A Samsung refrigerator has a filter indicator light to inform you when it is time to change the water filter. The light starts out in either a blue or green colour, indicating a fresh filter. The light changes to yellow or orange once the filter is five months old. When the light turns red, the filter requires changing. Once you replace the filter with a new one, the indicator light should revert back to a blue or green light. If the red filter indicator on your Samsung refrigerator won't turn off, there is a way to force the reset.
Open the refrigerator door and ensure that the filter is installed correctly. The filter should fully seat inside the housing. If the filter does not seat fully, the indicator does not recognise a new filter. Remove and reinstall the filter.
Find the "Child Lock" and "Ice Type" push buttons on the control panel, if the red indicator light remains illuminated.
Press and hold both buttons at the same time for three seconds. The indicator light will illuminate in a blue colour. The filter indicator is now reset.
If the light still fails to reset, call a service professional to service the filtration system. Most likely there is a short in the wires between the filter and the control console.