Written by
Elena Vasquez Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeEr01
ApplianceIce Maker
When Er01 appears
The RNP115 and URNP115 nugget ice machines raise Er01 when 30 minutes of ice making pass and the evaporator still reads 32F or more.
Manual troubleshooting list
Look for a refrigerant leak. This job belongs to a technician.
Examine the sensor and how it is attached.
After the cooling problem is fixed, power the machine back on.
Compare with these codes
Er03: the same warm reading, caught sooner at 10 minutes.
Er25: the reverse, an evaporator that is freezing.
San Francisco nugget ice maker service
For U-Line ice maker service in San Francisco and the Bay Area, phone (415) 329-7078. Before dialing, collect the Er01 code, the model number and any steps already taken.
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 is at 32F or more after 30 minutes of ice making.
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.
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your U-Line appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
