Error Code 66
The door handle heater is not working
Moderate
Address soon - your appliance may not work properly
Also displayed as: 66
What This Means
Door handle heater connector disconnected; Door handle heater burned out or open circuit; Temperature protection fuse opened; Main PCB relay defect
What actually causes this:
The heating element failed or the wire came loose
First Thing to Check
Check if condensation or frost is forming on the door handle — that indicates heater failure
Parts Involved
How to Fix
- 1
1. After separating Main PCB CN51 wire, measure resistance between CN51 1 and 2
- 2
2. Normal resistance should be 135 ohm ± 7%
- 3
3. 0 ohm indicates short circuit
- 4
4. Infinite ohm indicates open or broken connection
- 5
5. Replace heater if out of specification
This Error Applies To
Samsung RF22M9581 Series Refrigerators
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