Most likely the fan blade is hitting the fan shroud.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
..


"W. eWatson" wrote in message
...
It's 4:45 am here with a temp of 67F outside. I started it.
It puts out cold
air immediately, and the noise. The noise sounds like that
produced by a
bicycle with a piece of stiff cardboard inserted into a
spoked wheel. It's
the sort of noise kids used to do with bicycles to make them
sound like a
motorcycle or a motor. Turn it off and it sounds like such a
bicycle slowing
down. There's got to be something stuck in the fan. Later
this morning,
when I can get some help pulling the a/c out of the window,
I'll examine it
by opening it up.

--
W. eWatson

(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std.
time)
Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700
feet

Web Page: www.speckledwithstars.net/