The Whirlpool Corporation designed Duet washers to automatically measure the amount of water that is used per cycle, based on predefined specifications. Many of the machines have at least two sensors that can detect the size of a load of clothes and even the types of garments. During the cycle, the Duet washer can also detect the amount of soapy suds in the drum. Based on these measurements the machine adjusts the water level. This automation is a registered trademark called "6th Sense Intuitive Controls." As the user, you should know that fluctuations in your Duet washer's water levels are by design and not a sign of a malfunction.
-- (see References #3, Page 10, "6th SENSE® Intuitive Controls")
Whirlpool states that when you select a cycle on the Duet washer, preset options, such as water temperature, spin speed and soil level, are all ready to go. This is for your convenience, but you do have the option of modifying these parameters of a cycle, if you think the change will affect cleaning results. For example, you can press the "Soil Level" button to select "Heavy" instead of "Normal," for an especially dirty load of clothes. The Soil Level option increases or decreases the agitation or tumble time inside the drum, and doesn't necessarily affect the amount of water used during the washing cycle. You can make these changes at the beginning or in the middle of the cycle. The color of the lighted indicators is a follows: "Green" is the current selection and "Amber" is the selectable options. No illumination means the modifier is unavailable.
The last, but maybe most important modifier on Duet washers is the "Rinse" option. You have a choice of "Max," "Extra" or "Normal" rinsing after the washing phasing of the cycle. Extra adds another rinsing phase to the cycle. Max provides the best rinse level to ensure nearly total removal of residual detergent from your clothes. Pressing the "Rinse" button will illuminate and select your desired option.
Whirlpool's Duet washers don't completely fill with water, because it's unnecessary for every load of clothes. That's why the company built in controls that offer users a choice when cycle modifications are necessary. However, households should clean the entirety of the washer drum as a part of regular monthly maintenance. Whirlpool programs a cleaning cycle on many of its Duet washers called "Affresh." This is another trademarked name and it also concerns washer cleaning tablets in addition to the name of the cycle. The most notable aspect of the Affresh cleaning cycle is it uses a higher water level than the actual clothes washing cycles, maybe in an effort to reach every corner of the drum.