of the trade, learn the trade.

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