--- title: "Rational Service 28.2: the cooking cabinet went past its temperature limit" description: "What Service 28.2 means on Rational Service 28.2: the cooking cabinet went past its temperature limits, what to check before booking, and when it is not a…" url: "https://commercialappliancerepair.center/error-codes/rational-service-28-2/" --- # Rational Service 28.2: the cooking cabinet went past its temperature limit The iCombi Pro watches the cooking cabinet against a safety limit. ## What Service 28.2 actually means. The iCombi Pro watches the cooking cabinet against a safety limit. Service 28.2 reports that the limit was passed, which points at the heating or its control rather than the recipe. Rational lists cooking as not possible. Rational commercial appliance display · also shown as 28.2 What to do when Service 28.2 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 Rational A Rational visit is timed after the evening cleaning cycle, when the cabinet is cool and the display can be read without a load inside. ### Source RATIONAL iCombi Pro floor units 20-1/1 and 20-2/1, original instructions for use (US English) Listed in the error message tables of the iCombi Pro floor unit instructions for use (models 20-1/1 and 20-2/1, US English edition). ## Before you book, in this order. Each step comes from Rational's own guidance for Service 28.2 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Keep the cabinet shut while it cools by itself, and never spray water into it while hot. 02 Take the food out once it is safe to open and finish it elsewhere. 03 Book a visit and mention what the oven was doing when the message came up, such as grilling or a long hot air stage. ### 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 Service 28.2 is not the steam generator limit, which Rational numbers 28.1, and not 28.4, which still leaves hot air mode available. It is also different from Service 29, where the electronics board rather than the cabinet runs hot. ## What you may notice with it. The commercial appliance problems Service 28.2 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 - [**Restaurant Equipment Burning Smell: Scorched Oil, Hot Wiring or Lint**](https://commercialappliancerepair.center/problems/commercial-burning-smell/) - [**Commercial Convection Oven Baking Unevenly Across the Racks**](https://commercialappliancerepair.center/problems/commercial-oven-uneven-bake/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where Service 28.2 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/) ## Rational commercial appliances. A Rational visit is timed after the evening cleaning cycle, when the cabinet is cool and the display can be read without a load inside. [Rational commercial appliance repair](https://commercialappliancerepair.center/brands/rational/) More Rational codes [Service 10](https://commercialappliancerepair.center/error-codes/rational-service-10/) [Service 11](https://commercialappliancerepair.center/error-codes/rational-service-11/) [Service 20.1](https://commercialappliancerepair.center/error-codes/rational-service-20-1/) [Service 25](https://commercialappliancerepair.center/error-codes/rational-service-25/) [Service 29](https://commercialappliancerepair.center/error-codes/rational-service-29/) [Service 31.1](https://commercialappliancerepair.center/error-codes/rational-service-31-1/) [Service 32.1](https://commercialappliancerepair.center/error-codes/rational-service-32-1/) [Service 40](https://commercialappliancerepair.center/error-codes/rational-service-40/) [Service 41](https://commercialappliancerepair.center/error-codes/rational-service-41/) [Service 42.1](https://commercialappliancerepair.center/error-codes/rational-service-42-1/) [Service 47.1](https://commercialappliancerepair.center/error-codes/rational-service-47-1/) [Service 50](https://commercialappliancerepair.center/error-codes/rational-service-50/) [All 15 Rational codes](https://commercialappliancerepair.center/error-codes/#codes-rational) 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 72 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-temperature) Rational 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 Rational's own words > The temperature limit of the cooking cabinet has been exceeded. [RATIONAL iCombi Pro floor units 20-1/1 and 20-2/1, original instructions for use (US English)](https://hcms.rational-online.com/hcms/v1.7/entity/documents/155435/storage/MTU1NDM1LzAvbWFzdGVyLy8vMTAxNTcwMzIw/download/manual_original_instruction_icombi_pro_20-1_1,_20-2_1_english_usa.pdf) [RATIONAL iCombi Pro floor units 20-1/1 and 20-2/1, original instructions for use (US English)](https://hcms.rational-online.com/hcms/v1.7/entity/documents/155435/storage/MTU1NDM1LzAvbWFzdGVyLy8vMTAxNTcwMzIw/download/manual_original_instruction_icombi_pro_20-1_1,_20-2_1_english_usa.pdf) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Listed in the error message tables of the iCombi Pro floor unit instructions for use (models 20-1/1 and 20-2/1, US English edition). ## Rational Service 28.2 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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Keep the cabinet shut while it cools by itself, and never spray water into it while hot. If it comes back, it needs a visit. ### Is it dangerous when a Rational shows Service 28.2? The oven has already protected itself by stopping, which is the purpose of the limit. Should smoke or a burning odor appear, switch the unit off and leave the cabinet closed as it cools. ### Can I reset Service 28.2 on my Rational and keep cooking? The manual lists no owner reset and marks cooking as not possible. The heating control has to be checked before the oven goes back into service. ### What is the difference between Service 28.1 and 28.2 on a Rational? 28.1 is the limit on the steam generator and 28.2 is the limit on the cooking cabinet. Both stop cooking, and both need a technician. --- **[Read on the site: Rational Service 28.2: the cooking cabinet went past its temperature limit](https://commercialappliancerepair.center/error-codes/rational-service-28-2/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**