--- title: "Coffee Machine Descale Message Will Not Go Away: Causes and Fixes" description: "A coffee machine descale message that stays on the display after a full descaling cycle, comes back within days, or blocks drinks until the cycle is run keeps…" url: "https://coffeemachinerepair.center/problems/coffee-machine-descale-message-wont-clear/" --- # Coffee Machine Descale Message Will Not Go Away A coffee machine descale message that stays on the display after a full descaling cycle, comes back within days, or blocks drinks until the cycle is run keeps asking for care the owner believes was done. ## What it usually means. The machine does not see scale. It counts the water that has passed through it and, from the water hardness the owner set, estimates when scale will build up; then it asks for a descale. If a filter is registered, it counts the filter instead and asks less often. That counting explains most messages that will not clear. A cycle that was stopped halfway, whether the tank ran dry, the power went off or someone pulled the tray, does not count, and the message stays. Many models also insist on their own sequence: descaler in the tank, empty the tray at the step it asks, then rinse water, with the whole cycle run in one go. A hardness setting left at the factory level on soft water makes messages come too often; on very hard water with no filter, too rarely. A filter fitted without being registered in the menu, or left past its end, changes the count too. Only when a correct, uninterrupted cycle leaves the message in place is the board or a sensor worth a look. The 6 causes, cheapest first Answer these first 01 Was the last descaling cycle run to the end without a break, empty tank or power loss? 02 Which descaler was used, and in what amount? 03 What water hardness is set in the menu, and do you know your home's water hardness? 04 Is a water filter fitted, and is it registered in the menu and still within its life? 05 Does the message return after days, or never clear at all? ## Check these before you book. Coffee machine descale message: 5 checks, and none of them costs anything. 01 Run the descaling cycle again with the maker's descaler, from start to finish, without switching off or removing anything the machine does not ask for. 02 Test your water with a strip and set the matching hardness in the menu. 03 Register a new filter in the menu when you fit it, and replace it when the machine asks. ### Also worth checking - Keep the tank filled and the tray emptied only when the cycle tells you to. - Use only the descaler the maker names; vinegar can damage seals and leave a taste. ### How soon does it need a visit? A descale message is a reminder, not an alarm. Run the cycle soon, because scale builds on the heater; book a visit when a correct cycle does not clear it. ## The causes, cheapest first. 6 things coffee machine descale message will not go away turns out to be, from cycle interrupted to board or display holding the message. [The cost guide](https://coffeemachinerepair.center/cost/) 1. 01 no repair ### Cycle interrupted A descale that stopped midway, for an empty tank, a tray removed or a power cut, does not reset the counter. Running the whole cycle again in one go does. No repair: check it yourself 2. 02 no repair ### Hardness set wrong A factory hardness setting that does not match the home's water makes the reminders come too often or too late. A test strip and the menu setting fix it. No repair: check it yourself 3. 03 no repair ### Filter not registered or overdue A filter the machine does not know about, or one left past its months, changes the count. Registering or replacing it as the manual shows sets it right. No repair: check it yourself 4. 04 low to moderate ### Heavy scale from skipped descaling Hard water with a skipped filter and months of postponed descaling leave more scale than one cycle can remove. A professional descale clears the passages. [Fixed by coffee machine descaling service](https://coffeemachinerepair.center/services/coffee-machine-descaling-service/) 5. 05 moderate ### Flowmeter not counting If the flowmeter no longer reports water moving, the machine cannot complete a cycle and the message stays. It is tested on a visit. [Fixed by coffee machine pump repair](https://coffeemachinerepair.center/services/coffee-machine-pump-repair/) 6. 06 moderate to highest ### Board or display holding the message Rarely, the board keeps the reminder after a correct cycle. Its memory and its settings are checked last. [Fixed by coffee machine control board repair](https://coffeemachinerepair.center/services/coffee-machine-control-board-repair/) ## What else it could be. Most often confused with coffee from the coffee machine not hot enough, then no coffee coming out of the coffee machine. [All problems](https://coffeemachinerepair.center/problems/) Codes that come with it - [`Descaling needed. Press OK to start (~45min)` Bertazzoni · Mode, not a failure](https://coffeemachinerepair.center/error-codes/bertazzoni-descaling-needed/) - [`Replace water filter. Press OK to start` Bertazzoni · Mode, not a failure](https://coffeemachinerepair.center/error-codes/bertazzoni-replace-water-filter/) - [`General alarm: refer to user manual` Bertazzoni · Mode, not a failure](https://coffeemachinerepair.center/error-codes/bertazzoni-general-alarm/) - [`Fill Tank and Descale symbols flashing together` Bosch · Control board and power](https://coffeemachinerepair.center/error-codes/bosch-fill-tank-descale-flashing/) - [`Please run Calc'nClean program!` Bosch · Mode, not a failure](https://coffeemachinerepair.center/error-codes/bosch-please-run-calcnclean/) - [`Descaling overdue. Appliance is locked.` Bosch · Mode, not a failure](https://coffeemachinerepair.center/error-codes/bosch-descaling-overdue-appliance-locked/) [20 more codes, by make](https://coffeemachinerepair.center/error-codes/) Also related - [**What a Coffee Machine Error Code or Warning Symbol Means** 7 causes](https://coffeemachinerepair.center/problems/coffee-machine-error-code/) ### Coffee From the Coffee Machine Not Hot Enough 6 causes ### No Coffee Coming Out of the Coffee Machine 6 causes ### Coffee Machine Milk Not Frothing or Coming Out Flat 6 causes ## The makes it happens on. 12 makes on this site; coffee machine descale message will not go away can show up on any of them. Each mark opens that make's own page. [All 12 brands](https://coffeemachinerepair.center/brands/) ## Coffee Machine Descale Message Will Not Go Away, where we come out. 9 metros, each with its own page. 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Usually the water hardness in the menu is set higher than your water, or a filter is fitted but not registered. Check both. ### Can vinegar be used to descale a coffee machine? Makers advise against it. Vinegar can harm the seals, leave a taste and may not dissolve scale as well as their descaler. ### Does a water filter remove the need to descale? It stretches the time between descaling a lot, and some makers say none is needed while a filter is used. The manual for the model decides. ### Is it safe to keep making coffee while the descale message shows? For a short while, yes, on most machines. Leaving it for months lets scale build up on the heater. --- **[Read on the site: Coffee Machine Descale Message Will Not Go Away: Causes and Fixes](https://coffeemachinerepair.center/problems/coffee-machine-descale-message-wont-clear/)** **[Book a visit with CoffeeMachineRepair.center](https://coffeemachinerepair.center/schedule/)**