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-   -   Furnace works up to 67 degrees but error code 33 if set to 68 or higher. (https://www.askmehelpdesk.com/showthread.php?t=777866)

  • Dec 6, 2013, 01:45 PM
    jfiguere678
    Furnace works up to 67 degrees but error code 33 if set to 68 or higher.
    Hi,
    I have done the following
    - replaced the air filter
    - checked for blocked pipes
    - replaced flame rollout switch
    - Fan is secure and spins

    Everything works fine until I increase the temp above 67... what the heck?

    Thanks in advance for any suggestions.

    Jay

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