Genuine Daikin 4015263 Outdoor DC Fan Motor is a variable-speed DC motor that drives the outdoor fan in step with the system's cooling load. As it wears the fan may surge, run at the wrong pace, or stall while the unit keeps working. The genuine motor matches the unit's DC control signals for accurate fan speed. Depending on your model this motor may need a matching capacitor — contact us before ordering to confirm what your unit requires.