--- title: "Sub-Zero Ice Maker Repair | IceMakerRepair.center" description: "Sub-Zero ice maker repair. Sub-Zero ice maker service, for ice makers in built-in units and those under the counter." url: "https://icemakerrepair.center/brands/sub-zero/" --- # Sub-Zero Ice Maker Repair Sub-Zero ice maker service, for ice makers in built-in units and those under the counter. ## Sub-Zero ice makers, specifically. Sub-Zero makes ice in three places: the UC-15I undercounter ice maker, the ice drawer of its column freezers, and the freezer of built-in models, some with an external dispenser on the door. Its built-in controls report ice and water trouble with three-part codes such as 30 8 05, while the undercounter unit speaks through lights. The Sub-Zero lineup ### Builds 3 ice maker types Door ice maker · Freezer ice maker · Undercounter ice maker ### Called out for No Ice Coming From the Ice Maker and 6 more problems on Sub-Zero ### Repairs we do 10 repairs, on any make Diagnostic visit · Ice maker assembly replacement · Ice maker water inlet valve repair · Frozen fill tube repair ### Error codes EC30 · 30 8 05 · 30 8 10 · 30 8 30 · 30 9 01 15 Sub-Zero codes with a page of their own ## The Sub-Zero lineup. Sub-Zero builds 3 of the 4 ice maker types this site covers. Which one decides how the visit is planned. [All ice maker types](https://icemakerrepair.center/types/) Door ### Door ice maker **5** of the problems we see on Sub-Zero come up on it Door ice maker repair Freezer ### Freezer ice maker **1** of the problems we see on Sub-Zero come up on it Freezer ice maker repair Undercounter ### Undercounter ice maker **2** of the problems we see on Sub-Zero come up on it Undercounter ice maker repair ## What is particular to Sub-Zero. We see the UC-15I undercounter ice maker (indoor and outdoor), Designer column freezers with ice drawers, and Classic and Designer built-ins with and without dispensers. The series letters on the rating plate decide which code list and which ice maker module apply. ### Three-part codes for ice and water On Classic built-in models, codes that start with 30 cover the ice maker, dispenser and water parts, 40 marks something that ran past its time limit, and 50 U covers the water flow meter. Reading all three parts tells us whether to start at the valve, the ice maker or the supply line. ### A flow meter on the water line Classic built-ins measure incoming water and report low flow (50 U 86) or no flow (50 U 87) separately. That lets us separate a house pressure problem from a failing valve before we open anything. ### An undercounter unit that stops itself The UC-15I shuts down and flashes its blue ICE light after two over-long freeze and harvest cycles in a row or about two days without filling the bin. Most of those stops trace back to the water supply or a clogged filter. ### Water pressure and room limits The UC-15I guide asks for 20 to 80 psi at the supply and lists an ambient range for indoor and outdoor models. Low pressure or a hot outdoor bar is often the first thing we measure when production drops. Parts Ice maker modules, water valves, filters and dispenser parts are matched to the series and serial number. Parts for older built-ins may need to be ordered after the first visit. Repair or replace A built-in Sub-Zero with an ice problem is almost always repaired, because the problem sits in one module, valve or switch rather than the whole unit. An older UC-15I that needs a sealed-system repair and a new ice maker at once is the case where replacement is worth weighing. Book your Sub-Zero visit ## What we are called out for. On Sub-Zero, most often no ice coming from the ice maker. [All problems](https://icemakerrepair.center/problems/) Sub-Zero error codes - [`EC30` Water supply and fill](https://icemakerrepair.center/error-codes/sub-zero-ec30/) - [`30 8 05` Water supply and fill](https://icemakerrepair.center/error-codes/sub-zero-30-8-05/) - [`30 8 10` Control board and communication](https://icemakerrepair.center/error-codes/sub-zero-30-8-10/) - [`30 8 30` Water supply and fill](https://icemakerrepair.center/error-codes/sub-zero-30-8-30/) - [`30 9 01` Dispenser and auger](https://icemakerrepair.center/error-codes/sub-zero-30-9-01/) - [`30 9 10` Dispenser and auger](https://icemakerrepair.center/error-codes/sub-zero-30-9-10/) [All Sub-Zero codes](https://icemakerrepair.center/error-codes/#codes-sub-zero) ### No Ice Coming From the Ice Maker 7 causes, cheapest first ### Ice Maker Light Flashing 6 causes, cheapest first ### Ice Maker Making Small or Hollow Cubes 6 causes, cheapest first ### Ice Dispenser Not Working 6 causes, cheapest first ## Not a Sub-Zero? Sub-Zero is one of 27 ice maker makes on this site. The other 26 each have a page of their own. [All 27 brands](https://icemakerrepair.center/brands/) ## Sub-Zero ice maker repair, where we come out. 9 metros, each with its own page. 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The UC-15I has put itself into automatic shut-off, usually after it could not fill the bin normally. Check that the water is on, try the unit without its filter, and give it an hour to drop ice before booking a visit. ### What do the three numbers in a Sub-Zero ice code mean? On Classic built-ins, the first number is the group, the second the part and the third the exact condition. 30 8 05, for example, means no fill signal came from the ice maker. ### Can low water pressure stop a Sub-Zero from making ice? Yes. The UC-15I needs 20 to 80 psi, and Classic built-ins log low or no flow as 50 U 86 or 50 U 87. We check the supply before replacing any part. ### Does a Sub-Zero with an internal dispenser have an ice maker in the door? No. On internal dispenser models the dispenser sits inside the refrigerator and the ice maker stays in the freezer. Only the dispenser models with an external dispenser deliver ice through the door panel. --- **[Read on the site: Sub-Zero Ice Maker Repair | IceMakerRepair.center](https://icemakerrepair.center/brands/sub-zero/)** **[Book a visit with IceMakerRepair.center](https://icemakerrepair.center/schedule/)**