Tech found no difficulties at this time with mini split. Tech found main unit control board fried and heat strip contactor melted. System is out of warranty homeowner want field supervisor to come out next week. (Call Monday to schedule). Homeowner very interested in single condenser double head mini split on main house. Homeowner also wants surge protection built in proposal with unit installation (No matter mini split or regular unit. Wants surge). Tech did not service main unit. Homeowner used visit on mini split.