648PRO Replace Filter Message


  • REPLACE FILTER should clear when the filter is removed and the new filter is installed.
  • May be an issue with water filter manifold, filter sensor, or electrical issue if filter light persists.

Core Issue:

  • What does REPLACE FILTER message mean?
  • Why is REPLACE FILTER displayed?
  • The water filter on a PRO48/648PRO has been replaced but the "REPLACE FILTER" light is not turning off.

Steps to Verify Issue:

If the REPLACE FILTER message does not clear:

  1. Ensure filter is seated properly.
  2. Remove and reinstall filter.
  3. If these steps do not resolve the issue, no further customer troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.


The REPLACE FILTER message indicates that the water filter has expired needs replacement.

Replacement water filters can be ordered from the Sub-Zero Accessory Store or from a Factory Certified Parts Distributor.

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