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    kcbdeast's Avatar
    kcbdeast Posts: 1, Reputation: 1
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    #1

    Nov 6, 2008, 06:14 PM
    Lennox G40DF Merit Series furnace won't run
    I have a 2004 Lennox model # G40DF-48C. My small lower blower motor will kick on for about 4 or 5 seconds then shuts down. Everything will work fine with the a/c on, only have problem with heat. Both red and green lights are alternating a fast flash. Is this the ignitor or do you have any other ideas?
    letmetellu's Avatar
    letmetellu Posts: 3,151, Reputation: 317
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    #2

    Nov 6, 2008, 08:05 PM

    I do not sell Lenox so I am not up on them but somewhere you should have a code information sheet that will tell you what the flashing means.
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