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  1. #1
    Join Date
    Mar 2005
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    My Honeywell Chronotherm IV Plus programmable thermostat appears to be stuck. No matter what temp I program, the thermostat will not read higher than 66 degrees. However, the furnace is producing heat.

  2. #2
    Join Date
    Jun 2004
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    if it is fact higher than 66 degrees than get a new stat

  3. #3
    Join Date
    Mar 2002
    Richmond, Virginia
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    Measure the temperature near the thermostat with another thermometer to verify that it is indeed 66°. Unless you're experiencing extremely cold weather there you should check your air filter to be sure it is clean. If it is you should call a service company and have your system checked.
    There is nothing more frightful than ignorance in action....Mark Twain

  4. #4
    Join Date
    Apr 2004
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    Put a lamp or another souce of heat under it and see if it rises.

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