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    dday55281's Avatar
    dday55281 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Dec 3, 2008, 03:41 PM
    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
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 3, 2008, 04:49 PM
    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)
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #3

    Dec 3, 2008, 05:30 PM

    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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