Performed leak dye check. Homeowner states system has been working fine. Cycled system for cooling. Checked refrigerant pressures on unit. Refrigerant pressures look good and system is producing proper temperature split. Checked leak dye with flashlight, could not locate Any dye at this time. System might not have ran enough yet for leak dye to come out. System is operational at this time, let homeowner know to try and run the AC more and give us a call if anything stops working. System is operational upon departure.