wo16331 UNIT WAS FOUND TO HAVE A LOW CHARGE. AFTER FURTHER INSPECTION, A LEAK WAS FOUND ON INDOOR COIL. WEATHER MASTERS RECOMMENDS TO REMOVE AND REPLACE THE INSIDE COIL. REPAIR: ---REMOVE AND REPLACE INDOOR COIL WITH OEM PARTS - REMOVE AND REPLACE BI FLOW FILTER DRIER. - PRESSURE TEST, EVACUATE AND RECHARE SYSTEM WITH NEW R410A FREON UP TO 10LBS. EVAP COIL AND TXV UNDER PART WARRANTY. UNIT IS NOW RUNNING IN COOLING. NO ISSUES. 21 DEGREE TEMPERATURE SPLIT