Press the Delayed Start key to switch the water hardness level to position 1 Press the Delayed Start key to switch the water hardness level to position 2 Press the Delayed Start key to switch the water hardness level to position 3 Press the Delayed Start key to switch the water hardness level to position 4 Press the Delayed Start key to switch the water hardness level to position 5 Press the Delayed Start key to switch the water hardness level to position 5