Met with David to discuss the issue. David commented that the unit was running but not producing cold air. Started at the outside condenser and quickly noticed the unit was not running. Pulled the disconnect switch and began testing for power. The unit is receiving 240v. Moved to the condenser junction box and tested the capacitor. The fan side passed and the compressor side failed. David provided me with a working capacitor which I tested on the unit to no avail. A new condenser is strongly recommended given the age and condition of the unit. As per Frank the trip and diagnostic fee has been waived due to the customer committing to the repairs.