Choose the warning shown on your machine. Check the model number and compare the full pattern with the manufacturer’s instructions before trying a fix.
Select your brand, then confirm the exact model and full code or light pattern. Indicator lights can change meaning when they flash instead of staying on. This database distinguishes manufacturer-documented meanings from possible causes; it does not diagnose an internal component from a display alone.
Keurig
K-Supreme
Check the rating label and model revision before following a repair or reset procedure.
Maintenance indicator
DESCALE light stays on
What it means
K-Supreme still requests completion of its descaling process. It is an indicator, not a numbered error code.
Possible causes
- Descale mode or rinse stages were interrupted.
- The brewer has not reached the step that clears the reminder.
What you can check yourself
- Check the exact K-Supreme variant and its user guide.
- Ensure the reservoir is seated and the brewer can dispense water.
Diagnostic sequence
- Enter the documented descale mode for your version.
- Complete descaling and all fresh-water rinse cycles until the indicator clears.
- If flow stops or the process cannot advance, use the model-specific guide.
When to contact service
Contact Keurig if the machine cannot pump water or the light stays on after a complete manufacturer procedure.
The linked manufacturer guide is for K-Supreme Plus; confirm the exact K-Supreme variant before using its button sequence.
Manufacturer source / model support · Detailed guide · Diagnose this model
Reviewed September 2026. Verify the manual for the exact model and market. Turn off and unplug when safe if you notice smoke, a burning smell or water near electrical parts. Never force a stuck brew group.