I have replaced the water filter cartridge in my Whirlpool SD25 American, side by side, frige freezer.
The control panel water filter is still flashing 0.1%(99.9% Usage) indicating a replacement cartridge is required. The control panel display should show 100% (Zero Usage) when a new water filter has been fitted.
How do I reset % filter monitor in the control panel?

Thomas McManus, June 2009

press and hold the OK button for 10 seconds

Neil K, July 2009