Reason for coming out today is mini split was not cooling from the center of the inside head unit, no airflow was passing through. Upon inspection of the Mr. cool system found that blower wheel was very caked up and was not able to give proper airflow due to buildup. After cleaning blower will perform diagnostic on complete system and found no issues with system. System is now currently cooling properly. After speaking with Jon H, outdoor unit not accessible due to on the roof with no way to access, he agreed I can clean the blower wheel and perform system diagnostic. The best of my ability and his system is working good then it will be OK. After starting system back up had a 20° delta T system is working properly. Make sure drain pump is pumping properly. At this time no further concerns that I could address.