Performed AC maintenance tune up service on minisplit heat pump system checking all electrical components, refrigerant balance, unit start up, operation, shutdown, cleaning of indoor and outdoor units, treatment of drain line, pulled vacuum on outdoor drain, everything runs normally at this time. Had question about Bosch unit being open on top collecting leaf litter, believe system will have no issues operating normally even if it accumulates a couple leaves through fall. Will check again during fall tune up and determine if anything should be done to keep leaf litter out of unit.