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The options are 15, 30, 45, 60, 75, 90, or 0 for off. DISPLAY – allows you to set the language on the display. The options are English, Italian, French, Spanish, Portuguese, German or Dutch. WATER HARDNESS – allows you to set the hardness of the water used. To find out the water hardness in your area, you should contact your water supplier. The options are 0, 5, 10, 15, 20, 25.dh. 1.dh = 1.786.F = 1.25.e = 17.86ppm = 0.1786mmol/l) DESCALING – shows the number of litres of water that have been di