Samsung Air Conditioner Error Code E568

The E568 error code on a Samsung air conditioner indicates an inverter compressor rotation error. This fault is detected by the main control board or inverter PCB when the compressor motor fails to rotate correctly or fails to maintain the expected rotational feedback during operation. Inverter compressors use variable-frequency drive technology to modulate compressor speed, and the control system continuously monitors rotor position and rotation signals to confirm proper motor function. When the actual rotation deviates from the commanded state, or when rotation cannot be confirmed at all, E568 is triggered.

The inverter compressor system relies on precise communication between the inverter PCB and the compressor motor windings. A rotation error can stem from electrical faults such as winding shorts or open circuits within the compressor itself, degraded motor insulation causing current leakage, or a faulty inverter board that cannot deliver the correct drive signal. Refrigerant issues such as severely low charge or liquid refrigerant slugging can also cause the compressor to stall under load, producing a rotation fault. Additionally, high discharge pressure from a blocked condenser or a failed capacitor or reactor component on the inverter circuit can prevent proper startup.

Diagnosing E568 requires checking the compressor winding resistances for balance and continuity, measuring the DC bus voltage on the inverter PCB, and inspecting the refrigerant system pressures. The inverter board itself should be inspected for burned components or failed transistors. Because this fault involves high-voltage inverter circuitry and refrigerant handling, this repair is best approached by a qualified technician with the proper tools and certifications.