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Old 06-16-2009, 09:51 PM   #1
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A/C outside unit hums, not start


I have a Lennox ac unit 13series. The outside unit sounds like it wants to turn on, but the fan isn't turning. Unit is not that old, around 4years. We have already replaced fan motor not long ago. Thermostat wire is not tore up.

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Old 06-16-2009, 10:16 PM   #2
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A/C outside unit hums, not start


sounds like fan motor or cap, is compressor starting?

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Old 06-17-2009, 06:54 AM   #3
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A/C outside unit hums, not start


did they install a new capicator when they replaced motor ?? Check fan cap..
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