--- title: "Atosa E1: the ice machine's condenser temperature sensor is not reporting" description: "What E1 means on Atosa E1: the ice machine's condenser temperature sensor is not reportings, what to check before booking, and when it is not a failure at all." url: "https://icemachinerepair.center/error-codes/atosa-e1/" --- # Atosa E1: the ice machine's condenser temperature sensor is not reporting The board expects the condenser sensor to warm up while the machine makes ice. ## What E1 actually means. The board expects the condenser sensor to warm up while the machine makes ice. If the sensor is unplugged or its reading does not move, the board stops with E1. Atosa lists the sensor connection first and the cooling system second, because a system that is not running also leaves the reading flat. Atosa ice machine display What to do when E1 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). On the earlier YR140, YR280, YR450 and YR800 AP-161 LED board, E1 was the long-freeze protection shown by the red D9 LED flashing fast. ## Before you book, in this order. Each step comes from Atosa's own guidance for E1 on its ice machines. Follow it to the end: the last card says whether this is a visit. 01 Switch the machine off and back on once and note whether E1 returns. 02 Make sure the condenser fan area is clear and the machine is getting air. 03 Book a visit; the probe connection sits behind panels and the cooling system check needs a technician. ### 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 E1 is not a long freeze cycle, which is what the older Y-series LED board used the label E1 for. It is also not E4, which is a condenser that is too hot rather than a sensor that is silent. ## What you may notice with it. The ice machine problems E1 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 E1 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/) [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/) [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 > Condenser temperature sensor 1.Check the condenser temperature probe connection E1 disconnected or no temperature change [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) [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. YRS, YRM, YRU, YDS and YRL display series (2025 manual). On the earlier YR140, YR280, YR450 and YR800 AP-161 LED board, E1 was the long-freeze protection shown by the red D9 LED flashing fast. ## Atosa E1 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 back on once and note whether E1 returns. If it comes back, it needs a visit. ### Is E1 on my new Atosa the same as E1 in an older Atosa manual? No. The display models use E1 for the condenser temperature sensor, while the older LED board used E1 for a freeze cycle that ran too long. Go by the manual for your model series. ### Can a dirty condenser cause E1 on an Atosa? A dirty condenser is listed under E4, high condenser temperature. E1 is about the sensor not reporting a change, though a cooling system that is not running can cause it. ### Will my Atosa run with E1 on the display? No, it stops making ice until the sensor reading returns. Book a visit so the probe and the cooling system can be checked. --- **[Read on the site: Atosa E1: the ice machine's condenser temperature sensor is not reporting](https://icemachinerepair.center/error-codes/atosa-e1/)** **[Book a visit with IceMachineRepair.center](https://icemachinerepair.center/schedule/)**