--- title: "Hoshizaki dor: a Steelheart door has been open too long" description: "What dor means on Hoshizaki dor: a Steelheart door has been open too longs, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/hoshizaki-dor/" --- # Hoshizaki dor: a Steelheart door has been open too long On Steelheart upright reach-ins the control flashes dor with the alarm icon once a door has been open past two minutes. ## What dor actually means. On Steelheart upright reach-ins the control flashes dor with the alarm icon once a door has been open past two minutes. A failed door switch gives the same three letters, so dor can appear on a door that is plainly shut. The control beeps for ten seconds out of every minute until someone silences it. Hoshizaki commercial appliance display What to do when dor shows on the commercial appliance ### Kind of code Temperature and alarms The controller has seen a temperature outside the band it was set for and is saying so: a box above its alarm point, a fryer vat or an oven cavity that tripped its high-limit, or a dish machine rinse that never came up to heat. Often the cause sits outside the unit, such as a door left open during a delivery, a coil packed with grease, a kitchen far hotter than the maker allows or a booster fed cold water. Checking the door, the coil and the air around the unit is fair; move the product if a cold box stays above 41°F, and book the visit. ### Usually leads to Reach-in and prep table repair Reach-ins, pass-throughs, prep tables and blast chillers: gaskets, hinges, fans, thermostats, condensers and compressors. ### 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 reach-ins (service manual 73237). Not listed for the Commercial S-Series or for Steelheart prep tables and equipment stands. ## Before you book, in this order. Each step comes from Hoshizaki's own guidance for dor on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Close every door on the cabinet firmly and watch whether dor clears. 02 Look for a pan handle, a sheet tray or a shelf edge holding a door off its gasket. 03 Press and release the upper button to silence the beep while you check. 04 When dor comes back with every door latched, the switch is suspect, and that is a visit. ### Still there? It usually turns into [reach-in and prep table repair](https://commercialappliancerepair.center/services/reach-in-and-prep-table-repair/). Book with the code and the model number. ### What not to do dor reports a door, not a temperature, though a door propped open through a rush can turn into Hi two hours later. The Commercial S-Series uprights and the Steelheart prep tables have no dor line in their alarm tables, so a beep on those cabinets points to another code. ## What you may notice with it. The commercial appliance problems dor 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/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where dor usually leads ## Reach-in and prep table repair. **Reach-in, pass-through or prep table gasket, hinge, fan motor, thermostat or controller, defrost heater, leak repair or compressor · moderate.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/reach-in-and-prep-table-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 [E01](https://commercialappliancerepair.center/error-codes/hoshizaki-e01/) [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/) Temperature and alarms on other makes [Alto-Shaam E13](https://commercialappliancerepair.center/error-codes/alto-shaam-e13/) [Beverage-Air Hi](https://commercialappliancerepair.center/error-codes/beverage-air-hi/) [Blodgett Cavity High Temp Error](https://commercialappliancerepair.center/error-codes/blodgett-cavity-high-temp-error/) [Cleveland RESET light](https://commercialappliancerepair.center/error-codes/cleveland-reset-light/) [Continental Refrigerator HI](https://commercialappliancerepair.center/error-codes/continental-refrigerator-hi/) [Delfield Hi](https://commercialappliancerepair.center/error-codes/delfield-hi/) [Frymaster E16](https://commercialappliancerepair.center/error-codes/frymaster-e16/) [Garland E04](https://commercialappliancerepair.center/error-codes/garland-e04/) [All 69 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-temperature) 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 > Door Switch Alarm: Door has remained open for more than 2 minutes. [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) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Steelheart upright A-Series reach-ins (service manual 73237). Not listed for the Commercial S-Series or for Steelheart prep tables and equipment stands. ## Hoshizaki dor 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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Close every door on the cabinet firmly and watch whether dor clears. If it comes back, it needs a visit. ### Why does my Hoshizaki reach-in show dor with the door closed? The door switch still reads that door as open. A door that has dropped out of line with its switch, or a switch that has failed, produces the same dor as an open door, and only a test of the switch tells the two apart. ### How do I stop the dor beep on a Steelheart? Press and release the upper button to silence it. Closing the door properly is what clears the code, so find what is holding it open before you walk away. ### Can dor on a Hoshizaki cabinet spoil food? Not by itself; it warns that cold air is escaping. Check the cabinet temperature on the display, and if product climbs above 41°F, move it to a working unit and log the reading. --- **[Read on the site: Hoshizaki dor: a Steelheart door has been open too long](https://commercialappliancerepair.center/error-codes/hoshizaki-dor/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**