Found the system out of charge. Discovered a leak at the king valve for the suction line. Tightened valve. Believe this is from the cold weather freezing the gasket and thawing. No other leaks discovered. Checked evaporator coil and line set. Condenser holds 16.75 lbs of 410a. Quotesdd the customer for both the refridgerant as well as the trip and diagnostic charge. The customer wants to discuss reimbursement with warranty company before paying for refrigerant.