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-   -   Carrier Condensing Gas furnace Code 23 (https://www.askmehelpdesk.com/showthread.php?t=288005)

  • Dec 3, 2008, 03:41 PM
    dday55281
    Carrier Condensing Gas Furnace Code 23
    Have a Carrier Gas Furnace Model #58MSA. Has stopped working and code #23 comes up, which the owners manual states have service call. Live in area where service calls are hard to come by and am also a DIY type of person. Any suggestions. Thanks Steve
  • Dec 3, 2008, 04:49 PM
    hvac1000
    Look on the back side of the blower access door for a legend as to what exactly the code 23 means.

    I am guessing pressure switch stuck closed but that is just a guess.

    If code 21

    21 GAS HEATING LOCKOUT - Control will NOT auto reset.
    Check for: - Mis-wired gas valve -Defective control (valve relay) (circuit board)
  • Dec 3, 2008, 05:30 PM
    mygirlsdad77

    Just waiting to see what code 23 means. Then I will try to help. Make sure you are reading the blinking lights correctly.

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