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    T_Roy Posts: 3, Reputation: 1
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    #1

    Oct 8, 2008, 06:36 AM
    No Heat Cycle, Purge blower motor on continuosly
    Hi.

    I hope someone could help me. I have a York Stellar furnace and I am having a strange problem.

    The air conditioning has worked well all summer. However, when I turned on the heat the draft inducing purge motor comes on and stays on. The heating cycle does not continue beyond that. I have 24 volts at the transformer secondary. I checked the thermostat by shorting the R to W and same problem exists. I checked the pressure switch by removing the rubber tube and sucking on it, it does switch and I did a continuity check on it and it does switch. I even tried to get the heat cycle to start by sucking on rubber hose and crimping it while measuring the voltage at the igniter, no voltage.

    At this point I am thinking it is the control board, any thoughts would be appreciated. I pretty good with electronics but this has me stumped.

    T_Roy
    T_Roy's Avatar
    T_Roy Posts: 3, Reputation: 1
    New Member
    		  
    #2

    Oct 8, 2008, 06:44 AM

    A few more facts, the furnace is about 14 years old. It has a control board and White & Rogers 50E47-50 Ingintion module. LED on module is off, no blinking.
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