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DeLonghi Magnifica S ECAM 22.110.SB - flashing descaling diode

elciaaaak 40797 11
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  • #1 18071597
    elciaaaak
    Level 8  
    Posts: 6
    Rate: 3
    I have a problem with my DeLonghi Magnifica S coffee machine.
    Namely, the indicator light flashes, which informs about the need to descale the device.
    Despite cleaning several times according to the instructions, the control does not disappear.
    Anyone have an idea what it's about?
    DeLonghi Magnifica S ECAM 22.110.SB - flashing descaling diode
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  • #2 18073262
    sigwa18
    Level 43  
    Posts: 11671
    Help: 1166
    Rate: 3260
    The lack of water sensor in the tank often fails (not the limit switch of the removed tank). Without it, it will do the last stage of descaling (no signal about the consumption of the entire solution tank).
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  • #3 18073930
    jack63
    Level 43  
    Posts: 11693
    Help: 847
    Rate: 2766
    sigwa18 wrote:
    The lack of water sensor in the tank often fails (not the limit switch of the removed tank)

    I have the same express. OK for now, but in the meantime I'll ask:
    Where to look for this sensor?
    Something more about him? Please.
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  • #4 18074948
    sigwa18
    Level 43  
    Posts: 11671
    Help: 1166
    Rate: 3260
    The sensor is in the espresso machine itself, under the container there is a reed switch or a two-wire hall sensor, and in the container specifically its float is a magnet as it falls, it approaches the sensor and causes it to work. Damage to this sensor means that the machine does not see the lack of water in the tank and thus will make coffee despite the lack of water and will not complete the descaling process because for its completion it is required that the liquid solution goes down to zero, i.e. detecting the lack of liquid otherwise over and over again pours the liquid and does not end the descaling program. I tried to replace the sensor itself, only the set of the tank plus the sensor gives results, possibly replacing the magnet in the float or adding a small neodymium one from the bottom. The tank plus the sensor is about PLN 150.
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  • #5 18111647
    Misiek85
    Level 23  
    Posts: 1086
    Help: 26
    Rate: 536
    Or maybe not enough water added to the tank. New espresso machine or several years old? Is the descaling process 1st stage pouring in portions complete? Shows no water?
  • #6 18560363
    raduch85
    Level 10  
    Posts: 10
    Rate: 14
    I'm joining this thread because I have the same problem. Express for several years. The sensor under the tank does not react during descaling, even when removed, it is attached to the magnet. During normal operation, it does not detect the magnet in the tank, but when applied directly, it sees. Is it a sensor replacement??
  • #7 20048466
    sigwa18
    Level 43  
    Posts: 11671
    Help: 1166
    Rate: 3260
    Well, I'm not sure. Neodymium magnets also lose strength with age.
  • #8 20048489
    raduch85
    Level 10  
    Posts: 10
    Rate: 14
    For me, the problem was solved by replacing the tank with the magnet (non-detachable element). It turned out that the magnet lost its power.
  • #9 20049353
    ssss
    Level 38  
    Posts: 3346
    Help: 464
    Rate: 1764
    Reservoir or item 47 to be replaced
    Attachments:
    • 1832324.pdf (3 MB) You must be logged in to download this attachment.
  • #10 20885243
    not_engineer
    Level 4  
    Posts: 62
    Rate: 15

    Hello, I have the same problem. DeLonghi 22.110.W. I don't want to finish descaling. I checked with a meter and the sensor reacts to the water tank, just like to another tank or a magnet. I replaced the tank and still the same. Where else can you look for the cause?
  • #11 20889928
    ssss
    Level 38  
    Posts: 3346
    Help: 464
    Rate: 1764
    So you only need to replace the sensor once you have replaced the water tank
  • #12 20925805
    not_engineer
    Level 4  
    Posts: 62
    Rate: 15

    In fact, I replaced the water sensor and it works, although the other one was supposedly functional. You can see that it no longer gave such an accurate signal. It helped, thanks.
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Topic summary

✨ The DeLonghi Magnifica S ECAM 22.110.SB coffee machine is experiencing a persistent flashing descaling indicator despite multiple cleaning attempts. Users suggest that the issue may stem from a malfunctioning water sensor located under the tank, which fails to detect the water level, preventing the completion of the descaling process. Solutions discussed include replacing the water tank and sensor, as well as checking for sufficient water levels during descaling. Some users have resolved the issue by replacing the tank or the sensor, indicating that the magnet in the float may lose strength over time, affecting sensor functionality.
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FAQ

TL;DR: For Magnifica S ECAM 22.110 descaling that won't reset, check the tank magnet and under‑tank sensor; PLN 150 typical tank+sensor cost; "Damage to this sensor means that the machine does not see the lack of water." [Elektroda, sigwa18, post #18074948]

Why it matters: It guides DeLonghi Magnifica S ECAM 22.110 owners who ask “how do I fix the flashing descaling light?” to a safe, proven fix.

Quick Facts

How do I fix the flashing descaling light on a DeLonghi Magnifica S ECAM 22.110?

Most cases trace to the tank magnet or the under‑tank water sensor. Do a quick triage:
  1. Remove the tank and confirm the float magnet drops when empty.
  2. Hold a small neodymium magnet under the tank area; see if the machine detects “no water.”
  3. If detection works externally, replace the reservoir (weak magnet). If not, replace the sensor. This stops the descaling loop because the machine can finally detect “empty” and exit the cycle. [Elektroda, sigwa18, post #18074948]

Where is the water‑level sensor located, and what type is it?

It sits inside the machine, directly under the water tank. DeLonghi uses a reed switch or a two‑wire Hall sensor there. The sensor detects a magnet embedded in the tank’s float when the float drops. That change signals the control board that the tank has run empty. [Elektroda, sigwa18, post #18074948]

Why won’t the descaling cycle finish even after I follow the manual?

The cycle ends only after the control board detects the tank has gone to zero. A failed sensor or a weak tank magnet prevents that “empty” signal. The machine then keeps circulating solution and never exits descaling. Fix the sensing path and the indicator clears immediately after the final stage. [Elektroda, sigwa18, post #18074948]

How can I test the tank magnet and sensor without disassembly?

Remove the tank and apply a separate magnet to the sensor spot under the tank. If the machine reacts, but it ignores the tank’s own magnet, your reservoir magnet is weak. A meter test can also show the sensor switching when a magnet is applied directly. Replace the tank if its magnet is underpowered. [Elektroda, raduch85, post #18560363]

Can the reservoir’s magnet weaken over time?

Yes. “Neodymium magnets also lose strength with age.” If the sensor triggers with a separate magnet but not with your tank, the tank magnet has likely weakened. Replacing the reservoir is the durable fix. [Elektroda, sigwa18, post #20048466]

Is the tank magnet replaceable, or do I need a whole new reservoir?

Users report the magnet is a non‑detachable element of the reservoir. Replacing the entire tank restored proper sensing and let descaling finish. If your sensor responds to an external magnet, a new reservoir is the right part. [Elektroda, raduch85, post #20048489]

I replaced the tank and it still won’t finish descaling—what next?

Replace the water sensor under the tank. One owner’s meter showed a “working” sensor, but it didn’t give a precise enough signal. After installing a new sensor, the descaling program completed and the light cleared. [Elektroda, not_engineer, post #20925805]

What’s the difference between the water‑level sensor and the tank‑present switch?

The tank‑present switch only confirms the tank is inserted. The water‑level sensor detects when the tank is empty via the float magnet. Forum experts stress the frequent failure is the level sensor, not the tank‑present limit switch. [Elektroda, sigwa18, post #18073262]

Can a failed sensor really let the machine brew with no water?

Yes. If the level sensor is faulty, the machine won’t detect an empty tank. It may continue attempting to brew or circulate fluid, risking pump stress. Fix the sensor path to restore safe operation. [Elektroda, sigwa18, post #18074948]

What does “item 47” refer to in some parts diagrams?

It refers to the reservoir assembly. If your diagnosis points to a weak magnet or physical tank issue, replace the reservoir (item 47). That resolved several cases. [Elektroda, ssss, post #20049353]

Could low water during descaling cause the blinking light to continue?

Ensure you added enough water or solution at the start. The first phase should dispense in portions, then the machine expects the tank to run empty. If the machine doesn’t show “no water,” revisit sensing and refill properly. [Elektroda, Misiek85, post #18111647]

How much does the fix cost, and is DIY realistic?

Typical cost for a tank plus sensor is about PLN 150. Many owners swap the reservoir or the sensor with basic tools. Some even add a small neodymium magnet to the float as a quick check. Replace worn parts for a reliable, lasting result. [Elektroda, sigwa18, post #18074948]

Do these tips apply to ECAM 22.110.W as well as .SB?

Yes. A user with an ECAM 22.110.W replaced the water sensor and the machine completed descaling. The sensing architecture is the same around the tank and sensor. [Elektroda, not_engineer, post #20925805]

Is there a temporary workaround to finish descaling before parts arrive?

You can strengthen the float’s magnetic field by adding a small neodymium magnet to the float’s bottom. This may let the machine detect “empty” and complete descaling. Treat it as a diagnostic or short‑term workaround until you replace the weak part. [Elektroda, sigwa18, post #18074948]
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