Select Control panel.
Information relating to the changing of filters has been described in the Filter replacement area:

Select Edit in the right top corner of the area:
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The Filter replacement display will open in editing mode:

Enter the desired reminder interval in months in the Reminder interval field. Alternatively, the value can be set using the blue slider. The interval value can be between 1 and 12 months. The factory setting is 4 months.
Select OK:
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The filter replacement reminder interval is now set.