Customer called for mini split not cooling. Arrived and found head and condenser operating, temp was 69 on head unit. Customer did say they washed the filters after noticing coils ice up. Outdoor unit was very dirty with tree pollen, between the head unit and condenser I would say there was the right combination to prevent efficient cooling. Customer is going to let unit run a few days to see if there is any difference. Completed AC inspection on customers central AC system. Most aspects of system measured within manufacturer specifications. Found blower was never adjusted to proper speed for AC tonnage, matched the two for better cooling and dehumidification. No recommendations at this time. Thank you!