Ice Maker Not Working? Fixes (2026)

Check the water first: an empty or low tank is the cause more often than owners admit, and a kinked or frozen supply line starves plumbed units. On countertop models, confirm the tank is seated properly; the sensor will not run the pump otherwise. If water is fine, check ambient temperature: ice makers struggle above 90 F ambient, so a garage unit in August may simply be too hot to freeze. Give it shade and ventilation before assuming failure.

Low water pressure or a partially blocked inlet is the usual suspect: clean the inlet screen and confirm full flow. On tank models, low water level reduces fill per cycle. Scale on the evaporator also insulates it and shrinks cubes; run a manufacturer cleaning cycle with descaler. If cubes were fine and shrank gradually, scale is almost certainly the story.

Stale tank water is the top cause: empty and refill the reservoir, and do not let water sit for days between uses. Run a cleaning cycle with the manufacturer-recommended cleaner, then two rinse cycles. A new plastic taste fades after the first few batches; discard them. Persistent odors after cleaning suggest the bin needs a baking-soda scrub or the water source itself is the problem; try filtered water.

Unplug it and find the source before running it again. On countertop units, overfilling past the max line is the common cause, along with a bin that overflowed because the full sensor is iced over; empty and restart. On plumbed units, check the supply connection and the drain line for kinks or clogs; a clogged gravity drain backs water up fast. Cracked tanks and failed seals need parts, not troubleshooting.