Waste can get trapped between the switch and the floor of the tank, or the membrane becomes stiff over time due to limescale buildup, "tricking" the motor into thinking the tank is full.

If the toilet bowl or connected basin isn't draining, the pump is failing to move liquid.

Macerator toilets are ingenious solutions for adding bathrooms in spaces without traditional gravity-fed drainage, but they are more complex than standard fixtures. Unlike a regular toilet, a macerator uses a high-speed rotating blade to grind waste and paper into a fine slurry, which is then pumped away through narrow pipes. While efficient, this mechanical process introduces several specific potential failure points. Common Mechanical and Operational Issues