Genuine Daikin 2008288 Fan Motor Capacitor is the run capacitor that provides the phase shift the outdoor fan motor needs to start and hold full speed. When it loses capacitance the fan turns slowly or stalls, and the unit can trip on high head pressure as coil airflow drops. Since a failing fan capacitor and a worn fan motor commonly go together, fitting both genuine in the one visit is worthwhile — and the correct Daikin capacitor matches the motor's phase angle where a generic substitute runs it hot.