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    nickandmary01 Posts: 1, Reputation: 1
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    Feb 5, 2011, 04:02 AM
    My new Heat Pump System won't run
    I wired up my new Trane Heat Pump system (Outside unit, attic unit, and Tstat) and it ran for a day. Came back the next day and it would not start. I hear a humming from inside the AHU cabinet still. The humming was also there before when it did run.

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