A freezer ice maker seen from below with its bin pulled out, a row of half-released crescent cubes caught on the ejector arm over the gray mold.

Sub-Zero UC-15I ICE light flashing blue: automatic shut-off

On the UC-15I undercounter ice maker, a flashing blue ICE light means the unit went into automatic shut-off.

(844) 773-0701

Mon–Sat, 8am–8pm

  • Ice making and harvest
  • Ice maker assembly replacement
  • Source: Sub-Zero

Book a visit

Three short steps, about a minute.

or call (844) 773-0701

What ICE flashing blue
actually means.

On the UC-15I undercounter ice maker, a flashing blue ICE light means the unit went into automatic shut-off. Sub-Zero names two triggers: two maximum-length freeze and harvest cycles in a row (55 minutes each), or 120 cycles in a row, about two days, without the bin switch sensing a full bin.

Sub-Zero ice maker display · also shown as ICE indicator flashing

What to do when ICE flashing blue shows on the ice maker

Before you book,
in this order.

Each step comes from Sub-Zero's own guidance for ICE flashing blue on its ice makers. Follow it to the end: the last card says whether this is a visit.

01

Make sure the water supply to the unit is turned on; the shutoff may be behind the kickplate, in a nearby cabinet or on a lower floor.

02

If the water was off, give the unit an hour; it should drop one or two batches of ice.

03

If a water filter is fitted, take it out and see whether ice making resumes, then book a visit if it does not.

Still there?

It usually turns into ice maker assembly replacement. Book with the code and the model number.

What not to do

A flashing ICE light is not a power or display problem. It is the ice maker's own protective stop after it failed to make ice normally.

What you may
notice with it.

The ice maker problems ICE flashing blue tends to arrive with. Answer these at the ice maker before anyone is booked.

All problems

Where ICE flashing blue usually leads

Ice maker assembly replacement.

Ice maker module, mold or twisting tray · moderate.

In Sub-Zero's own words

Two consecutive maximum freeze and harvest cycles (55 minutes per cycle).
Sub-Zero answer: UC-15I not running with ice indicator flashing Sub-Zero answer: UC-15I not running with ice indicator flashing Sub-Zero answer: UC-15I not running with ice indicator flashing

Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Sub-Zero UC-15I undercounter ice makers, indoor and outdoor. Built-in refrigerators with ice makers use numeric codes instead.

Sub-Zero ICE flashing blue ice maker repair,
where we come out.

The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered.

All service areas
A parent and a child filling two glasses with ice from the door dispenser in a bright family kitchen
For the heart of your home.

Questions
about ICE flashing blue.

Can I clear ICE flashing blue myself?
Make sure the water supply to the unit is turned on; the shutoff may be behind the kickplate, in a nearby cabinet or on a lower floor. If it comes back, it needs a visit.
Why is the ICE light on my Sub-Zero undercounter ice maker blinking blue?
The unit has put itself into automatic shut-off, usually because it was not getting water or its cycles ran far too long. Check the water supply first.
Can the water filter cause the ICE light to flash on a Sub-Zero UC-15I?
Yes. A clogged filter limits flow, and Sub-Zero suggests removing the filter to see if ice making resumes. The UC-15I bypasses the filter when it is out, so it keeps getting water.
How long should I wait after turning the water back on at my UC-15I?
About an hour. Sub-Zero expects one or two batches of ice in that time; if none drop, the unit needs a technician.

Back to your everyday

Still showing ICE flashing blue?

Book with the code or the blink pattern written exactly as the ice maker shows it, the full model number, and whether there is any water on the floor — when there is a code, that is where the diagnosis starts.

(844) 773-0701 Schedule a repair