Why does my Whirlpool refrigerator ice maker not make ice exactly one day a week every week?
I've never heard of this, 

Here's what I could dig up:


  Hold down the "Door Alarm" button for three seconds until "F or C" or
  "On or Off" appears on the display. Many Whirlpool food appliances
  comply to Jewish religious law by including a "Sabbath" mode, which
  disables many of the refrigerator's features, including the ice maker.
  Tap the "Freezer +" or "-" buttons until "SAB" appears on the display.
  Tap "Refrigerator +" until "Off" appears on the screen. Hold down the
  "Door Alarm" button for a further three seconds to confirm the new
  settings.
  
  Read more: How to Fix an Ice Maker on a KitchenAid Refrigerator |
  eHow.com
  http://www.ehow.com/how_7954484_fix-ice-maker-kitchenaid-refrigerator.html#ixzz29aiNXHuy