The ULTRAWF water filter is easy to install. Push to release the old filter. Push the new filter in until it clicks into place. Run water through the new filter for 3 minutes to prime it. Discard the water or use it to water plants. Your refrigerator’s reminder light does not turn off automatically. Most reminder lights are reset by pressing and holding the water filter button on the dispenser control for 3 seconds. When the display changes from red to green, the status has been reset Frigidaire genuine filters are certified by the water quality association to WQA/ASPE/ANSI S 803 for sustainability. Tested and certified by NSF International against NSF/ANSI Standards 42, 53 and 401. For details, see performance data sheet.