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-   -   Cold setting produces heat while heat setting does the same. Need cold air. (

  • Oct 18, 2009, 11:16 PM
    Cold setting produces heat while heat setting does the same. Need cold air.
    Just installed a honeywell rth221 and when placed in the heat position, it heats and when in the cool position, it heats. Why can I not get cold air? Old thermostat was a lenox with R, Y1, G, O, W1, C, New thermostat has only Y G on one side and Rh, Rc, and W on other with removable jumper connecting Rh and Rc.
  • Oct 19, 2009, 01:05 AM
    Read your install manual

    NOTE: This thermostat is not compatible with heat pumps or
    Multi-stage systems.

    On Page 1

    You have the wrong thermostat. You need 2 stage heat unit with the O terminal if you have a heat pump with an electric air handler.
  • Oct 19, 2009, 05:45 AM
    Thanks. Will look into that. Just needed warm air last week, got a bit cold and the heat worked o I never thought to check cold air.
  • Oct 19, 2009, 06:28 AM
    I am looking online trying to find a thermostat that is 2 stage with the O terminal to fix the problem but not really sure which to choose. Any suggestions on what I should be looking for?
  • Oct 19, 2009, 06:34 AM
    What thermostat to buy?
    I installed a honeywell RTH 221 but have found that with my system I get only hot air when on the cold setting and equally hot air on the heat setting. I need a suggestion on what to buy. The system is a Lenox installed when built in 1996. I have been informed by a member here that I bought the wrong thermostat and the wire connected to the O terminal was important! Even though the insallation manual said that some wires may not need be connected with newer thermostat and there was no terminal for the O or the C1 ( I beleive) it was a blue wire. Thank you all!
  • Oct 19, 2009, 06:37 AM
    Honeywell or White Rodgers are good brands. Most if not all two stage heat thermostats will have a O terminal or something similar for a setting with options on the O/B selection in the adjustable program for thermostat usage.
  • Oct 19, 2009, 06:39 AM

    This should be combined with your other thread - same issue.

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