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Krups EA8908 Evidence: Improving Coffee Strength, Grinder Settings & Comparing to EA8298

cztom1 24621 17
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How can I make a Krups EA8908 brew stronger and increase the grinder time?

The thread does not confirm a simple user setting that reliably makes the EA8908 stronger; official Krups support reportedly did not provide a fix, and if the machine is under warranty the advice was to send it to service [#17543239][#17220537] One user posted a way to enter the service/calibration menu: remove all containers, plug the machine in, turn it on and off, then with the machine off but powered hold espresso + cappuccino + tea in turn, and choose calibration [#20211293] Another post says that in the service menu there is also a grinder setting and that it was set to 8 seconds after calibration, so the grind time may be adjustable there on some units [#20388399] For comparison, an older EA8250 was said to allow grinder-time settings from 1 to 5, with 5 being about 12 seconds, but the EA8908 owner could not find that option [#18421070] Even so, users still reported weak coffee and wet grounds, so no definitive fix was established in the thread [#17543740][#20388399]
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  • #1 17209403
    cztom1
    Level 7  
    Posts: 5
    Rate: 7
    Hello
    I have expres krups evidence 8908.
    After selecting long caffe and the dark mode on - the amount of coffee to be made 130ml coffee comes out normal, not too strong
    I am currently pouring Pellini Espresso Bar coffee
    Grinding time about 8s, setting the grinder to 1,
    Can you somehow increase the power of coffee?
    Can you somehow increase the length of coffee grinding ?? - service menu?
    Thank you for your help


    I have a comparison to Krups EA8298 where, despite the larger amount of coffee to make 160 ml, the coffee comes out stronger.
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  • #2 17217421
    ssss
    Level 38  
    Posts: 3347
    Help: 464
    Rate: 1765
    Hallo.8s correctly may already be used stones in the grinder and that's why they had a little coffee.
  • #3 17219251
    cztom1
    Level 7  
    Posts: 5
    Rate: 7
    Hello

    Express is only 2 months old and 90 coffees behind it so the grinder is rather ok
  • #4 17219611
    ssss
    Level 38  
    Posts: 3347
    Help: 464
    Rate: 1765
    I have already had such a case that bad material was used to produce gravel stones.
  • #5 17219707
    cztom1
    Level 7  
    Posts: 5
    Rate: 7
    So the grinder to be replaced ??, and what does the service menu look like ??, maybe something wrong was set up there?
  • #6 17220537
    ssss
    Level 38  
    Posts: 3347
    Help: 464
    Rate: 1765
    Hello
    Please check the service manual. If it is under warranty, please take it to the service center.
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  • #7 17220755
    cztom1
    Level 7  
    Posts: 5
    Rate: 7
    Hello

    Thank you, I think I will give it to the service for help if it doesn't increase the grinding length to 10 s, the book does not provide such information. We will see what the website will say
  • #8 17541836
    bigle
    Level 11  
    Posts: 61
    Rate: 33
    Hello, I have the same problem with this machine - even the highest quality black coffee comes out to say the least. At work, I have been using Krups EA8108 for a few thousand zlotys cheaper for several years and makes coffee much better. Did the website solve your problem?
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  • #9 17542711
    ssss
    Level 38  
    Posts: 3347
    Help: 464
    Rate: 1765
    It was still necessary to check what circles fall out. Are they quite large then check the coffee temperature 1cm under the outlet is to be about 84 degrees
  • #10 17543239
    cztom1
    Level 7  
    Posts: 5
    Rate: 7
    Hello, I contacted the official Krups website, however, I did not get help how to improve the quality and strength of coffee, maybe this is their factory defect it's hard to admit it now
    If you donate to the website, let me know if they have helped
  • #11 17543740
    bigle
    Level 11  
    Posts: 61
    Rate: 33
    The discs come out dry but probably smaller than with EA8108. The coffee is hot enough. Well, it is not tragic, you can drink it, but the most annoying me is that a much cheaper espresso machine from the same company makes definitely better coffee. I checked on the same type of coffee at work and at home. With EA8108 coffee comes out more aromatic, meaty with better crema. In fact, without the "Dark" option, there is no reason to switch on this more expensive machine. The only advantage of Evidence is the very good milk frothing system. Unfortunately, after 2 months of using EA8908 I regret buying.
    Somewhere on Elektroda someone described entering the service menu where you could set the grinding time but now I can't find it.
  • #12 18420804
    rmroko
    Level 6  
    Posts: 6
    Rate: 1
    Welcome to the forum, I am also looking for something on this topic, because my krups also has this symptom. just as if the coffee grinder was too short. I once had a krupsa ea8250 and there you could actually change the settings of the mill as well as calibrate the piston. here at ea891d I have no idea how to do it. and this option should be there too. maybe someone something ... I would be very grateful (and others certainly too) :)
  • #13 18421020
    sorier
    Level 30  
    Posts: 1099
    Help: 166
    Rate: 630
    Briefly i.e. how much?
  • #14 18421070
    rmroko
    Level 6  
    Posts: 6
    Rate: 1
    short, i.e. I did not measure time, but the cookie is certainly not centimeters and falls apart, despite the focus on "dark" and the coffee is weak. like I say - I have a comparison with ea8250. I have the impression that he grinded for 1-2 seconds longer and the coffee was black (like strong coffee) and the cookie was beaten and did not fall apart. surely 1 cm thick.

    that's why I think it's a matter of setting the length of the coffee grinder. and in ea8250 I know that the service menu allowed setting from 1-5 (5 it was probably 12s)
  • #15 18466993
    rraaffiixx
    Level 2  
    Posts: 3
    Rate: 8
    Hello

    I have the same problem, too, I had a weak coffee 4-5 s and a full cookie in the tank spits out every second coffee as if it were making two coffees from one cookie is this normal? Someone has already found out how to enter this service menu?
  • #16 20109400
    KrzTym
    Level 9  
    Posts: 19
    Rate: 31
    Hello,
    I also have EA891 and the grinder had less than 5 seconds, the coffee was weak and instead of a cookie ... some coffee falls out. I don't know how to change the grinding time. Save!
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  • #17 20211293
    KrzTym
    Level 9  
    Posts: 19
    Rate: 31
    I am giving you how to enter the service menu. Maybe someone will need:

    Calibration
    1. All containers are removed (water and coffee grounds),
    2. Turn on the plug to the electricity,
    3. Turn on and turn off the coffee machine,
    4. With the coffee machine turned off (but with electricity) press (and hold down) espresso cappuccino tea in turn,
    5. Select calibration in the menu,
    6. Put the calibration disk in,
    7. Put the grounds container, the water container filled with water, put the cup on the drip,
    (8. We refill the grinder container with coffee - I do not know if this step is necessary, I did not pass the calibration positively - no disc),
    9. Press ok and calibrates.
  • #18 20388399
    Ekspresrepair
    Level 5  
    Posts: 5
    Rate: 1
    Hello, I'm joining the topic, I had the same problem grinding the grinder briefly, the calibration in the service menu goes to the end, however, the coffee grounds are still wet after replacing all the seals, moreover, there was a problem that after brewing coffee or after the self-test, it sprays the rest of the water from the boiler after dismantling the two-bar valve turns out to be that the double-bar is suspended what's next? pls help

    Added after 29 [minutes]:

    Ok, one problem from the head in the new krups is a sensor in the upper part of the housing If it is exposed, the coffee machine is really getting stupid, while the problem with wet grounds remains, even though the calibration is correct when choosing the right height of the disc, little else in the service menu, apart from calibration, there is also a grinder and the gringer option is set to 8 seconds and they actually had 8 seconds after the end of the calibration process, they still had less time.help

Topic summary

✨ The discussion revolves around the Krups EA8908 Evidence espresso machine, focusing on issues related to coffee strength and grinder settings. Users report that despite selecting the "long caffe" and "dark mode" options, the coffee produced is not strong enough, with some comparing it unfavorably to the EA8298 model. Suggestions include checking the grinder settings, potential calibration through a service menu, and concerns about the quality of grinder stones. Users express frustration over the machine's performance, noting that even high-quality coffee beans do not yield satisfactory results. Some participants share methods to access the service menu for calibration and adjustments to grinding time, which is currently set to 8 seconds. Overall, there is a consensus that the EA8908 does not meet expectations compared to other models in the Krups lineup.
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FAQ

TL;DR: If your Krups Evidence EA89xx coffee is weak, verify brew temperature near 84°C and calibrate the grinder; “1cm under the outlet is to be about 84 degrees.” [Elektroda, ssss, post #17542711]

Why it matters: Owners of Krups EA8908/EA891/EA8298 want stronger coffee, consistent dosing, and a simple path to fix short grind times.

Quick Facts

How do I enter the Krups Evidence EA89xx service menu and calibrate the grinder?

Use the hidden service menu to calibrate dosing. How-To:
  1. With power connected and machine off, press and hold Espresso, then Cappuccino, then Tea.
  2. Choose Calibration, insert the calibration disk, and reinstall water and grounds containers.
  3. Place a cup and press OK to run calibration. [Elektroda, KrzTym, post #20211293]

What grinder runtime should I see on EA891/EA8908?

After calibration, the service menu shows Grinder time as 8 seconds. One owner noted, “gringer option is set to 8 seconds,” yet actual grinding remained shorter. This mismatch points to a dosing control issue rather than beans. [Elektroda, Ekspresrepair, post #20388399]

My grinder runs for under 5 seconds and coffee is weak—what's happening?

This symptom matches under-dosing: the machine grinds very briefly, the cup is weak, and loose grounds fall instead of a puck. Address the short grind before changing beans or recipes. [Elektroda, KrzTym, post #20109400]

How can I check whether brew temperature is correct?

Measure near the spouts. Place a thermometer about 1 cm below the outlet; expect about 84°C. As one expert put it, “1cm under the outlet is to be about 84 degrees.” Consistent temperature supports fuller extraction and crema. [Elektroda, ssss, post #17542711]

What do puck size and appearance tell me on this machine?

Inspect the discs ejected after brewing. Check if they are large and cohesive, then verify temperature around 84°C under the outlet. Puck size and heat together help isolate dosing versus thermal issues. [Elektroda, ssss, post #17542711]

Can I increase the grind time to 10 seconds via a menu?

A user sought a 10-second setting but found no information in the manual and planned to consult service. The public user guide does not document extending grind time beyond defaults. [Elektroda, cztom1, post #17220755]

How does the EA8908 compare to EA8108 for coffee strength?

An owner using both reported the EA8108 makes stronger, more aromatic black coffee with better crema. They praised the Evidence for milk frothing but regretted the purchase for black coffee strength. [Elektroda, bigle, post #17543740]

How does the EA8908 compare to EA8298 on long coffees?

One owner found the EA8298 produced stronger coffee even at a larger volume (160 ml) than the EA8908 at 130 ml. That indicates dosing or extraction differences between models. [Elektroda, cztom1, post #17209403]

My grounds stay wet or water sprays after brewing—what else should I check?

Investigate mechanical and sensor faults. One case showed a stuck double-bar valve causing wet grounds, and an exposed upper housing sensor causing erratic behavior. Fixing these restored normal operation. [Elektroda, Ekspresrepair, post #20388399]

It's under warranty—should I take the EA89xx to service for weak coffee?

Yes. Check the service manual and use authorized service while under warranty. They can diagnose burrs, valves, or control calibration quickly and safely. [Elektroda, ssss, post #17220537]

My EA8908 is only 2 months old with about 90 coffees—does that rule out grinder issues?

One owner reported similar age and usage and assumed the grinder was fine. New machines can still need calibration or inspection if results disappoint. [Elektroda, cztom1, post #17219251]

Can defective burrs cause weak coffee even early in ownership?

Yes. A technician noted cases where poor burr material caused problems. “Bad material was used to produce gravel stones,” requiring grinder replacement under service. [Elektroda, ssss, post #17219611]

Is 'Dark' mode enough to strengthen long coffees on Evidence?

Dark mode helps, but one owner still found black coffee unimpressive compared to cheaper models. They saw better results on EA8108, with Evidence excelling mainly at milk drinks. [Elektroda, bigle, post #17543740]

My machine spits out every second coffee like it made two from one puck. Is that normal?

No. An owner reported weak coffee, 4–5 second grinding, and every second coffee ejected as a full puck. That behavior signals a dosing or control fault to diagnose. [Elektroda, rraaffiixx, post #18466993]
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