Page 2 of 7 FirstFirst 1234 ... LastLast
Results 7 to 12 of 40

Thread: Nest with Trane TWG030A 140B1

  1. #7
    Member

    User Info Menu

    Quote Originally Posted by hvactechfw View Post
    You have a standard all electric heat pump system, NOT dual fuel. Was nest unable to help you? O/B is for your O wire.... what terminal do you have the aux heat wire installed to?
    Nest was unable to help me past suggesting that I have a professional installer come out to take a look.





    If the aux wire you are asking about was the E wire in the old thermostat, then that wire is connected to the * on the Nest (this was the instructions given to me by the nest.com/star page)

  2. #8
    HVAC Thermostat Specialist

    User Info Menu

    move it to w1.............. and see what happens... One of the problems with Nest design is that you can't jumper a wire to an additional terminal. SO unless you have separate aux and emergency heat wires then you will only have one function either aux heat or emer heat.

  3. #9
    Member

    User Info Menu

    Quote Originally Posted by hvactechfw View Post
    move it to w1.............. and see what happens... One of the problems with Nest design is that you can't jumper a wire to an additional terminal. SO unless you have separate aux and emergency heat wires then you will only have one function either aux heat or emer heat.


    W1 is labeled as "aux. heat" but it is giving me an n23 error (no power to W1)

  4. #10
    HVAC Thermostat Specialist

    User Info Menu

    right, but it is giving you a now power on * also when the wire is there....but it still works.... essentially nest is probably not going to work for you unless you get a pro that really knows what he is doing and adds a relay. I wish I could help more but you really need a pro.

  5. #11
    Member

    User Info Menu

    Quote Originally Posted by hvactechfw View Post
    right, but it is giving you a now power on * also when the wire is there....but it still works.... essentially nest is probably not going to work for you unless you get a pro that really knows what he is doing and adds a relay. I wish I could help more but you really need a pro.
    This is what I was afraid of. I appreciate the time and advice. We'll get through tonight, wire up the old thermostat tomorrow then look into having a pro come out to the house to see about installing a relay.

    I'm in DC. Any idea about what the range I could be expected to pay for the visit? It's probably not covered in the home warranty they we have because this is new equipment we are installing.

    Again, thanks. It's very nice of you to give your time!

  6. #12
    HVAC Thermostat Specialist

    User Info Menu

    Go to certified.nest.com and click on the "find an installer" link on the page for an idea of pricing. Warning.... not all installers are very knowledgeable. Personally, I would consider a different wifi thermostat.

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •