KitchenAid KES6551 Product Manual page 33

3.
Use the Mode Button to toggle and select the desired water hardness level.
4.
The selected water hardness will be indicated by the machine as follows:
Low hardness: Espresso mode LED indicator will turn on.
Medium hardness: Espresso and Steam mode LED indicators will turn on.
High hardness: Espresso, Steam, and Hot Water mode LED indicators will turn on.
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