Krups EA8908 - message "Disconnect and reconnect or use application"

russell_terrier 99336 31

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Why does my Krups EA8908 immediately show 'Disconnect and reconnect or use the app' after startup, and how can I fix it?

The error is usually caused by a fault in the boiler temperature-sensing/heating circuit, most often a damaged NTC/thermistor on the boiler or its wiring, and sometimes blown thermal fuses near the sensor. [#19944958] [#20541427] [#21149539] Some users fixed it by repairing a broken sensor tip, soldering/replacing the sensor lead, or installing a new NTC sensor element. [#19944958] [#20664122] [#21309735] If the machine starts "Automatic maintenance" and then fails after water is pumped, check the flow meter, its harness, and the board module in that order; a clogged internal water filter on the flow meter can also cause the fault. [#19360935] [#20162646] [#20163255] In scaled-up machines, cleaning the water system with a ready-made coffee-machine descaler helped some owners, but other cases still needed service repair. [#19689608]

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#31 21560217 25 May 2025 22:09

pawel330k pawel330k

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Post #31
21560217 25 May 2025 22:09

In my case, such a message is a defective thermistor.
On Allegro they sell a Littelfuse 124JG1K for PLN60. It gives a coffee temperature on the maximum setting of 72 degrees, so I think it is ok. I don't know what it is on the original one.
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Flow meter contact plate was not making contact
#32 21720030 14 Oct 2025 14:37

tomtk tomtk

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Flow meter contact plate was not making contact
Post #32 21720030 14 Oct 2025 14:37

nioop wrote:
To be verified - flow meter, flow meter harness, plate module - in that order.
.

Thank you, in my case, after removing the middle white cable, this metal plate (cable end) that contacts the pin on the flow meter crumbled. Previously, I assume, it did not make contact with the pin. After properly pressing the metal plate against the pin and replacing the flow meter (although I don't think it was necessary), the coffee machine works properly.

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Topic summary

The discussion concerns a Krups EA8908 coffee machine that repeatedly shows the message “Disconnect and reconnect or use the app” / “Automatic maintenance,” often immediately after startup or during rinsing, even when no coffee cycle is selected. Users report relay clicking, forced maintenance cycles, and related messages such as tank/container alignment warnings. Suggested causes include a faulty boiler temperature sensor/NTC, broken or loose sensor wiring, blown thermal fuses on the boiler, a clogged internal water filter/flow path, or a defective flow meter/harness. Several fixes were reported: cleaning/descaling the water circuit, reseating or replacing the flow meter filter, repairing or soldering the NTC sensor connection, replacing the boiler or thermal fuses, and in some cases the machine recovered after repeated power cycling or removing/reinstalling the water tank.
AI summary based on the discussion. May contain errors.