In order to select the Turbo mode make sure that you have selected the Cool Mode. Set teperature you require with the help of the remote control and then select the TURBO Mode. Once TURBO mode is On the fan speed of the unot will speed up and the compressor will switch on immdiately which will help in achieving the cooling you require quickly. Note that a turbo mode will only function if the temperature you have set is less than the room temperature.