Display repeatedly asks to empty drip tray or grounds container even when they are empty.

Safety first: Unplug the machine before cleaning sensor areas.

Step-by-step:

• 1. Clean drip tray and container: Wash both thoroughly, including any floats or magnets, and dry completely.
• 2. Clean sensor area: Wipe the area where the tray and container slide in, removing coffee residues and moisture.
• 3. Check floats: Ensure any float in the drip tray moves freely and is not stuck by dried coffee.
• 4. Reinsert firmly: Push the tray and container fully into place until they click.
• 5. Professional repair: If the message persists, the detection microswitch or sensor may be faulty and require replacement by Siemens.