Before anything else, notice exactly what the dispenser does. No sound and no water is a different problem from a motor you can hear with nothing arriving, and both differ from a trickle. That distinction narrows the cause more than any other single observation.
Checks That Cost Nothing
- Control lock. Whirlpool dispensers have a lock function that disables the pads, usually a press and hold on the control panel. It is easy to trigger while cleaning the front of the door. Your manual gives the exact sequence.
- Ice mode. On models that dispense both, confirm the panel is set to water rather than cubed or crushed ice.
- Filter status. If water stopped immediately after a filter change, the cartridge is the first suspect: not fully seated, or a model that does not match the housing. Refit it, or refit the old one, and see whether flow returns.
- Household supply. Check the shut-off valve feeding the refrigerator is fully open, and look behind the appliance for a kinked or pinched supply line, which happens easily after the refrigerator has been pushed back into place.
- Recent freeze. If the freezer has been set very cold, the fill line in the door can freeze. Turning the freezer back to a normal setting and waiting a day is a legitimate test.
What Needs a Technician
If the pads are unlocked, the filter is known good and the household valve is open, what remains sits behind panels and around live wiring: the inlet valve, the dispenser switch, the control board, or a fill tube that keeps freezing because of a door heater or seal issue. Those are diagnosis jobs rather than parts-swapping jobs, because several of them produce exactly the same symptom.
Two things to avoid while you wait. Do not pour hot water into the dispenser chute or the ice bucket to thaw a line, because sudden heat can crack plastic parts and the water ends up inside the door. And do not leave a supply line disconnected and taped, since the shut-off valve is the safe way to isolate it. Book a Whirlpool refrigerator repair visit and mention which of the three symptoms you have.