Genuine Daikin 1192971 Swing Compressor is the 2YC63AXD model, whose swinging piston and integrated vane compress refrigerant with less friction and leakage than a conventional rotary, its speed driven by the outdoor inverter and power module. When it fails the unit loses compression and stops heating or cooling, and the inverter trips as it tries to turn a seized or electrically shorted motor. The inverter PCB and power module usually share in that failure, so pricing them together avoids a half-finished repair — and the genuine Daikin swing compressor is the only one matched to this drive, where a substitute rotary simply won't pair with the original control.