Arrived at our clients home to perform the deep cleaning on a mini split unit. We broke down and took apart The mini split head inside the garage and proceeded to clean the entire system from the buildup of dirt and debris. We then used nitrogen to help dry off the components before reassembling the mini split head. Once the system was reassembled began to test the unit. The client could feel the improvement of air moving from the blower. We Proceeded outside and inspected the system and found it to be freezing up on the outside copper line set. Shelby and I found a leak at the Schrader core That needs to be removed and replaced. We will communicate with the office regarding the repair and what needs to be done for the service. The unit is clean but not cooling properly.