Thanks for this. It is definitely separate from my furnace. Im sure I
have the right breaker though as it was the 220 and it stops the unit
from actually running. I even pulled the breaker right out after
pulling the wires. Would there be a separate power source for the
heater? Just wondering if that is what might be humming. The panel of
the unit (outside) notes that I need to leave it on for 12 hours before
running the air if its been shut off, so Im assuming it has some sort
of heating source for the fluid.

Thanks again


Joseph Meehan wrote:
wrote:
Hi,

I went out into the yard this evening and heard my air conditioner
humming. The unit hasnt worked properly since we had a major power
outage and so the only way to turn it on or off is at the breaker. I
removed the wires going into the breaker but the unit is still
humming. I openned the unit and the only power wires I can see are the
black/white/ground. It is a very old sears model and I cant find any
other shut off switch. What's going on!! Should I be concerned about
the humming and if so, how can I completely remove the power to the
unit without getting an electrician involved. I even tried going
breaker by breaker to see if there was a wire touching but nothing
stopped the humming

Thanks

You apparently did not shut off the right breaker. Remember that your
furnace is not likely on the same breaker as the A/C unit. The A/C unit
should have a 220V breaker and there should be a shutoff in the immediate
area of the unit.

--
Joseph Meehan

Dia duit