Opening the casing usually voids your warranty. If your machine is new, contact Krups Support first.
If your machine is still under warranty, contact Krups Customer Service instead of opening it, as self-repair will void your coverage. krups error code 09
The machine thought the piston was at the bottom (pressing coffee), but a sensor says it never arrived. Pushing it back resets the mechanical "home" position. Opening the casing usually voids your warranty
if the sensor itself is fine but the board isn't receiving the signal. You can find official help through the Krups Repair Service or by contacting an authorized service center. Repair it Reuse it near you or help you identify your specific Krups model The machine thought the piston was at the
Hardened coffee grounds or debris have jammed the outlet or the upper puncture needle.
You will need to remove the front or side panels (depending on your specific model) to reach the boiler area.
If the mechanical mechanism or upper needle is stuck with sticky coffee residue, it must be cleared.