“DESCALE” light or message stays on even after running a descale cycle; brewer continues to prompt for descaling.

Safety first: Allow the brewer to cool and unplug before moving or opening any panels.

• Repeat a full descale: Fill the reservoir with a 1:1 white vinegar and water solution (or Keurig descaling solution per instructions). Run multiple brew cycles without a K-Cup until the reservoir is empty, then let the unit sit for 30 minutes before flushing with fresh water.
• Follow model-specific reset steps: Some Keurig models require holding specific buttons (e.g., 8oz + 12oz or power + brew) after descaling to clear the light. Refer to the user manual and perform the exact reset sequence.
• Check flow rate: If water dribbles slowly during descaling, the flow meter may not detect enough flow to clear the descale flag. Perform a second descale and ensure strong flow from the spout.
• Power cycle: Unplug the brewer for 5 minutes, then plug back in and check if the light clears.
• If the light remains on: The flow meter or control board may be faulty and not registering the descale cycle. Professional diagnosis and possible replacement of the flow meter or main control board is recommended.