--- title: "Smeg TURN THE MILK FROTH KNOB TO START CLEANING: rinse the milk tubes" description: "What TURN THE MILK FROTH ADJUSTMENT KNOB TO START CLEANING means on Smeg TURN THE MILK FROTH KNOB TO START CLEANING: rinse the milk tubess, what to check before…" url: "https://coffeemachinerepair.center/error-codes/smeg-turn-milk-froth-knob-to-clean/" --- # Smeg TURN THE MILK FROTH KNOB TO START CLEANING: rinse the milk tubes The Smeg milk container has a froth dial with a CLEAN setting. ## What TURN THE MILK FROTH ADJUSTMENT KNOB TO START CLEANING actually means. The Smeg milk container has a froth dial with a CLEAN setting. Once a milk drink is done, the display asks you to put the dial on its CLEAN mark, and hot water and steam then clear the tubes. Smeg coffee machine display What to do when TURN THE MILK FROTH ADJUSTMENT KNOB TO START CLEANING shows on the coffee machine ### Kind of code Milk system The milk system could not draw, heat or foam the milk as it should: a tube pinched or not pushed fully onto its connector, a frother or valve clogged with dried milk, a skipped cleaning cycle, or a steam valve and seal that no longer hold. Taking the milk parts apart for a rinse where the manual allows, and running the milk cleaning cycle, clears most of it; steam hissing from the wrong place or a frother that stays cold is a visit. ### Usually leads to Coffee machine milk system repair Restoring the froth: the milk tube, the frother, the air inlet, the milk valve and the cleaning cycle that keeps them clear. ### Shows up as What a Coffee Machine Error Code or Warning Symbol Means A coffee machine error code may show as a short string of letters and numbers, a flashing symbol for water, grounds or the brew unit, a short sentence on a text display, or a machine that stops with one light blinking. ### Make Smeg A Smeg espresso machine is repaired at the owner's kitchen counter after a single test shot shows where the trouble begins. ### Source Smeg automatic built-in coffee machine instruction manual (linked from the US CMSU4303X, CMSU4104S and CMSU2104G pages) Smeg US built-in automatic coffee machines CMSU4303X (Classic, listed as retiring), CMSU4104S and CMSU2104G (Linea). All three link the same instruction manual, and the message appears on the full-touch display in capitals. ## Before you book, in this order. Each step comes from Smeg's own guidance for TURN THE MILK FROTH ADJUSTMENT KNOB TO START CLEANING on its coffee machines. Follow it to the end: the last card says whether this is a visit. 01 Keep the milk jug on its nozzle and set a glass beneath the milk outlet. 02 Turn the froth dial to CLEAN and let the flush run to the end. 03 Scrape the groove under the dial with a toothpick when you wash the lid; book a visit if milk still will not draw after cleaning. ### Still there? It usually turns into [coffee machine milk system repair](https://coffeemachinerepair.center/services/coffee-machine-milk-system-repair/). Book with the code and the model number. ### What not to do The prompt is routine and does not indicate a problem with the milk system. If the container was fitted with the dial already on CLEAN, the display asks you to turn it to a milk position instead. ## What you may notice with it. The coffee machine problems TURN THE MILK FROTH ADJUSTMENT KNOB TO START CLEANING tends to arrive with. Answer these at the coffee machine before anyone is booked. [All problems](https://coffeemachinerepair.center/problems/) Before you call ### [What a Coffee Machine Error Code or Warning Symbol Means](https://coffeemachinerepair.center/problems/coffee-machine-error-code/) [All 7 causes, cheapest first](https://coffeemachinerepair.center/problems/coffee-machine-error-code/) It also comes with - [**Coffee Machine Milk Not Frothing or Coming Out Flat**](https://coffeemachinerepair.center/problems/coffee-machine-milk-not-frothing/) Problem ### What a Coffee Machine Error Code or Warning Symbol Means 7 causes, cheapest first Where TURN THE MILK FROTH ADJUSTMENT KNOB TO START CLEANING usually leads ## Coffee machine milk system repair. **Milk tube, frother, O-rings, milk valve and steam path · low to moderate.** Book a visit [What the job involves](https://coffeemachinerepair.center/services/coffee-machine-milk-system-repair/) ## Smeg coffee machines. A Smeg espresso machine is repaired at the owner's kitchen counter after a single test shot shows where the trouble begins. [Smeg coffee machine repair](https://coffeemachinerepair.center/brands/smeg/) More Smeg codes [FILL WATER TANK WITH FRESH WATER](https://coffeemachinerepair.center/error-codes/smeg-fill-water-tank-with-fresh-water/) [EMPTY GROUND CONTAINER](https://coffeemachinerepair.center/error-codes/smeg-empty-ground-container/) [GROUND TOO FINE. ADJUST GRIND LEVEL 1 CLICK WHILE IN OPERATION](https://coffeemachinerepair.center/error-codes/smeg-ground-too-fine/) [INSERT BREWING UNIT](https://coffeemachinerepair.center/error-codes/smeg-insert-brewing-unit/) [WATER CIRCUIT EMPTY PRESS OK TO START FILLING PROCESS](https://coffeemachinerepair.center/error-codes/smeg-water-circuit-empty/) [DESCALING NEEDED PRESS OK TO START (~45MIN)](https://coffeemachinerepair.center/error-codes/smeg-descaling-needed/) [GENERAL ALARM: REFER TO USER MANUAL](https://coffeemachinerepair.center/error-codes/smeg-general-alarm/) [CLEANING PLEASE WAIT](https://coffeemachinerepair.center/error-codes/smeg-cleaning-please-wait/) [LED 30](https://coffeemachinerepair.center/error-codes/smeg-led-30/) [LED 31](https://coffeemachinerepair.center/error-codes/smeg-led-31/) [LED 29](https://coffeemachinerepair.center/error-codes/smeg-led-29/) [All buttons flash simultaneously](https://coffeemachinerepair.center/error-codes/smeg-all-buttons-flash/) [All 15 Smeg codes](https://coffeemachinerepair.center/error-codes/#codes-smeg) Milk system on other makes [Bertazzoni Turn milk froth adjustment knob to CLEAN to start cleaning](https://coffeemachinerepair.center/error-codes/bertazzoni-turn-milk-froth-knob-to-clean/) [Fisher & Paykel INSERT MILK CONTAINER](https://coffeemachinerepair.center/error-codes/fisher-and-paykel-insert-milk-container/) [Fulgor Milano PRESS CLEAN!](https://coffeemachinerepair.center/error-codes/fulgor-milano-press-clean/) [JennAir INSERT MILK CONTAINER!](https://coffeemachinerepair.center/error-codes/jennair-insert-milk-container/) [Jura Milk system cleaning](https://coffeemachinerepair.center/error-codes/jura-milk-system-cleaning/) [Miele F307](https://coffeemachinerepair.center/error-codes/miele-f307/) [Thermador MILK CONTAINER CONNECTED?](https://coffeemachinerepair.center/error-codes/thermador-milk-container-connected/) [Wolf INSERT MILK CONTAINER](https://coffeemachinerepair.center/error-codes/wolf-insert-milk-container/) [All 12 codes of this kind](https://coffeemachinerepair.center/error-codes/#family-milk) Smeg builds this ### Built-in coffee system The coffee machine set flush into a tall kitchen cabinet, filled from a water tank behind its front, grinding beans and brewing each cup on its own before sliding out on rails for service. Smeg builds this ### Countertop espresso machine The fully automatic bean-to-cup machine that stands on the counter, grinding, tamping, brewing and frothing at the touch of a key, with its tank, hopper and grounds drawer all reached from the top and the front. Smeg builds this ### Manual espresso machine The home espresso machine with a portafilter you fill and lock in by hand, a pump and a boiler or thermoblock inside, and a steam wand for milk you froth yourself. ## In Smeg's own words > Milk has been delivered recently and the tubes inside the milk container must be cleaned (D). [Smeg automatic built-in coffee machine instruction manual (linked from the US CMSU4303X, CMSU4104S and CMSU2104G pages)](https://doc.smeg.it/qr/914779197/EN) [Smeg automatic built-in coffee machine instruction manual (linked from the US CMSU4303X, CMSU4104S and CMSU2104G pages)](https://doc.smeg.it/qr/914779197/EN) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Smeg US built-in automatic coffee machines CMSU4303X (Classic, listed as retiring), CMSU4104S and CMSU2104G (Linea). All three link the same instruction manual, and the message appears on the full-touch display in capitals. ## Smeg TURN THE MILK FROTH ADJUSTMENT KNOB TO START CLEANING coffee machine 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 milk jug on its nozzle and set a glass beneath the milk outlet. If it comes back, it needs a visit. ### Why is the Smeg milk froth getting weaker? Dried milk in the lid, the dial or the connection nozzle is the usual cause. Run CLEAN after each milk drink and wash the lid parts by hand. ### Which parts of a Smeg built-in coffee machine are machine-washable? Only the milk container. Smeg says every other removable part, from the drip tray to the grounds bin, is washed by hand. ### Why does my Smeg ask me to turn the dial to a milk position? The container was fitted with the dial on CLEAN. Move the dial off CLEAN to one of the milk positions and the drink carries on. --- **[Read on the site: Smeg TURN THE MILK FROTH KNOB TO START CLEANING: rinse the milk tubes](https://coffeemachinerepair.center/error-codes/smeg-turn-milk-froth-knob-to-clean/)** **[Book a visit with CoffeeMachineRepair.center](https://coffeemachinerepair.center/schedule/)**