Breville coffee maker displays ADD WATER even when the tank is full.

Safety: Unplug the machine before cleaning around electrical areas.

Steps:

• Remove and rinse the tank: Clean the reservoir with warm soapy water. Ensure the float moves freely.
• Inspect sensor area: On models with an optical sensor, clean the clear window on the machine body where the tank sits.
• Reseat the tank: Firmly push the tank into place until fully seated. Check for cracks or warping that prevent proper seating.

Advanced:

• Access the water level sensor (reed switch or optical sensor) and check for loose wiring or corrosion.

Resolution: Replace the water tank if the float is defective. Replace the level sensor if it does not respond to a magnet or cleaning.