Washer-dryer shows E17 and may not fill correctly; often related to water level sensing.

Safety first: Disconnect power and close water taps before working on the pressure system.

• Inspect pressure hose: Remove the top cover and locate the pressure sensor and its hose. Ensure the hose is firmly attached at both ends and not split or kinked.
• Clean pressure chamber: Detach the hose at the tub end and clear any detergent sludge or debris from the connection point.
• Test sensor: If your Grundig model uses an electronic pressure sensor, check its connector and wiring to the PCB. Use service data to verify output voltages or resistance if available.
• Replace sensor if faulty: If the sensor does not respond correctly or E17 persists after cleaning and reseating, replace the pressure sensor with a Grundig-compatible part.