--- title: "Delfield Lo: a cooler has dropped below 25°F" description: "What Lo means on Delfield Lo: a cooler has dropped below 25°Fs, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/delfield-lo/" --- # Delfield Lo: a cooler has dropped below 25°F The low alarm guards coolers against freezing their contents. ## What Lo actually means. The low alarm guards coolers against freezing their contents. On Delfield's R290 reach-ins the low point is 25°F, and the display flashes Lo once the cabinet has sat below it for the alarm delay. Low-temperature cabinets have no low alarm at all. Delfield commercial appliance display · also shown as LO What to do when Lo 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 Delfield For a Delfield station that runs warm by late lunch, we time the visit to a slow hour so the pans can come out and the rail can be tested empty. ### Source Delfield 6000XL and 6100XL Series reach-ins, installation, operation and maintenance manual, part 9294254 (archived copy of the delfield.com PDF) Listed in the operation and indication table of Delfield's R290 reach-in manual (6000XL/6100XL) and prep table manual (4400/4500 Series). ## Before you book, in this order. Each step comes from Delfield's own guidance for Lo on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Check the set point; Delfield ships coolers set to hold about 38°F. 02 Look for frozen produce or dairy near the air outlet and move it. 03 If the set point is normal and Lo keeps returning, book 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 Lo cannot appear on a Delfield low-temperature cabinet, since those have no low point. On a cooler it points to the control or the set point more often than to the cooling system. ## What you may notice with it. The commercial appliance problems Lo 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 Lo 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/) ## Delfield commercial appliances. For a Delfield station that runs warm by late lunch, we time the visit to a slow hour so the pans can come out and the rail can be tested empty. [Delfield commercial appliance repair](https://commercialappliancerepair.center/brands/delfield/) More Delfield codes [Hi](https://commercialappliancerepair.center/error-codes/delfield-hi/) [dEF](https://commercialappliancerepair.center/error-codes/delfield-def/) [E01](https://commercialappliancerepair.center/error-codes/delfield-e01/) [E02](https://commercialappliancerepair.center/error-codes/delfield-e02/) [LEA](https://commercialappliancerepair.center/error-codes/delfield-lea/) [uLi](https://commercialappliancerepair.center/error-codes/delfield-uli/) [uHi](https://commercialappliancerepair.center/error-codes/delfield-uhi/) [off](https://commercialappliancerepair.center/error-codes/delfield-off/) 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/) [Frymaster E16](https://commercialappliancerepair.center/error-codes/frymaster-e16/) [Garland E04](https://commercialappliancerepair.center/error-codes/garland-e04/) [Hatco Control Board Overtemp](https://commercialappliancerepair.center/error-codes/hatco-control-board-overtemp/) [All 71 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-temperature) Delfield 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. Delfield builds this ### Commercial cooking equipment Fryers, griddles, charbroilers, restaurant ranges, convection and combi ovens, steamers, kettles, holding cabinets and toasters, on gas or electric, that make up the hot side of a kitchen line. ## In Delfield's own words > The low refrigerator temperature point is 25°F (-4°C). [Delfield 6000XL and 6100XL Series reach-ins, installation, operation and maintenance manual, part 9294254 (archived copy of the delfield.com PDF)](https://web.archive.org/web/20260309094403/https://www.delfield.com/wp-content/uploads/2025/10/6000_IOM-Book_del_en_9294254.pdf) [Delfield 6000XL and 6100XL Series reach-ins, installation, operation and maintenance manual, part 9294254 (archived copy of the delfield.com PDF)](https://web.archive.org/web/20260309094403/https://www.delfield.com/wp-content/uploads/2025/10/6000_IOM-Book_del_en_9294254.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed in the operation and indication table of Delfield's R290 reach-in manual (6000XL/6100XL) and prep table manual (4400/4500 Series). ## Delfield Lo 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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Check the set point; Delfield ships coolers set to hold about 38°F. If it comes back, it needs a visit. ### What temperature should a Delfield cooler hold? Delfield sets its coolers at mid-range to hold about 38°F. Adjust in small steps and check with a thermometer. ### Why is my Delfield showing Lo overnight? With the doors closed all night, a set point that is too low has nothing to warm the cabinet. Raise it slightly and watch. ### Can a bad probe cause Lo on a Delfield? Yes. If the air sensor reads colder than reality, the control keeps cooling. A technician compares it with a thermometer. --- **[Read on the site: Delfield Lo: a cooler has dropped below 25°F](https://commercialappliancerepair.center/error-codes/delfield-lo/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**