(Cooling and Soft Dry Operation condition)8.9. Powerful Operation• The Powerful operation is to achieve the setting temperature quickly.• When Powerful operation is set, the setting temperature will be automatically decreased 3°C internally against the presentsetting temperature (Lower temperature limit: 16°C).• This operation automatically will be running under SHi Fan Speed (Cooling).• Vertical Airflow Direction:-- In “Manual” setting, the vane will automatically shift down 10° lower than previous setting.- In “Auto” setting, the vane will automatically swing up and down. However the lower limit will be shifted 10° downward.• Powerful operation stops when:-− Powerful operation has operate for 15 minutes.− Powerful button is pressed again.− Quiet button is pressed.− Stopped by OFF/ON operation button.− Timer OFF activates.− Operating mode is changed.8.10. Quiet Operation• The Quiet operation is to provide quiet cooling/heating operation condition compare to normal operation.(Cooling and Soft Dry Operation condition)• Once the Quiet Mode is set at the remote control, Quiet Mode LED illuminates. The sound level will reduce either around2 dB(A) for Lo fan speed or 3 dB(A) for Hi/Me fan speed against the present sound level operation.• Dew formation become severe at Quiet Lo cool, therefore Quiet Lo cool is operated only 1hr 30 min (1hr QLo, 30 min QLo+ 100 rpm). After that, it goes back to QLo +180 rpm (However Quiet LED remains on).• Manual Fan Speed:-− RPM control during Lo cool− RPM control during Hi & Me cool24CS-V18DKE CU-V18DKE / CS-V24DKE CU-V24DKE