U-Line Nugget Ice Machine Code 11 (E11): Reservoir Level Too High

E11 at a glance

Code

E11

Appliance

U-Line ice machine

Applies to

U-Line nugget ice machines: UONB115 and UHNB315

Type

Needs attention soon

Can you clear it yourself?

Sometimes, after the safe checks below

Most likely cause

Ice is leaving too slowly to lower the reservoir level

What you may notice with E11

• The display reads a bare 11, without an E.
• Ice output is slower than usual.
• The reservoir seems fuller than it normally is.
• The machine otherwise runs and stays lit.

How the ice machine detects E11

A nugget machine draws water into a reservoir and turns that water into ice as it runs. The control keeps track of how high the water stands, because the amount in the reservoir tells it whether supply and production are in balance. When the machine is making ice at a healthy rate, the level stays inside a narrow band.

If ice production lags, water keeps arriving and the level climbs above that band. The control shows 11 when it sees a high level, and it holds the code until the level comes down. The cause may be in the ice path, where something slows the output, or in the level sensing itself, which may read high when it should not. Because the two look alike from outside, testing separates them. The matching low-water reading on these machines is 12.

Likely causes of E11

• Ice is leaving too slowly to lower the reservoir level
• The level sensing reports high water that may not match the real level
• The fill is running past its mark and keeps topping up the reservoir

Can you keep using the ice machine with E11?

The machine can stay powered, but expect little ice while 11 is up. The code itself is no fire or shock risk. Do not drain or tilt the machine to bring the level down, since that moves water where it should not be. If water shows up outside the cabinet, or 11 returns right after a restart, switch it off and have it checked.

What you can safely check

1. Switch the machine off and leave it for ten minutes; do not drain or tilt it.
2. Restart it and see whether 11 returns.
3. Look into the ice chute and the bin for anything in the way.
4. Follow the water line and straighten any kinks.
5. Leave the panels closed.
6. If 11 appears again, contact us.

What our technician does for E11

• Separate an ice-path cause from a level-sensing cause
• Check the water level sensing against the real level
• Check the fill so the reservoir is not overfilling
• Repair the part that tested bad

How to keep E11 from coming back

• Keep the ice chute and bin free of blockages so ice can leave freely.
• Look along the water line now and then for kinks that change how it fills.
• Where scale builds from hard water, ask us about the right descaling routine.

Technical reference

Code

E11

Appliance

U-Line ice machine

Control family

U-Line nugget ice machines: UONB115 and UHNB315

Maker documentation

U-Line owner manuals and support

Checked

November 2026

Code meanings come from the maker’s documentation and our own repair work; we do not reprint the maker’s document. Confirm the full model number before acting on a code. We are an independent repair company, not affiliated with U-Line Corporation.