Error Code 24
The freezer defrost heater is not working
Critical
Stop using immediately - risk of damage or safety issue
Also displayed as: 24
What This Means
Defrost heater connector disconnected; Defrost heater burned out or open circuit; Temperature fuse or bimetal opened; Main PCB relay defect; Wiring harness damaged
What actually causes this:
The heating element failed or the protection fuse/thermostat opened
First Thing to Check
Check if frost is excessive in the freezer — no defrost heating causes severe frost buildup
Parts Involved
How to Fix
- 1
1. After separating Main PCB CN70_1 wire, measure resistance between CN70_1-7 and 3
- 2
2. Normal resistance should be 63 ohm (or 230 ohm) ± 7%
- 3
3. 0 ohm indicates heater short circuit
- 4
4. Infinite ohm indicates heater or wire open circuit (must power off first)
- 5
5. Check temperature fuse and bimetal integrity
This Error Applies To
Samsung RF22M9581 Series Refrigerators
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