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  1. #1
    Join Date
    Sep 2006
    Posts
    12
    I recently had an Amana heat pump and furnace system installed in my home, controlled by a Carrier TSTATCCPHP01-B thermostat. The furnace fires up in the morning (50F outside) despite the fact that the thermostat is set to lock out the furnace for outdoor temperatures higher than 35F (actually the HP is turned on first and then after 15 min or so the furnace fires up until the set temperature is reached). Is it something wrong with my thermostat? Please help!! Thank you.

  2. #2
    Join Date
    Jun 2001
    Location
    Louisville, KY
    Posts
    12,189
    That thermostat can't handle dual fuel control on its own. You need a different thermostat, or your contractor needs to add a fossil fuel kit.
    Perhaps you should have read the instructions before calling.

  3. #3
    Join Date
    Aug 2003
    Posts
    40
    Not sure why the contractor chose to control the Amana equipment with the Carrier thermostat. But I agree that the thermostat can not control the dual fuel application

  4. #4
    Join Date
    Apr 2005
    Location
    Kingston Ontario Canada
    Posts
    1,211
    You need TSTATCCPRH01-B Carrier Thermidistat. This handles AC,HP,A2 for two speed AC, DF for 1 speed duel fuel, D2 for 2-speed duel fuel, and HS for 1-speed heat pump with intelligent heat staging.

    Thorton
    ____________________
    Wisdom is knowing what path to take next…
    Integrity is taking it.

  5. #5
    Join Date
    Mar 2003
    Location
    PA/DE area
    Posts
    1,535
    Thornton is correct!!I would not go with anything else.
    It's NOT the BRAND,it's the company that installs it!!!!!

  6. #6
    Join Date
    Sep 2006
    Location
    Louisiana
    Posts
    71

    Thermostat

    Yes I agree I think the best solution is to have the thermostat replaced.
    Jerry's Heating & A/C,LLC

  7. #7
    Join Date
    Sep 2006
    Posts
    12
    I apologize for providing wrong information and wasting everybody’s time. Initially I was unable to locate the model number on my thermostat and on Carrier’s web site the only thermostat that looks like mine is the TSTATCCPHP01-B. Today I opened it up and I think I found the model number (it was hidden inside): TSTATCCPDF01-B.

    [Edited by paurel on 10-08-2006 at 04:45 PM]

  8. #8
    Join Date
    Aug 2002
    Posts
    1,647
    Paurel,

    There are two setting in that thermostat..

    One is a back-up lockout, that will lock out the furnace from coming on at all if the temperature is above the set temp.. Most technicians do not set the backup lockout up and leave this setting on off to let the thermostat decide if the heatpump is keeping up with the demand and if not have the option to run the backup heat.. If your thermostat is coming out of a setback from night it is common that backup may be needed to bring the temp back up..

    The second setting is the balance point temp that locks out the heat-pump from running at all below the set temp.. Most techs in my area set this setting for 30.. When it is below 30 the gas heat will run as first stage and the heatpump will not run until is gets above 30.. My dads set-up is set at 15 and it does an excellant job but some homeowners don't like the cooler are that a heat-pump produces at lower temps..

    It sounds like your dual fuel thermostat is operating normally.. Do not use a setback on a dual-fuel application until the temp drops below your balance point temp.. A heatpump works best at a steady temp...

    Goodluck
    hope this helps..
    J

  9. #9
    Join Date
    Sep 2006
    Posts
    12
    Thank you for your input Advanced Response but it doesn’t answer my question. The back-up lockout setting is ON and the lockout temperature is set at 35F.

  10. #10
    Join Date
    Aug 2002
    Location
    manitowoc wisconsin
    Posts
    4,943
    He did answer your question.The books that come with them are fairly detailed on sequence of operation.Did they leave the literature with you?
    Take your time & do it right!

  11. #11
    Originally posted by paurel
    I recently had an Amana heat pump and furnace system installed in my home, controlled by a Carrier TSTATCCPHP01-B thermostat. The furnace fires up in the morning (50F outside) despite the fact that the thermostat is set to lock out the furnace for outdoor temperatures higher than 35F (actually the HP is turned on first and then after 15 min or so the furnace fires up until the set temperature is reached). Is it something wrong with my thermostat? Please help!! Thank you.

    The regular owner's manual doesn't explain the lockout setting. You need the following pamphlet:
    Programmable Dual Fuel Thermostats. Installation, Start-Up, and Operating Instructions.
    You'll find the required instructions at :
    http://www.commercial.carrier.com



    [Edited by deme on 10-11-2006 at 12:31 PM]

  12. #12
    Join Date
    Sep 2006
    Posts
    12
    First of all I want to thank everybody for their replies. Deme, thank you for the link - I found the pamphlet and I’d like to quote a small fragment.

    Option 8—Auxiliary Heat Lockout Setting
    This option allows selection of an outdoor temperature of 5° through 55°F in 5° steps (or equivalent values in C), or OF (off). Furnace is prevented from operating for outdoor temperatures above the selected temperature. If OF (off) is selected, furnace operation is allowed at all outdoor temperatures. If selected, emergency heat (EHEAT) overrides this feature.

    I might get this wrong but I thought that, when this feature is enabled and the outdoor temperature is above the set temperature, the furnace will not operate NO MATTER WHAT (except for the EHEAT of course). In my case this doesn’t happen.

  13. #13
    Join Date
    Apr 2005
    Location
    Kingston Ontario Canada
    Posts
    1,211
    Yes, paurel, you have interperated this correctly. I have the Carrier Thermidistat that I mentioned earlier in the thread and I have it locked out to 5 degrees F. I have electrial fan coil with 15 KW back-up heat that doesn't come on until outside temperature is at 5 degress or lower.

    Thorton
    ______________________
    To succeed, it is necessary to accept the world as it is and rise above it

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