A PSC motor includes a stator core, a rotor arranged in a rotation relationship with respect to the stator core, a first to eighth winding coil sets wound around the stator core and a capacitor. The motor has two kinds of configurations for 4-pole and 6-pole operation modes, respectively. The configuration for the 4-pole mode comprises a primary winding and a secondary winding which is connected in series with the capacitor, and has two reversible operation directions. When operating at one direction, the primary winding includes the first to fourth winding coil sets, and the secondary winding includes the fifth to the eighth winding coil sets; and when operating at another direction, the primary winding includes the fifth to the eighth winding coil sets, and the secondary winding includes the first to fourth winding coil sets. Also, the configuration for the 6-pole mode comprises a primary winding and a secondary winding which is connected in series with the capacitor, and has two reversible operation directions. When operating at one direction, the primary winding includes the first, second, fifth and seventh winding coil sets, and the secondary winding includes the third, fourth, sixth and eighth winding coil sets; and when operating at another direction, the primary winding includes the third, fourth, sixth and eighth winding coil sets, and the secondary winding includes the first, second, fifth and seventh winding coil sets.