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

    Dec 14, 2013, 05:14 PM
    My furnace, (Lenox model #80mgf3-75A-1, does not fire up, even though I installed new
    The furnace does not fire up even though I installed new sensors( flame & Ignitor). The gas valve opens and I can hear the trigger switch sound ("click"), the furnace repeats this cycle four times and then stops. During the cycle, the red & green lights on the ignitor control board are blinking simustaneously, but after the cycle is over, these lights blink alternatively like twice per second.

    How can I fix it?

    Thanks,

    Frank.

    PS. The furnace uses natural gas.
    Grady White's Avatar
    Grady White Posts: 1,417, Reputation: 59
    Ultra Member
    		  
    #2

    Dec 14, 2013, 06:39 PM
    Somewhere on the furnace (often inside the blower compartment door) should be a key to the blink code. Nearly every manufacturer uses different codes for a given problem.
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