Arrived at the home and tenant explained what has been happening with the equipment. Began to do diagnostics. Needed to thaw condenser coil. Checked refrigerant charge and found low. Spoke with the homeowner and he opted to just add refrigerant for now. If it freezes again, he will want to do a leak check. Homeowner agreed to add refrigerant. Equipment is heating. Jug #346, 3 pounds was used