Home>Discussions>ELECTRICAL & LIGHTING>Lose power in part of house, A/C Coil hums
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jldelia
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?

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

sounds like a problem for your elec. company

BigWalt
Re: Lose power in part of house, A/C Coil hums
jldelia wrote:

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.

jldelia
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.

Vern Smith
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.

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