Service call- water in the pan due to clogged drain. Cleared all water from pan. Vacuumed drain from outside. Cleared all sludge and debris that built up in drain line. Drain is now draining properly. Checked refrigerator levels and they were slightly off due to dirty coil and filters. Washed down condenser coils and replaced filters for client. Refrigerant levels are now normal and system is functioning properly at this time.