Every ice maker follows the same chain: the freezer gets cold enough, the control module signals the water inlet valve, the valve opens, water travels up a fill tube into the mold, it freezes, and the harvest arm or optics drop the cubes. When no ice comes out, the question is simply where in that chain the water stopped — and you can usually find it without tools.

The small plastic or rubber fill tube that carries water from the valve to the ice mold is the single most frequent failure point — and it’s not a broken part at all. When the freezer runs slightly warm or a previous fill dribbled, a little water freezes in the tube, and each cycle adds to the plug until no water can pass. The mold stays dry, the ice maker keeps cycling on schedule, and you get nothing.

The fix is to thaw it:

The water inlet valve is an electrically controlled solenoid that opens to let water through to the ice maker and dispenser. It fails by sticking shut, clogging with mineral sediment, or losing electrical continuity. On the huge Whirlpool family — Whirlpool, Maytag, KitchenAid, Kenmore — the common valve is part W10408179 (around $25), with WP2315576 as another frequent fit depending on model. Always verify against your model number.

Two specs decide whether the valve is the culprit. It needs at least 20 psi of water pressure to open and flow properly, and a healthy solenoid reads a resistance between roughly 500Ω and 1.5kΩ on a multimeter — anything outside that range means the valve is dead. To test pressure, shut the valve, disconnect the inlet hose into a bucket, and open it; a weak trickle points at low house pressure or a kinked line rather than the valve. A buzzing or humming from the valve area with no water getting through is the classic stuck-valve signature.

An ice maker won’t reliably make ice if the freezer isn’t cold enough. The mold needs to reach roughly 15°F or below for the harvest cycle to trigger; above that, water sits in the mold without freezing solid, and the maker either does nothing or drops slush. Before condemning any part, confirm the freezer is at 0°F to 5°F with a thermometer.

A freezer that’s drifted warm points at a separate problem — a failing defrost system, a packed freezer blocking airflow, or a door not sealing — and the ice maker is just the first symptom you noticed. Overpacking the freezer, especially the top shelf near the ice maker on in-door units, is a frequent and overlooked cause.

No water reaches the valve if the supply is choked. A clogged water filter is the easy one: most manufacturers want the filter changed every six months, and a neglected filter restricts flow enough to starve the ice maker while the dispenser still trickles. Beyond the filter, the saddle valve at the house supply can clog, and the line itself can kink behind the fridge or freeze where it runs through a cold section. If the dispenser water is also slow or dead, the problem is the shared supply, not the ice maker specifically.

If water fills, freezes, but cubes never drop, the harvest side has failed. Older mechanical ice makers use an ejector and a thermostat; many newer Whirlpool units use an optical sensor — an emitter and receiver board (parts such as W10757851 or the ice level control W11629974) that “sees” how full the bin is. When the optics fail or get blocked, the maker either stops making ice thinking the bin is full, or never stops.

Because many of these components aren’t sold individually, a failed module often means replacing the whole ice maker assembly (for example Whirlpool 2198597). The diagnostic order matters: confirm 120V at the module, clear the optics line-of-sight, verify freezer temperature, and only then replace the assembly.

These include our $99 service call applied to the repair, and match the part-light, labor-driven pattern of other refrigerator jobs.

Not every ice maker failure is normal wear. Samsung’s French-door refrigerators with external ice dispensers became the subject of a long-running class action alleging the ice makers were prone to frosting over, jamming, leaking water inside and out, and generating loud fan noise — affecting models manufactured across roughly 2013 to 2017. The case was ordered to mediation and ultimately dismissed in January 2024 after Samsung extended individual settlement offers; there has never been an official recall.