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  1. #1
    Let me know if this question is out of line. If so, I will understand. In trying to setup my new Thermidistat with 38YDB heat pump and FV4A fan coil(new construction install). I tried to set the dehumidify function on the thermidistat. The manual says that the acceptible values are from 50% - 90%. For some reason, I can't get it to go below 60%. Did the installer forget something, or am I just doing something wrong?

  2. #2
    Let me tack one more question on here. I thought that the thermidistat had an "Ideal Humidity" feature that would automatically adjust the humidity in the house based on the outdoor temp. How would I configure that? I can't seem to find it in the manual.

  3. #3
    Join Date
    Jan 2005
    Posts
    96
    bravo3,you need the installation instructions that come with the Thermidistat. That will contain the info. on how to configure your particular system(heat pump).If its new construction,call builder to get the hvac people back to check it.

  4. #4
    Join Date
    Jul 2000
    Location
    NW IL.
    Posts
    3,935
    Just a guess but have you checked the humidity level setting? It may be set too high and is conflicting with the dehumify setting.
    Aircraft Mechanical Accessories Technician. The Air Force changed the job title to Air Craft Environmental Systems Technician. But I've decided I'll always be a Mech Acc.

  5. #5
    Join Date
    Feb 2003
    Posts
    275
    why didnt you use the infinity and not the themidistat, is leaps and bounds ahead of therm, and very user friendly

  6. #6
    Join Date
    Jun 2001
    Location
    Louisville, KY
    Posts
    12,153
    Originally posted by htinglky
    why didnt you use the infinity and not the themidistat, is leaps and bounds ahead of therm, and very user friendly
    cuz he got an FV vice an FE.

  7. #7
    I was able to find the install instructions on Carrier's website, but it says essentially the same thing about the dehumidify that the homeowner's guide says. It just talks about how to set the value and that the valid ranges are from 50-90%. I turned the humidify level of Off, since I don't have a humidifier (in FLA).

    As to why I didn't get the Infinity....when I asked my contractor about the Infinity, he told me he wouldn't install them becuase they were too new, and he didn't have any experience with them. Dash told me to ask him to be a guinea pig, but he wouldn't do it. Since the house was built by a builder, he wouldn't let me choose a different contractor. Unfortunately, I found this site a little to late to help me out with that situation.

    Thanks gang. I think I might just have the contractor come back out and show me some things

  8. #8
    Join Date
    Feb 2004
    Location
    cocoa fl
    Posts
    143
    have him come out and show you it may cost a service call but isn't it worth all the time you spend looking things up, when in reality you may have found the info but have no idea what your looking for or at ???

  9. #9
    Join Date
    Feb 2003
    Posts
    275
    when I get home tonight I will go thru my book and post for you.
    I definatly would drop this contractor at the end of your warrenty, the infinity is childs play compared to the thermidistat and much more user friendly.

  10. #10
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Originally posted by kilobravo3
    I was able to find the install instructions on Carrier's website, but it says essentially the same thing about the dehumidify that the homeowner's guide says. It just talks about how to set the value and that the valid ranges are from 50-90%. I turned the humidify level of Off, since I don't have a humidifier (in FLA).

    As to why I didn't get the Infinity....when I asked my contractor about the Infinity, he told me he wouldn't install them becuase they were too new, and he didn't have any experience with them. Dash told me to ask him to be a guinea pig, but he wouldn't do it. Since the house was built by a builder, he wouldn't let me choose a different contractor. Unfortunately, I found this site a little to late to help me out with that situation.

    Thanks gang. I think I might just have the contractor come back out and show me some things

    Here a way to get an Infinity.Get your dealer or another one,to put in a request for a damaged FE air handler,in the size you need.When it becomes available,could be months,they can just swap the controls and blower assembly from the FE into the FV,it will save you a bunch of money.

  11. #11
    Join Date
    Jul 2004
    Posts
    322
    I believe the humidifier has a setting that automatically adjusts to outside temperature, to prevent foggy windows, but the dehumidifier does not have this function. When you say you can't get it below 60, do you mean you can't set the thermidistat below 60, or you can't get your indoor relative humidity below 60?

  12. #12
    I can't set the relative humidity below 60%.

  13. #13
    Join Date
    Jul 2004
    Posts
    322
    Originally posted by kilobravo3
    I can't set the relative humidity below 60%.
    I don't have a heat pump, but I can definitely set thermidistat down to 50 on my AC. I would ask the installer what's going on.

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