Unit is System not cooling properly on arrival. All motors are operating. Measured refrigerant pressures and found system completely dry on charge. Recharged system 6 lbs r410A and leak checked every weld and fitting with soap bubbles. Found no signs of leaking at the indoor or outdoor welds, compressor manufacturer welds, service ports, txv or valves. Injected the system with leak detecting dye, this system will need to be inspected for leak dye in a month to find the location of the leak. System is cooling properly at this time.