Arrived on site to perform AC diagnostic on York condensing unit. Upon arrival Erica stated that she does not live in the house and has been under renovation and is preparing for tenants to move in around December January. She states now that it does not cool the house down. Begin diagnostic an outdoor condensing unit and immediately found that disconnect was not in. Inspector disconnect and found Heavy oxidization and corrosion occurring. Both 35 amp fuses were blown. Installed new fuses and System still did not turn on. Inspected starter and found that low-voltage terminal had completely broken off due to oxidization. Installed new starter and System still did not turn on. Traced low-voltage wires and found a high and low pressure switch. Unfortunately low pressure switch is closed due to low refrigerant charge on the system. This is an indication of a major leak within the refrigeration cycle of the air conditioning unit. It is more common on beach houses for refrigerant leak due to