Error Code dF
The door switch isn't working properly
Moderate
Address soon - your appliance may not work properly
Also displayed as: dF
What This Means
Door sensor unit is loose; Door sensor unit is short-circuited; Defective door switch giving invalid readings; Wire harness damage to door switch
What actually causes this:
The switch that detects whether the door is open or closed has worn out or its connection came loose.
First Thing to Check
Open the door, check for anything stuck in the door latch area, then close it firmly and try again.
Parts Involved
How to Fix
- 1
1. Check if the door sensor unit is loose or has a short
- 2
2. Test door switch: Door open — COM-NC (pins 1-3) should be < 1 Ohm, COM-NO (pins 1-2) should be infinite
- 3
3. Test door switch: Door closed — COM-NC (pins 1-3) should be infinite, COM-NO (pins 1-2) should be < 1 Ohm
- 4
4. Check wire harness to door switch for damage
- 5
5. Replace door switch if readings are invalid
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung DV45A6400 Series Dryers (2024) (2024–present)
Related Error Codes
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A button on the control panel is stuck or shorted
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