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

    Oct 25, 2008, 12:45 PM
    Furnace blower won't run
    I have a 1994 Conquest furnace with a Honeywell circuit board. The exhust fan will run and then the burners will start but when the circuit board "clicks", the blower won't run. I noticed on the back of the board a burned spot at one of the solder points. I referanced the board number, ST9101A 1014, and it showed it being replaced by ST9120U 1003. It looked good except my board is a nine pin and the replacement is a six pin. Any ideas?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Oct 25, 2008, 01:34 PM
    Here is a diagram for your old board


    http://customer.honeywell.com/techli...it/69-0686.pdf


    Here is a diagram of the new replacement board. NOTE adapter is included I believe.


    http://customer.honeywell.com/techli...it/69-0644.pdf

    Looks like a piece of cake if you read and take your time doing the conversion.
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