Electrolux ESF 6221 User Instructions page 10

– If the hardness setting is changed, the LED
indicator for the softener button lights up and
stays on for 5 seconds as confirmation and
then begins to flash again.
– The number of flashes corresponds to the new
hardness setting.
– The sequence of flashes is repeated several
times after a 5 second pause.
11.Once the hardness setting is correctly adjusted,
press the ON/OFF button.
The hardness setting is then stored.
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