--- title: "Atosa blue D8 light flashing slowly: the ice machine is short of water" description: "What D8 blue LED flashing slowly means on Atosa blue D8 light flashing slowly: the ice machine is short of waters, what to check before booking, and when it is…" url: "https://icemachinerepair.center/error-codes/atosa-d8-blue-led-flashing-slowly/" --- # Atosa blue D8 light flashing slowly: the ice machine is short of water The blue D8 light is the water level indicator. ## What D8 blue LED flashing slowly actually means. The blue D8 light is the water level indicator. Steady means the probe is touching water; a slow one-second flash is the water lack protection, set when the probe stays dry for 5 minutes during freezing. Atosa's list: no supply, a closed ball valve, a leaking trough, the inlet valve or the probe. Atosa ice machine display What to do when D8 blue LED flashing slowly shows on the ice machine ### Kind of code Water supply The water side came up short: the trough did not fill in the time allowed, the float or level probe never saw water, or water kept flowing when the inlet valve should have closed. A supply valve left partly shut, a clogged filter cartridge, low building pressure or a sticking inlet valve are the usual causes. Opening the valve fully and fitting a fresh filter clears the simple cases; a valve that hums without passing water is a visit. ### Usually leads to Ice machine water valve and filter repair The inlet valve, filter, sump float or level probe and supply line, tested and replaced when water arrives short, dirty or nonstop. ### Shows up as Ice Machine Error Code or Flashing Light: What It Is Telling You An ice machine error code may show as a number on a small display, a pattern of blinking lights on the control board, a colored light on the front, or a machine that stops with one indicator flashing. ### Make Atosa An Atosa ice machine visit opens with the water supply and the air around the condenser, and only then turns to the harvest. ### Source Atosa YR140/YR280/YR450/YR800-AP-161 ice machine manual YR140, YR280, YR450 and YR800 AP-161/261 LED board; the HD350 hotel dispenser manual shows the same pattern. Display models report water shortage as E5. ## Before you book, in this order. Each step comes from Atosa's own guidance for D8 blue LED flashing slowly on its ice machines. Follow it to the end: the last card says whether this is a visit. 01 Check that the ball valve on the water line is open and the supply is on. 02 Check the included water filter for a clogged cartridge. 03 Look for water leaking from the trough inside the door. 04 If the blue light keeps flashing with water available, book a visit to check the inlet valve and probe. ### Still there? It usually turns into [ice machine water valve and filter repair](https://icemachinerepair.center/services/ice-machine-water-valve-and-filter-repair/). Book with the code and the model number. ### What not to do A steady blue D8 is normal and means the probe sees water. The Atosa manual numbers this protection differently in two sections, so go by the light, not an E number. ## What you may notice with it. The ice machine problems D8 blue LED flashing slowly tends to arrive with. Answer these at the ice machine before anyone is booked. [All problems](https://icemachinerepair.center/problems/) Before you call ### [Ice Machine Error Code or Flashing Light: What It Is Telling You](https://icemachinerepair.center/problems/ice-machine-error-code/) [All 7 causes, cheapest first](https://icemachinerepair.center/problems/ice-machine-error-code/) It also comes with - [**Ice Machine Running but Not Making Ice**](https://icemachinerepair.center/problems/ice-machine-not-making-ice/) - [**Ice Machine Leaking Water Across the Floor or Under the Bin**](https://icemachinerepair.center/problems/ice-machine-leaking-water/) Problem ### Ice Machine Error Code or Flashing Light: What It Is Telling You 7 causes, cheapest first Where D8 blue LED flashing slowly usually leads ## Ice machine water valve and filter repair. **Inlet valve, sump float or level probe, supply line and filter head · low to moderate.** Book a visit [What the job involves](https://icemachinerepair.center/services/ice-machine-water-valve-and-filter-repair/) ## Atosa ice machines. An Atosa ice machine visit opens with the water supply and the air around the condenser, and only then turns to the harvest. [Atosa ice machine repair](https://icemachinerepair.center/brands/atosa/) More Atosa codes [FUL](https://icemachinerepair.center/error-codes/atosa-ful/) [E1](https://icemachinerepair.center/error-codes/atosa-e1/) [E2](https://icemachinerepair.center/error-codes/atosa-e2/) [E3](https://icemachinerepair.center/error-codes/atosa-e3/) [E4](https://icemachinerepair.center/error-codes/atosa-e4/) [E5](https://icemachinerepair.center/error-codes/atosa-e5/) [E6](https://icemachinerepair.center/error-codes/atosa-e6/) [E7](https://icemachinerepair.center/error-codes/atosa-e7/) [E8](https://icemachinerepair.center/error-codes/atosa-e8/) [D9 red LED flashing fast](https://icemachinerepair.center/error-codes/atosa-d9-red-led-flashing-fast/) [D9 red LED flashing slowly](https://icemachinerepair.center/error-codes/atosa-d9-red-led-flashing-slowly/) Water supply on other makes [Blue Air E5](https://icemachinerepair.center/error-codes/blue-air-e5/) [Follett LO WATER](https://icemachinerepair.center/error-codes/follett-lo-water/) [Hoshizaki 5 beeps](https://icemachinerepair.center/error-codes/hoshizaki-5-beeps/) [Ice-O-Matic Error 3](https://icemachinerepair.center/error-codes/ice-o-matic-error-3/) [KitchenAid Order Filter](https://icemachinerepair.center/error-codes/kitchenaid-order-filter/) [Koolaire SL#1 + SL#2](https://icemachinerepair.center/error-codes/koolaire-sl3/) [Manitowoc E20](https://icemachinerepair.center/error-codes/manitowoc-e20/) [Marvel Er15](https://icemachinerepair.center/error-codes/marvel-er15/) [All 25 codes of this kind](https://icemachinerepair.center/error-codes/#family-water) Atosa builds this ### Modular ice machine An ice-making head set on top of a separate storage bin or drink dispenser, cooled by air, water or a condenser on the roof, turning out hundreds of pounds of cubes a day. Atosa builds this ### Undercounter ice machine A self-contained ice machine that makes and stores its own ice under a bar, a service counter or a kitchen island, from commercial units to clear-ice models in large homes. Atosa builds this ### Ice and water dispenser A countertop or floor-standing unit in a hotel hallway, an office or a clinic that makes and stores ice and hands it out with water at the touch of a lever, a button or a sensor. ## In Atosa's own words > D8 flash slow——1s on 1s off，E3，water lack protection. [Atosa YR140/YR280/YR450/YR800-AP-161 ice machine manual](https://atosausa.com/wp-content/uploads/2023/10/IceMakerManual_YR140-AP-161_YR280-AP-161_YR450-AP-161_YR800-AP-161.pdf) [Atosa YR140/YR280/YR450/YR800-AP-161 ice machine manual](https://atosausa.com/wp-content/uploads/2023/10/IceMakerManual_YR140-AP-161_YR280-AP-161_YR450-AP-161_YR800-AP-161.pdf) [Atosa YR140/YR280/YR450/YR800-AP-161 ice machine manual](https://atosausa.com/wp-content/uploads/2023/10/IceMakerManual_YR140-AP-161_YR280-AP-161_YR450-AP-161_YR800-AP-161.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. YR140, YR280, YR450 and YR800 AP-161/261 LED board; the HD350 hotel dispenser manual shows the same pattern. Display models report water shortage as E5. ## Atosa D8 blue LED flashing slowly ice machine 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 that the ball valve on the water line is open and the supply is on. If it comes back, it needs a visit. ### My Atosa manual calls water shortage E3 in one place and E4 in another. Which is it? The manual contradicts itself, so use the light: a blue D8 flashing once a second is the water shortage protection on this board. ### Can a leaking trough make the blue light flash on my Atosa? Yes. Water escaping from the trough keeps the probe dry, and Atosa lists it among the causes. ### What should the blue D8 light normally do on an Atosa? Stay on while the probe is in water and go off when it is not. Only the slow flash signals the shortage protection. --- **[Read on the site: Atosa blue D8 light flashing slowly: the ice machine is short of water](https://icemachinerepair.center/error-codes/atosa-d8-blue-led-flashing-slowly/)** **[Book a visit with IceMachineRepair.center](https://icemachinerepair.center/schedule/)**