On models with tank level detection, the machine refuses to brew or shows a tank warning even when the tank is full.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Magnetic float stuck in tank, Dirty level sensor window, Faulty reed switch or Hall sensor, Scale buildup in tank

Safety: Unplug the machine before removing the tank.

Clean the tank: Empty the tank and rinse thoroughly. Check for a floating magnet inside (float). Ensure it moves freely; clean any scale or slime.
Clean sensor area: Wipe the outside of the tank where it faces the machine's sensor window.
Refit and test: Fill the tank and reseat it firmly. Check if the warning clears.

If the machine still does not detect the tank level, the internal sensor (reed switch or Hall sensor) may be faulty and needs replacement.

Medium 3/5

Water Level Sensor

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