AC Repair: customer was concerned about a small coming from system. Apon inspection I noticed no build up on coil or return. System was clean. Second issue was unit turned off at times. After looking into the issue discovered that the drain was full and had tripped the float switch pan shutting off the system. Customer agreed to have drains cleared and vacuum out the drain pan. After completing task drain line was flowing properly out of primary drain line. No indication of water dripping into pan at this time. Also check refrigerant charge and was spot on.