--- title: "Hoshizaki E01: the cabinet temperature sensor has failed" description: "What E01 means on Hoshizaki E01: the cabinet temperature sensor has faileds, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/hoshizaki-e01/" --- # Hoshizaki E01: the cabinet temperature sensor has failed The cabinet thermistor is how the control knows how cold the box is. ## What E01 actually means. The cabinet thermistor is how the control knows how cold the box is. When it fails, Steelheart and Commercial Series uprights show E01, beep once a minute and run the compressor five minutes on and five minutes off instead of stopping. Product stays cool for a while, but nothing is watching the actual temperature any more. Hoshizaki commercial appliance display What to do when E01 shows on the commercial appliance ### Kind of code Sensors and probes A probe is handing the controller a reading it cannot trust, or none at all: a box or coil sensor torn loose from its clip, a fryer probe coated in carbon from oil left too long between filterings, a combi core probe with a kinked cable, or a connector gone green from steam and cleaning chemicals. The unit then runs on, stops, or shuts the heat or the cooling off to protect itself. Letting it cool and restarting it as the manual describes is fair; a probe that still reads wrong sits behind a panel, and that is a visit. ### Usually leads to Commercial controls and board repair Controllers, touch panels, relays, contactors and interlocks tested, and replaced only when the evidence says so. ### Shows up as Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display A commercial appliance error code appears as letters or numbers on a combi, fryer, reach-in controller, dish machine or laundry machine display, or as a flashing light or an alarm tone. ### Make Hoshizaki On a Hoshizaki cold cabinet in a restaurant, the tech first finds out when the last good temperature was written on the log. ### Source Hoshizaki Steelheart Series upright A-Series service manual 73237 (archived copy of the Hoshizaki America PDF) Steelheart upright A-Series and Commercial Series upright S-Series, which fall back to timed cycling. Steelheart prep tables and equipment stands list E01 too, without the timed fallback line. ## Before you book, in this order. Each step comes from Hoshizaki's own guidance for E01 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Silence the beep with the upper button and put a thermometer inside the cabinet. 02 Log the thermometer reading every hour while E01 stays on the display. 03 Move sensitive food to another cold unit if the thermometer reads above 41°F. 04 Book a visit to have the cabinet thermistor replaced. ### Still there? It usually turns into [commercial controls and board repair](https://commercialappliancerepair.center/services/commercial-controls-and-board-repair/). Book with the code and the model number. ### What not to do E01 is not a warm-cabinet alarm, and the cabinet is often still cold when it first appears. It is also a different code from E1 on older HPR prep tables, where E1 reports a high cabinet temperature. ## What you may notice with it. The commercial appliance problems E01 tends to arrive with. Answer these at the commercial appliance before anyone is booked. [All problems](https://commercialappliancerepair.center/problems/) Before you call ### [Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display](https://commercialappliancerepair.center/problems/commercial-error-code/) [All 8 causes, cheapest first](https://commercialappliancerepair.center/problems/commercial-error-code/) It also comes with - [**Reach-In Cooler Not Holding Temperature Through a Shift**](https://commercialappliancerepair.center/problems/reach-in-not-holding-temperature/) - [**Prep Table Running Warm in the Top Rail and the Base**](https://commercialappliancerepair.center/problems/prep-table-running-warm/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where E01 usually leads ## Commercial controls and board repair. **Controller, touch panel, probe or sensor, relay, contactor, power supply, door switch or interlock, tested before anything is changed · moderate.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/commercial-controls-and-board-repair/) ## Hoshizaki commercial appliances. On a Hoshizaki cold cabinet in a restaurant, the tech first finds out when the last good temperature was written on the log. [Hoshizaki commercial appliance repair](https://commercialappliancerepair.center/brands/hoshizaki/) More Hoshizaki codes [dor](https://commercialappliancerepair.center/error-codes/hoshizaki-dor/) [E02](https://commercialappliancerepair.center/error-codes/hoshizaki-e02/) [Hi](https://commercialappliancerepair.center/error-codes/hoshizaki-hi/) [Lo](https://commercialappliancerepair.center/error-codes/hoshizaki-lo/) [UHi](https://commercialappliancerepair.center/error-codes/hoshizaki-uhi/) [ULo](https://commercialappliancerepair.center/error-codes/hoshizaki-ulo/) [E1](https://commercialappliancerepair.center/error-codes/hoshizaki-e1/) [E3](https://commercialappliancerepair.center/error-codes/hoshizaki-e3/) [E7](https://commercialappliancerepair.center/error-codes/hoshizaki-e7/) Sensors and probes on other makes [Alto-Shaam E20](https://commercialappliancerepair.center/error-codes/alto-shaam-e20/) [Beverage-Air E01](https://commercialappliancerepair.center/error-codes/beverage-air-e01/) [Blodgett Cavity Probe Error](https://commercialappliancerepair.center/error-codes/blodgett-cavity-probe-error/) [Continental Refrigerator E0](https://commercialappliancerepair.center/error-codes/continental-refrigerator-e0/) [Delfield E01](https://commercialappliancerepair.center/error-codes/delfield-e01/) [Dexter TEMP SENSOR SHORT](https://commercialappliancerepair.center/error-codes/dexter-temp-sensor-short/) [Frymaster E13](https://commercialappliancerepair.center/error-codes/frymaster-e13/) [Garland E21](https://commercialappliancerepair.center/error-codes/garland-e21/) [All 61 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-sensor) Hoshizaki builds this ### Commercial cold storage Reach-in and pass-through cabinets, walk-in coolers and walk-in freezers, prep and sandwich tables, undercounter units and blast chillers that hold a kitchen's food at safe temperatures. ## In Hoshizaki's own words > Cabinet thermistor has failed. [Hoshizaki Steelheart Series upright A-Series service manual 73237 (archived copy of the Hoshizaki America PDF)](http://web.archive.org/web/20260311050402/https://secure.hoshizakiamerica.com/docs/manuals/Steelheart_UR_serv.pdf) [Hoshizaki Steelheart Series upright A-Series service manual 73237 (archived copy of the Hoshizaki America PDF)](http://web.archive.org/web/20260311050402/https://secure.hoshizakiamerica.com/docs/manuals/Steelheart_UR_serv.pdf) [Hoshizaki Commercial Series upright S-Series service manual 73207 (archived copy of the Hoshizaki America PDF)](https://web.archive.org/web/2026/https://secure.hoshizakiamerica.com/docs/manuals/Commercial_S_Series_serv.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Steelheart upright A-Series and Commercial Series upright S-Series, which fall back to timed cycling. Steelheart prep tables and equipment stands list E01 too, without the timed fallback line. ## Hoshizaki E01 commercial appliance 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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Silence the beep with the upper button and put a thermometer inside the cabinet. If it comes back, it needs a visit. ### Can I keep using a Hoshizaki cabinet that shows E01? For a short time, with a thermometer inside and a written log. Timed cycling keeps most cabinets cold, but it cannot react to a full delivery or a busy door, so book the repair rather than living with it. ### Does unplugging a Hoshizaki cabinet clear E01? Hoshizaki gives no reset for E01 other than replacing the sensor, so a power cycle is not a repair. Leave the cabinet running on its fallback and book a visit. ### Is E01 the same as E02 on a Hoshizaki? No. E01 is the cabinet sensor that decides when to cool; E02 is the defrost sensor on the coil. E01 is the one that changes how the whole cabinet runs. --- **[Read on the site: Hoshizaki E01: the cabinet temperature sensor has failed](https://commercialappliancerepair.center/error-codes/hoshizaki-e01/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**