SubZero Refrigerator Freezer Error Code 15 – How to fix? by KatyApplianceRepair.com
Sub-Zero error code EC 15 indicates
a sealed-system fault. Below is a quick reference
and troubleshooting guide for this code.
Quick Reference
| Error Code | Meaning | Severity |
|---|---|---|
| EC 15 | Sealed-system fault — unit not maintaining temperature | High |
Cause & Solution
| Cause | What to Check | Fix |
|---|---|---|
| Sealed-system malfunction (compressor, refrigerant, or related components) | Listen for unusual compressor noises; check if condenser fan runs | Reboot the unit; if code returns, a certified technician must diagnose the sealed system |
Need help with EC 15?
Call (281) 688-6685 —
Katy Appliance Repair: same-day Sub-Zero diagnostics in Katy, TX.