14 GV 640 Service Manual
For internal use only
4.3.2 Water hardness
1. Keep start button B pressed.
2. Turn the programme selection knob C until the salt refill indicator blinks.
3. Release start button B. The current setting is shown, see chart.
4. To change the setting turn the programme selection knob until the right setting is shown.
4.3.3 Storing
1. Keep start button B pressed.
°dH
Hardness
range
mmol/l Setting
0 - 6 Soft 0 – 1.1 0 (off) 0 0 0
7 - 16 Medium 1.2 – 2.9 1 0 0 X
17 – 21 Hard 3.0 – 3.7 2 0 X X
22 - 35 Hard 3.8 – 6.2 3 X X X