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-   -   A/C box fan outside won't turn on anymore, hums... Can't figure out (https://www.askmehelpdesk.com/showthread.php?t=483083)

  • Jun 26, 2010, 10:42 PM
    jeffpas
    A/C box fan outside won't turn on anymore, hums... can't figure out
    Hi All,

    One of the 1.2 million unemployed whose unemployment was also ended by the Senate yesterday. :(
    Well, apparently that wasn't enough for the week. This evening, the A/C decided to break, and it hovers 95+ here afternoons and very very humid.

    The central fan works just fine, but the fan box outside won't kick on anymore. It appears to be humming (reminds me of a vaccuum with something stuck in the rollers) but the fan blade turns freely and I can't see anything stuck.

    Is this a common problem/common occurrence that anyone has heard of before? Obviously it must be getting power or it wouldn't be humming. Open to any suggestions and will try anything, thanks much.
  • Jun 26, 2010, 11:05 PM
    wmproop
    Check the breaker for power,, could be the low voltage control (contactor) that you hear humming,you would hear this without the 230 volt breaker being on
  • Jun 27, 2010, 06:43 AM
    jeffpas

    Hi thanks for the help.
    I reset all the breakers in the basement, checked all wire connections and turned the air on again today.
    After a bit the condenser unit reluctantly started. Now it is running, but the fan box appears to be running at a slower speed or not as loud as it normally does.
    Also, the air is blowing inside the house, but it does not appear to be cold.
    Is there a breaker somewhere else on the unit itself you are talking about?
    Is there a part that would cause this odd behaviour?
  • Jun 27, 2010, 11:00 AM
    wmproop
    Capicitor,, possible

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