Please follow these steps.
- Make sure your sieve and the milk carafe are empty and the water tank is full.
Use only one cleaning tablet.
- Press the middle button "menu" and then rotate the dial to find "Full Clean"
- Press the dial to select full clean and follow instructions.
- Once the cycle is done. Rinse the milk carafe and Sieve to make sure all particles are washed off. Also, take a wet towel and clean inside the top boiler before placing the sieve back.