--- title: "Rational Service 50: the oven clock needs setting" description: "What Service 50 means on Rational Service 50: the oven clock needs settings, what to check before booking, and when it is not a failure at all." url: "https://commercialappliancerepair.center/error-codes/rational-service-50/" --- # Rational Service 50: the oven clock needs setting The iCombi Pro keeps a clock for logs, cleaning schedules and HACCP records. ## What Service 50 actually means. The iCombi Pro keeps a clock for logs, cleaning schedules and HACCP records. Service 50 reports that the clock on the CPU has not been set. Rational's instruction is simply to set the date and time. Rational commercial appliance display · also shown as 50 What to do when Service 50 shows on the commercial appliance ### Kind of code Controls and power The controller itself is reporting trouble, or the supply behind it is: a display with dead segments, a keypad that stopped responding after steam or degreaser got behind it, relays that stick, stored recipes or cycles that vanished overnight, a blown control fuse, or one leg of a three-phase feed missing so half the heat or the pump is gone. A full power cycle at the breaker, done as the manual describes, clears a passing glitch; a code that returns, a scorched smell or any sign of moisture behind the panel means the breaker stays off, 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 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 50 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Open the settings and set the date and time. 02 If the oven is connected to ConnectedCooking, turn on time synchronization so the clock is set automatically. 03 If Service 50 comes back after every power cut, book a visit, since Rational lists a defective battery as Service 51. ### 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 Service 50 is not a heating or water problem and does not stop cooking. When it keeps returning, the likely companion is Service 51, a defective battery. ## What you may notice with it. The commercial appliance problem Service 50 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/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where Service 50 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/) ## 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 28.2](https://commercialappliancerepair.center/error-codes/rational-service-28-2/) [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/) [All 15 Rational codes](https://commercialappliancerepair.center/error-codes/#codes-rational) Controls and power on other makes [Alto-Shaam E02](https://commercialappliancerepair.center/error-codes/alto-shaam-e02/) [Beverage-Air uLi](https://commercialappliancerepair.center/error-codes/beverage-air-uli/) [Blodgett Com Error](https://commercialappliancerepair.center/error-codes/blodgett-com-error/) [Delfield uLi](https://commercialappliancerepair.center/error-codes/delfield-uli/) [Dexter F1](https://commercialappliancerepair.center/error-codes/dexter-f1/) [Frymaster E19](https://commercialappliancerepair.center/error-codes/frymaster-e19/) [Garland E01](https://commercialappliancerepair.center/error-codes/garland-e01/) [Hatco Communication Error](https://commercialappliancerepair.center/error-codes/hatco-communication-error/) [All 64 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-board) 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 real time clock on the CPU is not initialised. Set the date and time. [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 50 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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Open the settings and set the date and time. If it comes back, it needs a visit. ### How do I clear Service 50 on a Rational? Set the date and time in the settings. The message is only about the clock. ### Why does Service 50 matter for a Rational in a busy kitchen? HACCP records and cleaning schedules use that clock. A wrong date can make your food safety log useless for an inspector. ### Why does my Rational lose its clock after each power cut? The CPU battery may be weak; Rational numbers that as Service 51. Book a visit so the battery can be replaced. --- **[Read on the site: Rational Service 50: the oven clock needs setting](https://commercialappliancerepair.center/error-codes/rational-service-50/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**