Samsung RS275 fridge: no water filter indicator reset
You are pressing the wrong button, press and hold the "Ice Type" button to reset. From the Owners Manual:


  • Change filter every 6 months. If indicator is purple, the filter has 1 month left.
  If indicator is red, quick replacement is strongly recommended.
  • When the water filter is replaced, reset the indicator by pressing the Ice Type
  button for 3 seconds.
  • To turn this indicator off, press the Ice Type and Child Lock buttons simultaneously
  and hold for 5 seconds.




Note: the light will "stay on", but it will change color to green. I personally have difficulty with this because of mild red-green color vision deficiency, and must have another family member confirm when the LED color change has occured.