The AC works in my new project sc300
but every now and then the green light on the AC button flashes.
I press it to turn it off and press it again to turn it back on and it seems fine.

also everynow and then the AC would seem like it's not very cold,
think I have air bubbles in the AC lines???
not sure what it could be

 

A simple search would have yielded the answer which is the AC clutch is going out. Good luck with that one, i just replaced mine.

 

Or the clutch gap might need adjustment perhaps?