If your Samsung refrigerator is not cooling properly, you may need to reset the freezer temperature. To do this, first make sure that the fridge is turned off. Then, locate the control panel on the front of the fridge. Locate the Freezer button and press it for three seconds. The display will then show the current freezer temperature. Use the up or down arrow keys to adjust the temperature as desired. Once you have set the new temperature, press the Freezer button again for three seconds to save your settings.