Whirlpool WRF555SDHV refrigerator water-filter light will not reset or filter message remains

The checks in more detail

so it means the schedule has come round, not that the water is bad. Replace the filter first. Find the filter in the position shown in the manual, often in the upper corner of the fresh-food compartment or in the base grille. Remove the old filter by turning it, following the arrow and the instructions, and insert the new EveryDrop filter that matches the model, pushing it in until it clicks; a filter that is not fully seated leaks or does not seal.

Run water through the dispenser for several minutes, a few glasses at a time, to purge the air and the carbon dust from the new cartridge; sputtering water and air bubbles at first are normal and clear as you run it. Then reset the message. After a new filter is fitted, the control does not know, so you must tell it: press and hold the filter reset key, or the keys the manual names, for about three seconds until the light or the message changes or a tone sounds.

Some models need you to hold the keys for longer, and some display a status of Replace Filter until you do. If the message stays on after a reset with a new filter, try the reset again with the door closed and the dispenser idle, and check that the filter is the right one. If water is slow after a new filter, run more water to clear the air, and check the water supply line for a kink. If the message or the flow does not improve, contact Whirlpool with WRF555SDHV and the serial number.