Error Code 78
The cabinet rear heater isn't working
Minor
Usually easy to fix - may resolve on its own
Also displayed as: 78
What This Means
Housing disconnection related to rear heater; Heater contact failure; Short circuit in heater element; Defective temperature fuse
What actually causes this:
The rear heater wire connection failed or the element burned out
First Thing to Check
Check for condensation on the outside of the refrigerator
Parts Involved
How to Fix
- 1
1. Check rear heater housing for separation
- 2
2. Check heater wire connections
- 3
3. Measure heater resistance (disconnect first) — normal: approximately 50-100Ω
- 4
4. Check for continuity in heater circuit
- 5
5. Replace rear heater if resistance is abnormal
This Error Applies To
Samsung DRZ18980R Series Refrigerators (2017) (2017–present)
Related Error Codes
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