Ice Maker Diagnostics

U-Line Ice Maker
Error Codes

Meanings, severity levels, safe checks you can perform, and when to call a technician.

Enter the code shown on your ice maker display

Is it safe to keep using it?

Depends on code severity. Low/Medium codes often allow continued use, High severity requires immediate stop.

Can error codes be reset?

Some codes clear after power cycle. Persistent codes indicate underlying issues needing repair.

When should I stop using it?

Stop immediately for water leak codes, burning smell, or any High severity error.

Most Common Codes

E0 E1 E2 E3 NO-ICE E4 SMALL-CB SLOW-ICE WATER-SUP DOOR-AJAR

All Codes

DOOR-AJAR E0 E1 E2 E3 E4 NO-ICE SLOW-ICE SMALL-CB WARM-CAB WATER-SUP

Error Code Directory

Click any code for detailed troubleshooting steps

Low Medium High

Code Meaning Severity Common Symptom

DOOR-AJAR Door Open Too Long Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View E0 Upper Door Open Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View E1 Refrigerator Thermistor Open Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View E2 Evaporator Thermistor Open Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View E3 Freezer Thermistor Open Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View E4 Ice Maker Thermistor Open Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View NO-ICE No Ice Production Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View SLOW-ICE Slow Ice Recovery Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View SMALL-CB Small Crescent Cubes Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View WARM-CAB Refrigerator Section Too Warm Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View WATER-SUP Water Supply Problem Medium The owner notices a real change in cooling, ice production, door behavior, or storage conditions. View