What Does This Error Mean?

The Keurig Iced button brews a hotter, more concentrated shot — it does not cool the coffee before it leaves the machine. Fill a glass to the brim with ice first, select the Iced setting, and choose the 8 oz cup size for the correct strength.

Affected Models

Keurig K-Elite
Keurig K-Supreme
Keurig K-Supreme Plus
Keurig K-Café
Keurig K-Iced

Common Causes

Glass not filled with enough ice — hot concentrate has nothing to chill against
Selecting 10 oz or 12 oz cup size, which over-dilutes the iced coffee concentrate
Iced button not available on older or basic Keurig models
Using a regular K-Cup when Over Ice or Iced varieties would give better results
Expecting cold coffee to come out of the machine — Keurig does not have a chiller

How to Fix It

Fill the glass to the brim with ice first.

The Keurig Iced button brews hotter than normal to compensate for the ice — the coffee chills on contact with the ice, not inside the machine. Fill the glass completely with ice before placing it under the brewer. A glass that is only half full will not chill the hot concentrate enough.
Select the 8 oz cup size for iced coffee.

With the Iced button activated, select the 8 oz (smallest) cup size. A larger size dilutes the concentrate too much and produces weak, watery iced coffee. The 8 oz concentrated brew over a full glass of ice gives the correct flavor balance.
Use an Over Ice K-Cup variety.

Several coffee brands sell K-Cups specifically labeled Over Ice or Iced. These blends are roasted and formulated to taste best at cold serving temperature, compensating for slight ice melt dilution. Regular K-Cups work too, but Iced varieties produce a noticeably better result.
Confirm your Keurig model has the Iced button.

The Iced button is available on the K-Elite, K-Supreme, K-Supreme Plus, K-Café, and K-Iced models. Basic models like the K-Classic and K-Mini do not have this feature. On those models, brew at the 6 oz setting over a full glass of ice for a similar result.
Combine Strong and Iced for a bolder result.

On models that support both buttons, press Strong and then Iced before selecting your cup size. The Strong + Iced combination brews an even more concentrated shot, producing a bolder iced coffee flavor. This is the closest a Keurig can get to a cold-brew-style iced coffee.

When to Call a Professional

The Iced function is a software and settings feature — no hardware repair is needed. Contact Keurig support if the Iced button is missing from a model that is supposed to have it.