After running for any length of time ( like overnight) air stops coming out of our vents. The condenser outside is running and I hear the fan in the attic running but there is very very little air movement. If I shut down the unit for awhile and restart it there is good/normal airflow. I had an AC man come out and he said our coils were clean and the unit seemed to be operating fine with good airflow, but this morning, we were back to no air movement.
Any ideas would be appreciated. JD