Water symbol or WATER text displayed; the machine beeps and will not start brewing.

Safety first: Unplug the machine before removing the water tank if you need to inspect it closely.

• Refill tank: Fill the water tank to at least the MIN level and reseat it firmly.
• Check float movement: Tilt the tank and listen/feel for the float moving. If it does not move, rinse the tank with warm water and mild detergent.
• Clean tank contacts/area: Wipe the tank and the area where it sits to remove scale or coffee residue.
• Test with another tank (if available): If you have a spare Senseo tank, try it to rule out a defective float.
• Persistent warning: The internal reed switch may be faulty and should be replaced by a technician.