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  1. #1
    Join Date
    Apr 2009
    Posts
    2

    Default Lose power in part of house, A/C Coil hums

    My lights have been flickering for the past few days, then I lost all power in a portion of the house. No breakers tripped, and the lines to the breakers and the neutral are all tight. When the power goes out I can hear a humming noise coming from the central air conditioner coil in our attic. When I shut the breaker to the air conditioner, after a minute or so the power comes back on in the portion of the house that was out. If I flip the A/C breaker on again, I get the same flickering, etc. The flickering can go on for days before losing power. Strange, any ideas?

  2. #2
    Join Date
    Mar 2009
    Location
    OKC
    Posts
    247

    Default Re: Lose power in part of house, A/C Coil hums

    sounds like a problem for your elec. company

  3. #3
    Join Date
    Nov 2007
    Location
    Pennsylvania
    Posts
    246

    Default Re: Lose power in part of house, A/C Coil hums

    Quote Originally Posted by jldelia View Post
    My lights have been flickering for the past few days, then I lost all power in a portion of the house. No breakers tripped, and the lines to the breakers and the neutral are all tight. When the power goes out I can hear a humming noise coming from the central air conditioner coil in our attic. When I shut the breaker to the air conditioner, after a minute or so the power comes back on in the portion of the house that was out. If I flip the A/C breaker on again, I get the same flickering, etc. The flickering can go on for days before losing power. Strange, any ideas?

    It certainly sound like electrical part of your A/C system needs attention.

    I would leave the breaker for A/C system off until electrician investigates the problem.
    "Life does not go by the book, we learn as we go along".

    You only need two tools in life - WD-40 and Duct Tape.
    If it doesn't move and should, use WD-40.
    If it shouldn't move and does, use the Duct Tape.


  4. #4
    Join Date
    Apr 2009
    Posts
    2

    Smile Re: Lose power in part of house, A/C Coil hums

    Well, it was a problem for the electric company. Apparently the whole street was having an issue of receiving only partial power. I would have definitely thought it was something to do with the A/C unit, but thankfully, not the case.

  5. #5
    Join Date
    Jan 2009
    Location
    Truckee, Calif.
    Posts
    24

    Default Re: Lose power in part of house, A/C Coil hums

    Glad you found the problem. Most power companies have several houses on one transformer, so if a "hot leg" has a bad connection at the transformer, all of the houses will have a similar problem. It's called "half power or "partial power' . If it's a neutral problem, you can have half of your lights go bright when others go dim. Either one can cause expensive damage.
    Just because you can, it doesn't mean you should!

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