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    Shane123's Avatar
    Shane123 Posts: 1, Reputation: 1
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    #1

    Jul 23, 2010, 07:30 PM
    York diamond 80 furnace troubleshooting
    I have a York Diamond 80 central air unit that won't start. It's nine years old. The outside condensing unit runs but the inside blower will not start. It makes a light humming sound.
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
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    #2

    Jul 23, 2010, 08:33 PM

    Possible a bad capicitor,you need a special tester to check it of either just replace it with a exact replacement, if you do it yourself, Cost maybe $10,
    AsianR350's Avatar
    AsianR350 Posts: 1, Reputation: 1
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    #3

    Sep 11, 2011, 06:02 AM
    Also check PCB, it might have bad solder joint on the relay.
    Resolder and it should fix.
    I had same problem and fixed it.
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