How do I configure the water hardness setting on my Melitta Look Therm Perfection coffee maker?

[EzraMarie]

To program the water hardness level on your Melitta Look Therm Perfection coffee machine, adhere to these guidelines: Begin by pressing and holding the CALC button for over two seconds. The CALC button will then begin to blink. The default setting is indicated by the CALC button flashing four times with pauses. To modify the water hardness level, repeatedly tap the CALC button until it flashes the number of times corresponding to your desired hardness level: one, two, or three flashes, each followed by a pause. Once you've chosen your setting, press and hold the CALC button for more than two seconds to save your changes; the light will then turn off. Remember, you cannot adjust the water hardness while the machine is brewing, and your selected setting will be retained even if the power cable is detached. If you're uncertain about your local water hardness, consult your local water supplier or utilize water hardness test strips, available for purchase. Correctly setting the water hardness level is key to preventing limescale buildup within your Melitta appliance, thereby ensuring it continues to perform optimally.