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    ed72073's Avatar
    ed72073 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Mar 8, 2009, 05:52 PM
    Carrier trouble codes
    Hi I am having an issue with a Carrier furnace model #58STA90. It will not light and it gives a code of three short flashing led lights and then one long. I checked the igniter and did not see any cracks across it.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Mar 8, 2009, 10:36 PM
    31 PRESSURE SWITCH DID NOT CLOSE OR REOPENED - If open longer than five minutes,
    inducer shuts off for 15 minutes before retry. Check for: - Excessive wind
    - Proper vent sizing - Defective inducer motor
    - Low inducer voltage (115VAC) - Defective pressure switch
    - Inadequate combustion air supply - Disconnected or obstructed pressure tubing
    - Low inlet gas pressure (if LGPS used) - Restricted vent
    If it opens during blower on-delay period, blower will come on for the selected blower off delay

    See your manual on the link below. Page 44 figure 50.

    http://www.docs.hvacpartners.com/idc.../58st-18si.pdf
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