What is the Power Freeze function and how do I activate it?

Power Freeze lowers the freezer temperature and speeds up the freezing process by running the freezer at full power for several hours before returning to normal operation. To activate it, press and hold the Freezer button for 3 seconds until the corresponding indicator lights up. To freeze large amounts of food, activate Power Freeze at least 20 hours before putting food in the freezer. Note that using Power Freeze increases power consumption. (Page 20)