--- title: "How to Clean a U-Line Ice Machine, Including the Nugget" description: "How to clean u line ice maker: cleaning a U-Line ice machine or nugget ice maker: the cleaning signal, the cycle, the reservoir, the rinse — and why the…" url: "https://ulinemiami.support/blog/how-to-clean-a-u-line-ice-machine/" date_modified: "2026-08-29" Category: "Maintenance & Prevention" --- # How to Clean a U-Line Ice Machine, Including the Nugget ## How to clean u line ice maker: the machine asks, and it does not stop asking U-Line builds the reminder into the control. From the manual for the nugget machines: > After cumulative 6 months of ice making, the machine will signal that is time to run a cleaning cycle. On the display, the ice, no water, and drain lamps each flicker twice sequentially. The flickering lights continue until the machine's cleaning function is performed. Three lamps, flickering twice each in turn, over and over. It is not an error, nothing has failed, and nothing else on the machine looks like it. It is also very easy to live with for a year, which is how most of the machines we open have been treated. ## The sequence **Empty the bin first.** Whatever is in there is going in the sink at the end anyway. **Enter clean mode.** Hold the clean key for several seconds. On the models that have a dedicated clean button it is marked; on the others it is the same key that toggles zones. Add the cleaner as the manual for your model directs. **Let it run.** The machine cleans, drains and refills repeatedly for roughly ten minutes without any help. This is the part people interrupt, and interrupting it means starting again. **Do the reservoir by hand.** Sponge or cloth, using the solution that is left. The automatic cycle circulates; it does not scrub, and the reservoir is where the film is. **Rinse properly.** Clean water through the system, and pour some down the ice spout as well — the spout is outside the circulating path and it is the last thing the ice touches. **Throw the first batch away.** Every time. This is the step that gets skipped and it is the one everybody notices. ## Why the maker's own cleaner, specifically The manual says other cleaners can cause damage, and on this equipment that is a mechanical statement rather than a commercial one. A nugget machine circulates whatever you put into it past an auger, a freezing cylinder, a set of seals and a water pump. A clear ice machine circulates it past a dispense valve, a circulation pump and an inlet valve. Household descalers are formulated for kettles and shower heads, not for a food-contact machine with driven components and elastomer seals in the loop. Vinegar has a place on a door gasket. It does not have one here. ## Six months is optimistic in South Florida The interval assumes ordinary water. What comes out of the tap across Miami-Dade, Broward and Palm Beach is harder than that, and scale does not arrive politely — it narrows every water path in the machine at the same time. What it does, in order of how much it costs: - **The reservoir and the level sensing.** Scale on a float or a probe makes the machine misjudge how much water it has, which shows up as short fills, overfills, or a machine that stops for no visible reason.- **The evaporator surface.** Scale insulates. Ice takes longer to form, comes out cloudy or thin, and production drops before anything stops.- **The auger and the cylinder, on a nugget machine.** Abrasive deposits between a driven screw and the wall it runs against. This is where an ignored cleaning signal turns into a gearbox.- **The drain.** Narrowed the same way everything else is, which is how a cleaning problem becomes a water-on-the-floor problem. A practical rule for this climate: if the machine visibly scales between cycles, it wants a filter as well as a schedule. That is a recommendation rather than a rule, and it is worth asking about at the end of a visit. ## What cleaning will not fix - **A machine that stopped because the water stopped.** Check the shut-off valve, the filter and the line first; a cleaning cycle on a machine with no water supply will not complete.- **An auger that has already jammed.** That is a repair, and running a cycle against it does not help.- **Ice that has fused into a block in the bin.** That is usually a household that is not using much ice, not a dirty machine. ## The unglamorous point Descaling is the cheapest thing on this entire site and it prevents the most expensive. A nugget machine's auger, gearbox and cylinder assembly is the largest single ice-machine bill there is, and the most reliable way to arrive at it is to ignore three lamps flickering for a year. --- **[Read full article: How to Clean a U-Line Ice Machine, Including the Nugget](https://ulinemiami.support/blog/how-to-clean-a-u-line-ice-machine/)**