If the compressor's internal mechanism becomes mechanically seized or is very difficult to turn, the ECU will register this as a "compressor sticking" fault and disable it to prevent further damage or a snapped drive belt. The manual states to manually check if the compressor is jammed by attempting to turn the clutch plate; if there is a point of resistance, it indicates a seized compressor.
This write-up serves as a quick reference for troubleshooting, maintenance, and part selection for the DF1070 engine. Always verify VIN compatibility before ordering major components. renault df1070