Written by
Clara Bennett Appliance Care EditorPublished September 3, 2026Updated October 20, 2026
Content status:
Verified
Error code12 / E12
ApplianceIce Maker
Quick answer
Code 12 is E12 on the display: low water level, with a service notice in the app.
Model compatibility: U-Line reuses codes across series and model years, so 12 / E12 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Displayed form of E12: water level low; a service notice is generated in the app.
Code 12, the display form of E12, tells you the water level is low. The machine is not getting enough water into the reservoir, and a service notice is generated in the app.
Applies to
The UHNB315 nugget ice machine and the UOCP115 outdoor clear ice machine; both are current models.
If it shows up
Note whether the app has sent its notice and call service if the code does not go away.
Related
11 / E11: water level high, the reverse situation.
People in Los Angeles can call (310) 879-5776 for U-Line ice machine service. Say which code is on the display and which model you own. Related page: ice maker repair.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your U-Line appliance?
Book a specialist visit for a clear estimate and approval before any repair.
U-Line products are compact, built-in, and often visually similar across generations. Effective repair starts with the exact model, the symptom you can…
