Turn the lever to the left to lock the lever, then turn the lever back to the front to unlock the lever.

Press and hold the button until the light turns off and then starts blinking orange and quickly again (approx. 7 seconds). Steps 5 and 6 must be completed within 45 seconds.

Lock the lever. The orange light should be blinking indicating that you have entered descaling mode. If not, start over from Step 3.