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

    Nov 23, 2007, 06:05 PM
    Main blower fan on furnace
    Hi, I have a high efficient furnace(carrier 58msa). The furnace will not fire up. The house fan comes on first. The inducer fan should run first and then the required sequence should then follow. I have checked the thermostat, it is OK. The other thing I need to check is the pressre switch. I am getting 24v there. I have not checked through the switch. Am I on the right track?

    Thanks

    blackpirate
    hixton's Avatar
    hixton Posts: 146, Reputation: 5
    Junior Member
    		  
    #2

    Nov 23, 2007, 08:06 PM
    If you shut it off and turn it back on the blower will run first if your thermostat is calling for heat then the inducer motor then your hot surface ignitor
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