Error Code Reference
Sub-Zero Error Codes
Complete reference guide for Sub-Zero appliance error codes. Find your error code below to understand what it means and how to respond.
3
Error Codes
1
Appliance Types
0
DIY Possible
Sub-Zero refrigerator Error Codes
EC 50warning
Evaporator thermistor fault in refrigerator section
Possible causes:
- Damaged thermistor
- Loose connection
- Control board issue
Try this first:
Try resetting by unplugging for 5 minutes. If code returns, service is needed.
Professional service required
EC 51warning
Evaporator thermistor fault in freezer section
Possible causes:
- Damaged thermistor
- Loose connection
- Control board issue
Try this first:
Try resetting by unplugging for 5 minutes. If code returns, service is needed.
Professional service required
EC 40warning
Condenser thermistor fault
Possible causes:
- Dirty condenser
- Damaged thermistor
- High ambient temperature
Try this first:
Clean condenser coils thoroughly. Reset and monitor. If code returns, service is needed.
Professional service required
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