Mode running · Keurig K-Supreme and K-Supreme Plus
Keurig K-Supreme and K-Supreme Plus: Buttons flashing after holding 8oz and 12oz for 3 seconds (brewer off)
Descale Mode is on and waiting for you to start each descaling or rinsing brew.
- Which light
- Cup, drink or strength buttons
- Colour
- Colour not named by the maker
- Steady or flashing
- Flashing or blinking
What Keurig says to do
- Press the brew button; pour the hot liquid into the sink after each brew. Repeat until the ADD WATER light comes on.
- Empty and rinse the reservoir, fill it to MAX with fresh water, and when the buttons flash press brew again; repeat these rinses until the DESCALE notification turns off. The brewer then leaves Descale Mode.
- Foam during descaling is normal. If only a little water or air comes out, unplug, rinse the reservoir, refill with water and repeat the fresh-water rinse.
From K-Supreme Use & Care Guide: Before You Brew, Brewer Features, Regular Maintenance, Descaling and Troubleshooting and K-Supreme Plus Use & Care Guide: Before You Brew, Brewer Features, Descaling and Troubleshooting. This is the K-Supreme and K-Supreme Plus’s pattern; another Keurig machine may use the same light for something else — check the manual for your model.
Other Keurig K-Supreme and K-Supreme Plus lights
Mode running on other machines
The same need shows up as a different light on each machine — which is why a light cannot be read without the machine.
Sources
Every line on this page comes from Keurig’s own documents, read on the date shown. Nothing is taken from third-party manual sites.
- Keurig: K-Supreme Use & Care Guide: Before You Brew, Brewer Features, Regular Maintenance, Descaling and Troubleshooting — K-Supreme single serve coffee maker (US guide). dam.keurig.com Checked 2026-09-29.
- Keurig: K-Supreme Plus Use & Care Guide: Before You Brew, Brewer Features, Descaling and Troubleshooting — K-Supreme Plus single serve coffee maker (US guide). dam.keurig.com Checked 2026-09-29.