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 loose or shorted; Defective door switch giving invalid readings; Wiring fault in door switch circuit
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 shorted
- 2
2. Test door switch: Door open — COM-NC (pins 1-3) should be < 1 ohm, COM-NO (pins 1-2) should be infinity
- 3
3. Test door switch: Door closed — COM-NC (pins 1-3) should be infinity, COM-NO (pins 1-2) should be < 1 ohm
- 4
4. If switch readings are inconsistent, replace door switch
Parts Commonly Needed for This Error
OEM part numbers confirmed by retailers
This Error Applies To
Samsung DV45T3400 Series Dryers (2020) (2020–present)
Related Error Codes
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Your dryer's temperature sensor isn't reading correctly
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The dryer motor isn't spinning properly