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I want to install a new thermostat on my furnace, but the wire connections on the old thermostat are not marked. I have been unable to locate a diagram with wire labeling. Can you help?

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  • kathyr240 Jan 03, 2009

    Hi,

    I got the thermostat installed. It has a red, white and green wire. They were so dirty they looked brown, grey and black. The thermostat is working now, but the programing isn't. I set up the Mon-Fri, and Sat. Sun temps but it just stays on what I manually set it for. It defaults at 70 degrees, I set it to 65 when I went to bed (it was supposed to drop to 62) when I got up it should have been 62 but it was 70. I went back through the settings and they look good, it is just ignoring them. It is a Honeywell RTH 2310B

  • kathyr240 Jan 03, 2009

    Thanks, it was 2 things. The program was on override and also when I set the time I got the AM/PMbackwards so even if it had been on it would have been heating overnight not during the day.

    My instruction book was unreadable in places so I was guessing on the set up. Your comment made me look deeper in the book, Thanks!

    Kathy

  • Stephen Evans May 11, 2010

    are the wires colored? red ,white, green etc? Steve

  • Danny Clark
    Danny Clark May 11, 2010

    Tell me what color wires go to which terminals on the old T-stat.



    Then tell me all you can about the new T-stat and what terminals are listed on it.

  • Ken Bledsoe May 11, 2010

    Can you give me the colors of the thermostat wires.

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Your t-stat has a override program on it look for the hold button and cancel the function. Should be able to just press the hold temp button and it will resume the normal program.

Posted on Jan 03, 2009

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