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  1. #1
    Join Date
    Oct 2019
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    Thermostat wiring question (V wire)

    I thought I was set to replace my thermostat but there's two things I haven't seen on the internet when looking this stuff up. There's a seperate red wire connecting RH and RC together, and I have a "V" wire but the previous homeowner had the vision to write "Brown" next to it. What could these things mean? I do not have a heat pump, but we do have a humidifier attached to the furnace that is inoperable. Replacing RHEEM RHC TST401MDMS with emerson ST55. Praying automod doesnt just wipe this because my acct is new.

    I would link you to a f***** picture, but I can't post links!! lol!!!!!

  2. #2
    Join Date
    May 2004
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