Genuine Daikin 1386000 Compressor is the ZR36K3-PFJ single-phase compressor that circulates refrigerant through the outdoor unit, started directly across the line by the magnetic contactor and held in run by its 50 µF capacitor. When it fails the unit loses compression and can no longer cool or heat, typically drawing locked-rotor current and tripping the overload as the motor stalls. A tired run capacitor or a pitted contactor is so often what kills a single-phase compressor that renewing both on the same job is the sensible call — and a genuine Daikin compressor is built to the exact pump specification the original was, so it drops in and runs as Daikin intended.