--- title: "Sub-Zero UC-15I ICE light flashing blue: automatic shut-off" description: "What ICE flashing blue means on Sub-Zero UC-15I ICE light flashing blue: automatic shut-offs, what to check before booking, and when it is not a failure at all." url: "https://icemakerrepair.center/error-codes/sub-zero-ice-flashing-blue/" --- # Sub-Zero UC-15I ICE light flashing blue: automatic shut-off On the UC-15I undercounter ice maker, a flashing blue ICE light means the unit went into automatic shut-off. ## What ICE flashing blue actually means. On the UC-15I undercounter ice maker, a flashing blue ICE light means the unit went into automatic shut-off. Sub-Zero names two triggers: two maximum-length freeze and harvest cycles in a row (55 minutes each), or 120 cycles in a row, about two days, without the bin switch sensing a full bin. Sub-Zero ice maker display · also shown as ICE indicator flashing What to do when ICE flashing blue shows on the ice maker ### Kind of code Ice making and harvest The ice maker froze a batch and could not release it, or the harvest never started: the ejector arm or the twisting tray stalled, the mold heater did not loosen the cubes, or the arm that senses a full bin reported the wrong thing. Ice jammed against the arm and a bin pushed in crooked are cleared first; a motor module or a whole ice maker assembly comes after. ### Usually leads to Ice maker assembly replacement A new ice maker module fitted in the freezer compartment or the door compartment, after the water, the temperature and the bin sensor have been proved good, so the new part is not blamed for an old problem. ### Shows up as Ice Maker Light Flashing An ice maker light flashing where it used to glow steadily: a blinking power or ice light, a flashing clean or descale symbol, an add-water light, or a status light on the ice maker itself. ### Make Sub-Zero Sub-Zero ice maker service, for ice makers in built-in units and those under the counter. ### Source Sub-Zero answer: UC-15I not running with ice indicator flashing Sub-Zero UC-15I undercounter ice makers, indoor and outdoor. Built-in refrigerators with ice makers use numeric codes instead. ## Before you book, in this order. Each step comes from Sub-Zero's own guidance for ICE flashing blue on its ice makers. Follow it to the end: the last card says whether this is a visit. 01 Make sure the water supply to the unit is turned on; the shutoff may be behind the kickplate, in a nearby cabinet or on a lower floor. 02 If the water was off, give the unit an hour; it should drop one or two batches of ice. 03 If a water filter is fitted, take it out and see whether ice making resumes, then book a visit if it does not. ### Still there? It usually turns into [ice maker assembly replacement](https://icemakerrepair.center/services/ice-maker-assembly-replacement/). Book with the code and the model number. ### What not to do A flashing ICE light is not a power or display problem. It is the ice maker's own protective stop after it failed to make ice normally. ## What you may notice with it. The ice maker problems ICE flashing blue tends to arrive with. Answer these at the ice maker before anyone is booked. [All problems](https://icemakerrepair.center/problems/) Before you call ### [Ice Maker Light Flashing](https://icemakerrepair.center/problems/ice-maker-light-flashing/) [All 6 causes, cheapest first](https://icemakerrepair.center/problems/ice-maker-light-flashing/) It also comes with - [**No Ice Coming From the Ice Maker**](https://icemakerrepair.center/problems/ice-maker-not-making-ice/) - [**Ice Maker Making Small or Hollow Cubes**](https://icemakerrepair.center/problems/ice-maker-making-small-or-hollow-cubes/) - [**Ice Maker Error Code**](https://icemakerrepair.center/problems/ice-maker-error-code/) Problem ### Ice Maker Light Flashing 6 causes, cheapest first Where ICE flashing blue usually leads ## Ice maker assembly replacement. **Ice maker module, mold or twisting tray · moderate.** Book a visit [What the job involves](https://icemakerrepair.center/services/ice-maker-assembly-replacement/) ## Sub-Zero ice makers. Sub-Zero ice maker service, for ice makers in built-in units and those under the counter. [Sub-Zero ice maker repair](https://icemakerrepair.center/brands/sub-zero/) More Sub-Zero codes [EC30](https://icemakerrepair.center/error-codes/sub-zero-ec30/) [30 8 05](https://icemakerrepair.center/error-codes/sub-zero-30-8-05/) [30 8 10](https://icemakerrepair.center/error-codes/sub-zero-30-8-10/) [30 8 30](https://icemakerrepair.center/error-codes/sub-zero-30-8-30/) [30 9 01](https://icemakerrepair.center/error-codes/sub-zero-30-9-01/) [30 9 10](https://icemakerrepair.center/error-codes/sub-zero-30-9-10/) [30 9 86](https://icemakerrepair.center/error-codes/sub-zero-30-9-86/) [40 8 40](https://icemakerrepair.center/error-codes/sub-zero-40-8-40/) [40 8 01](https://icemakerrepair.center/error-codes/sub-zero-40-8-01/) [40 9 40](https://icemakerrepair.center/error-codes/sub-zero-40-9-40/) [50 U 86](https://icemakerrepair.center/error-codes/sub-zero-50-u-86/) [50 U 87](https://icemakerrepair.center/error-codes/sub-zero-50-u-87/) [All 15 Sub-Zero codes](https://icemakerrepair.center/error-codes/#codes-sub-zero) Ice making and harvest on other makes [Bertazzoni EO](https://icemakerrepair.center/error-codes/bertazzoni-eo/) [Café CI](https://icemakerrepair.center/error-codes/cafe-ci/) [GE Profile CI](https://icemakerrepair.center/error-codes/ge-profile-ci/) [GE CI](https://icemakerrepair.center/error-codes/ge-ci/) [Kenmore Er It](https://icemakerrepair.center/error-codes/kenmore-er-it/) [LG It](https://icemakerrepair.center/error-codes/lg-it/) [Monogram CI](https://icemakerrepair.center/error-codes/monogram-ci/) [Samsung 39E](https://icemakerrepair.center/error-codes/samsung-39e/) [All 21 codes of this kind](https://icemakerrepair.center/error-codes/#family-harvest) Sub-Zero builds this ### Door ice maker The ice maker that feeds the dispenser on the outside of a door: tucked into an insulated box in the left door of a French door model, or at the top of the freezer side of a side-by-side, with a chute and an auger carrying cubes to your glass. Sub-Zero builds this ### Freezer ice maker The ice maker that sits inside the freezer compartment itself, a tray that twists or a mold with a heater and an ejector, dropping cubes into a bin or drawer you open by hand, with no dispenser on the door. Sub-Zero builds this ### Undercounter ice maker A built-in residential ice maker that lives under a kitchen, bar or basement counter, making clear cubes or chewable nugget ice on its own cooling system, with a water line in and a gravity drain or a small drain pump out. ## In Sub-Zero's own words > Two consecutive maximum freeze and harvest cycles (55 minutes per cycle). [Sub-Zero answer: UC-15I not running with ice indicator flashing](https://www.subzero-wolf.com/assistance/answers/sub-zero/undercounter-ice-makers/uc15i-ice-maker-not-running-with-ice-indicator-flashing) [Sub-Zero answer: UC-15I not running with ice indicator flashing](https://www.subzero-wolf.com/assistance/answers/sub-zero/undercounter-ice-makers/uc15i-ice-maker-not-running-with-ice-indicator-flashing) [Sub-Zero answer: UC-15I not running with ice indicator flashing](https://www.subzero-wolf.com/assistance/answers/sub-zero/undercounter-ice-makers/uc15i-ice-maker-not-running-with-ice-indicator-flashing) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Sub-Zero UC-15I undercounter ice makers, indoor and outdoor. Built-in refrigerators with ice makers use numeric codes instead. ## Sub-Zero ICE flashing blue ice maker repair, where we come out. The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered. 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Make sure the water supply to the unit is turned on; the shutoff may be behind the kickplate, in a nearby cabinet or on a lower floor. If it comes back, it needs a visit. ### Why is the ICE light on my Sub-Zero undercounter ice maker blinking blue? The unit has put itself into automatic shut-off, usually because it was not getting water or its cycles ran far too long. Check the water supply first. ### Can the water filter cause the ICE light to flash on a Sub-Zero UC-15I? Yes. A clogged filter limits flow, and Sub-Zero suggests removing the filter to see if ice making resumes. The UC-15I bypasses the filter when it is out, so it keeps getting water. ### How long should I wait after turning the water back on at my UC-15I? About an hour. Sub-Zero expects one or two batches of ice in that time; if none drop, the unit needs a technician. --- **[Read on the site: Sub-Zero UC-15I ICE light flashing blue: automatic shut-off](https://icemakerrepair.center/error-codes/sub-zero-ice-flashing-blue/)** **[Book a visit with IceMakerRepair.center](https://icemakerrepair.center/schedule/)**