<p>The solution was to replace the flowmeter (picture is of a different machine but the position of the sensor is the same):
<a href="https://i.sstatic.net/j47Rv.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/j47Rv.jpg" alt="enter image description here" /></a></p>
<p>Here is the part in detail:
<a href="https://i.sstatic.net/PnWSX.png" rel="nofollow noreferrer"><img src="https://i.sstatic.net/PnWSX.png" alt="enter image description here" /></a></p>
<p>In my case there was corrosion on the connector that was causing the sensor to malfunction, the chrome-plating on the lower part of the connector (the one that goes into the sensor) was eaten by the corrosion, this is how it looks after cleaning with WD40:
<a href="https://i.sstatic.net/11fxa.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/11fxa.jpg" alt="enter image description here" /></a></p>
<p>I ended up replacing the whole sensor with a spare that i got from a friend that's into buying used/broken machines and refurbishing them for sale. Otherwise you can get them from ebay by searching for &quot;delonghi esam flow-meter&quot; and making sure what you buy looks exactly like the picture above.</p>

CC BY-SA 4.0
2021-06-11T21:51:15.573Z
2021-06-11T21:51:15.573Z
Elfarto
<p>To add to this solution. I had the same issue with it rinsing for far to long and coffee exprressos over filling cups. It was after I fixed up the corrosion on the terminal. The issue was that I put the water connecters on incorrectly so it was not picking up the full flow as the things was probably spinning backwards. Works like a charm now, these machines are so easy to work with.</p>

CC BY-SA 4.0
2022-03-17T06:53:56.720Z
2022-03-17T06:53:56.720Z
test me
<p>My machine is a DeLonghi Magnifica ESAM3500 , though this may apply to other models as well.
It all started after I ran a descaling cycle on an otherwise faultless machine.</p>
<p>Symptoms:</p>
<ul>
<li>Coffee would drip during the pre-infusion phase of brewing, then stop and continue brewing,</li>
<li>Too much coffee is brewed to the point of overflowing your cups</li>
<li>Rinsing cycle at power on/off takes too long and too much water is poured.</li>
</ul>
<p>Needless to say the coffee tastes like crap.</p>

<coffee-machines><troubleshooting>
DeLonghi Magnifica ESAM3500 brews for too long
Elfarto
# DeLonghi Magnifica ESAM3500 brews for too long

(Asked by: username_0 on 2021-06-11)

My machine is a DeLonghi Magnifica ESAM3500 , though this may apply to other models as well.
It all started after I ran a descaling cycle on an otherwise faultless machine.

Symptoms:

* Coffee would drip during the pre-infusion phase of brewing, then stop and continue brewing,
* Too much coffee is brewed to the point of overflowing your cups
* Rinsing cycle at power on/off takes too long and too much water is poured.

Needless to say the coffee tastes like crap.

**Tags:** coffee-machines, troubleshooting


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## 2 answers

### Answer by username_0 on 2021-06-11. Score: 1 | Accepted answer

The solution was to replace the flowmeter (picture is of a different machine but the position of the sensor is the same):
[![enter image description here](https://i.sstatic.net/j47Rv.jpg)](https://i.sstatic.net/j47Rv.jpg)

Here is the part in detail:
[![enter image description here](https://i.sstatic.net/PnWSX.png)](https://i.sstatic.net/PnWSX.png)

In my case there was corrosion on the connector that was causing the sensor to malfunction, the chrome-plating on the lower part of the connector (the one that goes into the sensor) was eaten by the corrosion, this is how it looks after cleaning with WD40:
[![enter image description here](https://i.sstatic.net/11fxa.jpg)](https://i.sstatic.net/11fxa.jpg)

I ended up replacing the whole sensor with a spare that i got from a friend that's into buying used/broken machines and refurbishing them for sale. Otherwise you can get them from ebay by searching for "delonghi esam flow-meter" and making sure what you buy looks exactly like the picture above.


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### Answer by username_1 on 2022-03-17. Score: 0

To add to this solution. I had the same issue with it rinsing for far to long and coffee exprressos over filling cups. It was after I fixed up the corrosion on the terminal. The issue was that I put the water connecters on incorrectly so it was not picking up the full flow as the things was probably spinning backwards. Works like a charm now, these machines are so easy to work with.


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