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    ljaffe's Avatar
    ljaffe Posts: 3, Reputation: 1
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    #1

    Oct 28, 2008, 06:50 PM
    Lennox G20 with bad BCC
    I have a Lennox G20 which I think has a bad BCC. It is having trouble starting up. It sounds like some of the relays on the board are bad. It is making an odd clicking noise on the board. It is Sometimes it does not ignite the burners and sometimes it does. When the burners do ignite, the fan sometimes does not come on and so the burners shut off. Can you help me verify that it is the BCC and not the igniter or the transformer?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Oct 28, 2008, 07:06 PM

    Quote;;verify that it is the BCC and not the igniter or the transformer?

    When a igniter is bad,it doesn`t work even once in a while

    When transformer is bad, nothing will work at all,the transformer is what sends low voltage power to the controls
    ljaffe's Avatar
    ljaffe Posts: 3, Reputation: 1
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    #3

    Oct 28, 2008, 07:14 PM

    OK, then. I guess it's off to the store to buy a new BCC. Thanks.
    ljaffe's Avatar
    ljaffe Posts: 3, Reputation: 1
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    #4

    Oct 30, 2008, 05:21 PM
    Ok, so here is a follow-up. I bought the part from http://www.hvacpartsshop.com/and reaved it the next day. I just installed it and the furnace appears to he working normally again. Thanks for the help.
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