Written by
Clara Bennett Appliance Care EditorPublished September 3, 2026Updated October 20, 2026
Content status:
Verified
Error codeEr01
ApplianceIce Maker
Quick answer
Er01 on U-Line RNP115 and URNP115 nugget ice machines means the evaporator is at 32F or more after 30 minutes of ice making.
Model compatibility: U-Line reuses codes across series and model years, so Er01 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
Er01 means the evaporator temperature is 32F or more after 30 minutes of ice making.
Er01 is a cooling-related code on U-Line RNP115 and URNP115 nugget ice machines. It shows when the evaporator temperature is still 32F or more after 30 minutes of ice making.
What the manual says to do
The troubleshooting table calls for a check for refrigerant leakage, which is work for a technician, and a check of the sensor and how it is attached. Power is restored once the cooling problem has been resolved.
Related codes
Er03: the same warm-evaporator idea, over a shorter time
For U-Line ice maker service in Los Angeles, call (310) 879-5776. Keep the model number, the code and any steps you tried within reach. See 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…
