Machine frequently asks to refill water even though the tank is nearly full.

Safety first: Unplug before sensor work.

Correction steps:

• Clean tank: Remove and wash the tank, paying attention to the float chamber. Ensure the float moves freely.
• Descale float area: Remove limescale that may cause the float to stick.
• Check magnet: Verify that the magnet is still present in the float. If missing, replace the float or tank.
• Sensor test: If the problem persists, the reed or Hall sensor in the machine may be faulty and should be replaced.