--- title: "Rational Service 11: water is not getting into the steam generator properly" description: "What Service 11 means on Rational Service 11: water is not getting into the steam generator properlys, what to check before booking, and when it is not a…" url: "https://commercialappliancerepair.center/error-codes/rational-service-11/" --- # Rational Service 11: water is not getting into the steam generator properly Before the iCombi Pro can make steam, it has to fill its steam generator from the building water line. ## What Service 11 actually means. Before the iCombi Pro can make steam, it has to fill its steam generator from the building water line. Service 11 reports that this intake is not doing its job. Rational lists cooking as still possible. Rational commercial appliance display · also shown as 11 What to do when Service 11 shows on the commercial appliance ### Kind of code Water, fill and drain Water is not arriving, not reaching its level, not heating or not leaving on time. A dish machine may be short of fill because a supply valve is half closed or its line strainer is clogged, it may drain slowly through a scrap basket full of debris, or its booster may be too scaled to heat the rinse; a combi's steam generator may be scaled or its water treatment exhausted; a washer-extractor may time out on a slow drain. Opening the supply valve, cleaning strainers with the unit off and checking the drain line are fair; a pump, a fill valve, a heater or a leak near wiring is a visit. ### Usually leads to Dish machine repair Undercounter, door-type and conveyor dish machines: tank heaters, boosters, wash pumps, fill and drain valves. ### 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 11 on its commercial appliances. Follow it to the end: the last card says whether this is a visit. 01 Check that the water shut-off valve feeding the oven is fully open and that no one has closed it for other plumbing work. 02 Look for a kinked or crushed inlet hose behind the unit without pulling the oven away from the wall. 03 If the valve is open and Service 11 stays, book a visit so the inlet and fill valve can be checked. ### Still there? It usually turns into [dish machine repair](https://commercialappliancerepair.center/services/dish-machine-repair/). Book with the code and the model number. ### What not to do Service 11 is about the steam generator's own intake, not about the hand shower or the cleaning water. A problem with measuring how much water went in is reported separately as Service 12. ## What you may notice with it. The commercial appliance problems Service 11 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 - [**Combi Oven Steam Problem: Weak Steam, Scale or a Dry Cavity**](https://commercialappliancerepair.center/problems/combi-oven-steam-problem/) Problem ### Commercial Appliance Error Code on a Combi, Fryer, Dish Machine or Laundry Display 8 causes, cheapest first Where Service 11 usually leads ## Dish machine repair. **Dish machine tank heater or booster element, thermostat, fill valve, float switch, drain valve, wash pump seal or motor, conveyor drive · moderate.** Book a visit [What the job involves](https://commercialappliancerepair.center/services/dish-machine-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 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/) [Service 50](https://commercialappliancerepair.center/error-codes/rational-service-50/) [All 15 Rational codes](https://commercialappliancerepair.center/error-codes/#codes-rational) Water, fill and drain on other makes [Alto-Shaam E01](https://commercialappliancerepair.center/error-codes/alto-shaam-e01/) [Blodgett Water Level Error](https://commercialappliancerepair.center/error-codes/blodgett-water-level-error/) [Cleveland LOW WATER light](https://commercialappliancerepair.center/error-codes/cleveland-low-water-light/) [Dexter F2](https://commercialappliancerepair.center/error-codes/dexter-f2/) [Frymaster E33](https://commercialappliancerepair.center/error-codes/frymaster-e33/) [Hatco LO H2O](https://commercialappliancerepair.center/error-codes/hatco-lo-h2o/) [Hobart 019](https://commercialappliancerepair.center/error-codes/hobart-019/) [Miele Professional F18](https://commercialappliancerepair.center/error-codes/miele-professional-f18/) [All 43 codes of this kind](https://commercialappliancerepair.center/error-codes/#family-water) 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 water intake for the steam generator is malfunctioning. [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 11 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 that the water shut-off valve feeding the oven is fully open and that no one has closed it for other plumbing work. If it comes back, it needs a visit. ### Why does my Rational iCombi Pro show Service 11 after plumbing work? A closed or half-open shut-off valve is the easiest cause to rule out. Once the supply is back to normal, restart the oven; if the message returns, the intake itself needs a technician. ### Is the steam on a Rational oven affected by Service 11? It can be, because the steam generator depends on that fill. Rational still lists cooking as possible, so dry heat work carries on while you watch the moist modes. ### Does a water filter cause Service 11 on a Rational combi? A clogged filter cartridge on the supply can starve the intake, so ask whoever changes your filters when it was last replaced. The manual itself only names the intake, so a technician should confirm the cause. --- **[Read on the site: Rational Service 11: water is not getting into the steam generator properly](https://commercialappliancerepair.center/error-codes/rational-service-11/)** **[Book a visit with CommercialApplianceRepair.center](https://commercialappliancerepair.center/schedule/)**