Dryer will not start or stops shortly after start; display shows dC or dc; door icon may flash.

Safety first: Unplug the dryer or switch off the circuit breaker before any disassembly.

Step-by-step checks:

• Check door closure: Open and firmly close the door. Make sure no clothes are trapped between the door and frame and that the latch clicks positively.
• Inspect the latch hook: Look at the metal or plastic latch on the door and the strike on the cabinet. If bent, loose, or broken, the door may not engage the switch.
• Test the door switch: With power disconnected, remove the top panel (usually rear screws) and access the door switch from the front panel area. Disconnect the switch connector and test continuity with a multimeter while pressing the switch. It should show continuity when pressed and open when released.
• Check wiring: Inspect the wiring harness from the door switch to the main PCB for loose connectors, burnt pins, or damaged insulation.
• Replace faulty parts: If the switch fails continuity or the latch is damaged, replace the Samsung door switch assembly or door latch/strike as needed.

When to call a technician: If the wiring to the main PCB is damaged or the PCB is suspected faulty, professional diagnosis is recommended.