SubZero Refrigerator Freezer Error Code 12 – How to fix? by KatyApplianceRepair.com
Sub-Zero error code EC 12 indicates
a refrigerator temperature warning. Below is a quick reference
and troubleshooting guide for this code.
Quick Reference
| Error Code | Meaning | Severity |
|---|---|---|
| EC 12 | Refrigerator compartment temperature too warm — similar to EC 10 | Low |
Cause & Solution
| Cause | What to Check | Fix |
|---|---|---|
| Door left open or temperature rising | Verify door seal and closing; check air vents for blockage | Close the door; power cycle the unit if error persists |
Need help with EC 12?
Call (281) 688-6685 —
Katy Appliance Repair: same-day Sub-Zero diagnostics in Katy, TX.