Appliance Type: Washing Machine Applicable Brands: Bosch, Siemens
Error code Error 19 signals that the internal Aquastop system has been triggered. This safety mechanism activates when the appliance detects an unintended accumulation of water within the base pan (or drip tray) of the washing machine, indicating a potential leak.
Understanding the Aquastop Activation: The Aquastop is a crucial safety feature designed to prevent flooding. It uses a sensor switch located in the base tray of the unit. If water pools in this tray—even a small amount—the sensor completes a circuit, immediately closing the main water inlet valve and stopping the cycle, displaying Error 19. This action prevents further water intake until the fault is addressed.
Locating Potential Water Sources (Leak Check): Since the Aquastop is activated due to water presence in the base, the primary troubleshooting step is to meticulously check the machine for the source of the leak.
Draining Residual Water: Before proceeding, you must clear the water that triggered the sensor.
When to Contact a Specialist: If you have thoroughly checked for external leaks, dried the base tray completely, and the Error 19 code immediately returns upon starting a new cycle, the issue is likely internal and requires expert intervention.