Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Carrier Stat wiring help

guess I'd google carrier thermostats.


  • steve_202
    steve_202 Member Posts: 1
    Carrier Stat wiring help

    I need to replace my Carrier TSTATCCP2S01-B thermostat for our commercial electric heat/cool 5 ton system.
    The replacement stat is a Carrier 33CS450-01.
    The problem is in trying to match the wiring terminals.
    The old stat has a "S1" and "S2" terminal and the new unit has a "RS1" and "RS2" and a "RS+5". We are assuming these are the related terminals but not sure.
    Any help would be appreciated...perhaps you can direct us to an online wiring diagram.
    Thanks in advance...
  • John Mills_4
    John Mills_4 Member Posts: 43
    I found

    nothing on your old stat. On the new one, the 3 terminals starting RS are for a remote sensor. Does your stat use a remote sensor? I did find a feature matrix that shows the old stat could use an outdoor sensor but still think Carrier uses a 3 wire outdoor sensor. I used to have one on my office's stat til the stat died.
  • steve, if you haven't found it already


    the s1 and 2 on the old stat are for remote sensors, and the rs1, 2 and +5 aren't used
This discussion has been closed.