Classic (Formerly Built-In) Water Filter Replacement Indicator On

The water filter replacement icon appears when the water filter needs replacement. Either the volume of water the filter is rated for filters through or approximately one year passes. The water filter indicator appears in the control panel display as four drops of water passing through a horizontal sheet of paper between the temperatures.

• Some use and care guides state the water filter icon is on at all times and some guides stated the water filter icon flashes when it needs replacement.

  • Both of these are misprints.
  • The water filter icon turns on and is steady when the water filter needs to be replaced.
  • The normal state of the water filter icon is off when a good filter is installed and in use.

To reset the indicator:

1. Replace the water filter. See instructions specific to the water filter type:
   • How to Replace Push-In Style Water Filter: Use if the water filter pushes in to remove it.
   • How to Replace Twist-In Style Water Filter: Use if the water filter twists out to remove it.
2. Press and hold the white filter reset button to the left of the water filter on the front of the condenser cover for five seconds to reset the water filter life monitor.
   
3. If the icon still appears after replacing the filter and resetting the water filter life monitor, refer to Classic (Formerly Built-In) Water Filter Will Not Reset.
4. See also:
   • Classic (Formerly Built-In) (BI) Replacement Water Filter Part Number
   • Filter Needs Frequent Replacement
   • How to Purchase Water Filters and Air Filters
   • If the indicator does not appear after much longer than one year, verify the Icon Life Monitor is not disabled. See Classic Water Filter Icon Life Monitor When Filter is Bypassed.
   • For a list of units that have a water filter, and those that do not, see Sub-Zero Does Not Have a Water Filtration System.
   • For the UC-15I Undercounter Ice Maker filter replacement and reset, see Undercounter Ice Maker UC-15I Water Filter.

If these troubleshooting steps do not resolve the issue, service is necessary to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.

NOTE: Replacement water filters are not covered by Sub-Zero's warranty.