--- title: "Atosa E3: the ice machine water temperature sensor is disconnected" description: "What E3 means on Atosa E3: the ice machine water temperature sensor is disconnecteds, what to check before booking, and when it is not a failure at all." url: "https://icemachinerepair.center/error-codes/atosa-e3/" --- # Atosa E3: the ice machine water temperature sensor is disconnected The newer Atosa control reads the temperature of the water it freezes. ## What E3 actually means. The newer Atosa control reads the temperature of the water it freezes. If that sensor is unplugged or open, the board shows E3 and stops. Atosa's steps are to check the sensor connection and then have it serviced. Atosa ice machine display What to do when E3 shows on the ice machine ### Kind of code Sensors and bin control A sensor is telling the board something that is not true: a bin control that reads full on an empty bin, or empty while ice spills over the top, a curtain switch stuck open, a temperature sensor out of range, or an eye on a dispenser that no longer sees the cup. Scale and slime on a probe or an ultrasonic sensor cause much of it. Clearing ice piled against the bin control is a safe first step; testing and replacing a sensor is a technician's. ### Usually leads to Ice machine bin control repair The thermostat bulb, paddle, curtain switch or electronic eye that senses a full bin, adjusted or replaced so the machine stops and restarts on time. ### 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 ice equipment user manual, YRU/YDS/YRS/YRM/YRL/BYR series (2025) YRS, YRM, YRU, YDS and YRL display series (2025 manual). The earlier YR-AP-161 manual gives E3 two different meanings in two sections, so its LED board is not covered by this entry. ## Before you book, in this order. Each step comes from Atosa's own guidance for E3 on its ice machines. Follow it to the end: the last card says whether this is a visit. 01 Switch the machine off and on once to see if E3 returns. 02 If the machine was just cleaned, mention it at booking, since parts removed for cleaning sit near the sensor wiring. 03 Book a visit to reconnect or replace the sensor. ### Still there? It usually turns into [ice machine bin control repair](https://icemachinerepair.center/services/ice-machine-bin-control-repair/). Book with the code and the model number. ### What not to do On the display models E3 is not a water shortage, which is E5. The older Y-series manual used the label E3 for other protections, so it does not apply here. ## What you may notice with it. The ice machine problems E3 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/) Problem ### Ice Machine Error Code or Flashing Light: What It Is Telling You 7 causes, cheapest first Where E3 usually leads ## Ice machine bin control repair. **Bin thermostat, paddle, curtain switch or ice-level sensor · low.** Book a visit [What the job involves](https://icemachinerepair.center/services/ice-machine-bin-control-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/) [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/) [D8 blue LED flashing slowly](https://icemachinerepair.center/error-codes/atosa-d8-blue-led-flashing-slowly/) Sensors and bin control on other makes [Blue Air E6](https://icemachinerepair.center/error-codes/blue-air-e6/) [Ice-O-Matic Error 2](https://icemachinerepair.center/error-codes/ice-o-matic-error-2/) [Manitowoc E12](https://icemachinerepair.center/error-codes/manitowoc-e12/) [Marvel OFF flashing](https://icemachinerepair.center/error-codes/marvel-off-flashing/) [Maxx Ice Blinking exclamation mark](https://icemachinerepair.center/error-codes/maxx-ice-exclamation-mark/) [Monogram Door alarm](https://icemachinerepair.center/error-codes/monogram-door-alarm/) [Scotsman 5](https://icemachinerepair.center/error-codes/scotsman-5/) [True Residential E9](https://icemachinerepair.center/error-codes/true-e9/) [All 22 codes of this kind](https://icemachinerepair.center/error-codes/#family-sensor) 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 > 1.Check the water temperature sensor connection E3 Water temperature sensor disconnected [Atosa ice equipment user manual, YRU/YDS/YRS/YRM/YRL/BYR series (2025)](https://atosausa.com/wp-content/uploads/2026/06/Ice-Machine-Manual-082025.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. YRS, YRM, YRU, YDS and YRL display series (2025 manual). The earlier YR-AP-161 manual gives E3 two different meanings in two sections, so its LED board is not covered by this entry. ## Atosa E3 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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Switch the machine off and on once to see if E3 returns. If it comes back, it needs a visit. ### What does E3 mean on an Atosa ice machine with a display? The water temperature sensor is disconnected. The machine stops until the sensor is reconnected or replaced. ### My older Atosa manual says E3 is high pressure. Which is right? Both describe different boards. The older LED board manual gives E3 two meanings; the newer display models use E3 only for the water temperature sensor. ### Can I keep using my Atosa with E3 showing? No, it will not make ice with the sensor missing. Book a visit. --- **[Read on the site: Atosa E3: the ice machine water temperature sensor is disconnected](https://icemachinerepair.center/error-codes/atosa-e3/)** **[Book a visit with IceMachineRepair.center](https://icemachinerepair.center/schedule/)**