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
- Service menu on EA89xx exposes a Grinder time parameter that reports 8 seconds after calibration. [Elektroda, Ekspresrepair, post #20388399]
- Some EA891 units grind in under 5 seconds, leading to weak coffee and loose grounds instead of firm pucks. [Elektroda, KrzTym, post #20109400]
- Target brew-outlet temperature is about 84°C measured 1 cm below the spouts. [Elektroda, ssss, post #17542711]
- Service menu entry: with power connected and machine off, hold Espresso, then Cappuccino, then Tea; Calibration requires a disk. [Elektroda, KrzTym, post #20211293]
- User comparisons: EA8108 often yields stronger, more aromatic coffee; Evidence excels at milk frothing. [Elektroda, bigle, post #17543740]
How do I enter the Krups Evidence EA89xx service menu and calibrate the grinder?
Use the hidden service menu to calibrate dosing. How-To:
- With power connected and machine off, press and hold Espresso, then Cappuccino, then Tea.
- Choose Calibration, insert the calibration disk, and reinstall water and grounds containers.
- 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]
