A tiny turbine inside the water intake measures how much water passes. If it’s stuck (due to debris or scale), the machine thinks no water is moving, yet the heater is on → Error 09.
The most frequent cause is a failure in the heating circuit, which may involve a faulty temperature sensor (NTC), triac, or thermal fuse. krups error code 09
Ensure the water tank is full and properly seated. Sometimes, a lack of flow can trigger secondary sensor errors. Krups Error Code 09: What It Means
Krups machines have a lifespan. Ask yourself these questions: Unplug the machine