--- title: "Sub-Zero Classic CL 40 8 01: too much water sent to the ice maker" description: "What 40 8 01 means on Sub-Zero Classic CL 40 8 01: too much water sent to the ice makers, what to check before booking, and when it is not a failure at all." url: "https://icemakerrepair.center/error-codes/sub-zero-40-8-01/" --- # Sub-Zero Classic CL 40 8 01: too much water sent to the ice maker On Classic Series (CL) models, 40 8 01 means the control counted an excessive fill of the ice maker. ## What 40 8 01 actually means. On Classic Series (CL) models, 40 8 01 means the control counted an excessive fill of the ice maker. Too much water in the mold can spill into the bin and freeze cubes together into a block. Sub-Zero ice maker display · also shown as 40-8-01, 40801 What to do when 40 8 01 shows on the ice maker ### Kind of code Water supply and fill The ice maker asked for water and got too little, too slowly or none at all, or water kept arriving after the fill should have ended. A closed shutoff, a kinked line, a clogged filter and low house pressure are ruled out before the water inlet valve is replaced or the fill tube is thawed. If water is on the floor, close the supply valve before reading anything on the display. ### Usually leads to Ice maker water inlet valve repair The electric valve that lets water into the ice maker, tested and replaced when it will not open, opens only partway, or keeps dripping after it should have closed. ### Shows up as Ice Clumped or Frozen in the Bin The cubes have fused into one solid block, a sheet of ice covers the bottom of the bin, or ice clumping in the ice maker bin keeps coming back after you break it up. ### Make Sub-Zero Sub-Zero ice maker service, for ice makers in built-in units and those under the counter. ### Source Sub-Zero answer: Classic Series (CL) excessive ice maker fill, error 40 8 01 Sub-Zero Classic Series (CL) models with an automatic ice maker. Older Classic (BI) models use a different fill code. ## Before you book, in this order. Each step comes from Sub-Zero's own guidance for 40 8 01 on its ice makers. Follow it to the end: the last card says whether this is a visit. 01 Check the ice bin for a frozen block or water and empty it if needed. 02 Switch the unit's home breaker off for 30 seconds and back on, then watch the next fill. 03 If 40 8 01 comes back or water appears in the freezer, close the water shutoff and book a visit. ### Still there? It usually turns into [ice maker water inlet valve repair](https://icemakerrepair.center/services/water-inlet-valve-repair/). Book with the code and the model number. ### What not to do 40 8 01 is not a cooling problem in the freezer. It concerns how much water the ice maker receives on each fill. ## What you may notice with it. The ice maker problems 40 8 01 tends to arrive with. Answer these at the ice maker before anyone is booked. [All problems](https://icemakerrepair.center/problems/) Before you call ### [Ice Clumped or Frozen in the Bin](https://icemakerrepair.center/problems/ice-clumped-or-frozen-in-bin/) [All 5 causes, cheapest first](https://icemakerrepair.center/problems/ice-clumped-or-frozen-in-bin/) It also comes with - [**Ice Maker Leaking on the Floor**](https://icemakerrepair.center/problems/ice-maker-leaking-on-floor/) - [**No Ice Coming From the Ice Maker**](https://icemakerrepair.center/problems/ice-maker-not-making-ice/) - [**Ice Maker Error Code**](https://icemakerrepair.center/problems/ice-maker-error-code/) Problem ### Ice Clumped or Frozen in the Bin 5 causes, cheapest first Where 40 8 01 usually leads ## Ice maker water inlet valve repair. **Water inlet valve and its fittings · low to moderate.** Book a visit [What the job involves](https://icemakerrepair.center/services/water-inlet-valve-repair/) ## 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 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/) [ICE flashing blue](https://icemakerrepair.center/error-codes/sub-zero-ice-flashing-blue/) [All 15 Sub-Zero codes](https://icemakerrepair.center/error-codes/#codes-sub-zero) Water supply and fill on other makes [Café Making Ice and Filter lights flashing alternately](https://icemakerrepair.center/error-codes/cafe-making-ice-and-filter-lights-flashing-alternately/) [GE Profile Leak Detected](https://icemakerrepair.center/error-codes/ge-profile-leak-detected/) [GE Leak Detected](https://icemakerrepair.center/error-codes/ge-leak-detected/) [JennAir Replace Filter light flashing](https://icemakerrepair.center/error-codes/jennair-replace-filter-light-flashing/) [Kenmore Er gF](https://icemakerrepair.center/error-codes/kenmore-er-gf/) [KitchenAid Replace Filter light flashing](https://icemakerrepair.center/error-codes/kitchenaid-replace-filter-light-flashing/) [LG gF](https://icemakerrepair.center/error-codes/lg-gf/) [Liebherr IceMaker ON/OFF lamp flashing](https://icemakerrepair.center/error-codes/liebherr-icemaker-lamp-flashing/) [All 36 codes of this kind](https://icemakerrepair.center/error-codes/#family-water) 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 > Excessive Ice Maker Fill [Sub-Zero answer: Classic Series (CL) excessive ice maker fill, error 40 8 01](https://www.subzero-wolf.com/assistance/answers/sub-zero/next-classic/classic-series-cl-excessive-ice-maker-fill-error-40-8-01) [Sub-Zero answer: Classic Series (CL) excessive ice maker fill, error 40 8 01](https://www.subzero-wolf.com/assistance/answers/sub-zero/next-classic/classic-series-cl-excessive-ice-maker-fill-error-40-8-01) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Sub-Zero Classic Series (CL) models with an automatic ice maker. Older Classic (BI) models use a different fill code. ## Sub-Zero 40 8 01 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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Check the ice bin for a frozen block or water and empty it if needed. If it comes back, it needs a visit. ### What does 40 8 01 look like in a Sub-Zero CL freezer? Often cubes fused into a slab, an overfilled mold or ice spilling over the edge of the bin. The control has counted more water going to the ice maker than it should. ### Is 40 8 01 on a Sub-Zero CL a reason to shut off the water? If you see water in the freezer or on the floor, yes. If the bin is just clumped and the code clears after a breaker reset, keep an eye on the next few fills. ### Can 40 8 01 clear by itself on a Sub-Zero? Sub-Zero says no action is needed if the unit runs without further codes after the breaker reset. A repeat means the valve or ice maker needs testing. --- **[Read on the site: Sub-Zero Classic CL 40 8 01: too much water sent to the ice maker](https://icemakerrepair.center/error-codes/sub-zero-40-8-01/)** **[Book a visit with IceMakerRepair.center](https://icemakerrepair.center/schedule/)**