Name: Samsung NX58M6650WS
Brand: Samsung

Question 1

What does error code C-20 mean on Samsung NX58M6650WS?

Accepted Answer

Oven temperature sensor open (resistance over 2950 ohms) or shorted (resistance under 930 ohms). Cause: Oven sensor resistance out of normal range (normal: 1080 ohms at room temperature); Damaged terminal or wire on sensor harness; Faulty main PCB (connector CNS301, normal resistance 2850 ohms).

Question 2

What does error code C-21 mean on Samsung NX58M6650WS?

Accepted Answer

Oven overheating — oven temperature exceeds 650°F (343°C) in any cooking function except self-clean. Cause: Faulty oven temperature sensor; Faulty DLB, broil, bake, or convection heater relay on sub PCB; Disconnected or shorted harness connected to main PCB; Relay stuck closed causing continuous heating.

Question 3

What does error code C-30 mean on Samsung NX58M6650WS?

Accepted Answer

PCB internal sensor opened (over 3900 ohms) or shorted. Cause: Faulty oven temperature sensor; Faulty main PCB internal sensor circuit; Loose or disconnected harness at PCB connectors CNP205, CNP206.

Question 4

What does error code C-31 mean on Samsung NX58M6650WS?

Accepted Answer

PCB ambient temperature too high — temperature around PCB is excessive. Cause: Cooling fan not operating; Blocked ventilation around PCB; Faulty oven temperature sensor causing false reading; Faulty PCB.

Question 5

What does error code C-d0 mean on Samsung NX58M6650WS?

Accepted Answer

Shorted keypad key detected. Cause: Ribbon cable from keypad not fully inserted into main PCB connector; Short circuit between main PCB and connector or keypad cable; Damaged membrane control panel; Short between connector CNS602 pins on main PCB.

Question 6

What does error code C-d1 mean on Samsung NX58M6650WS?

Accepted Answer

Door locking mechanism error — door lock motor or switch malfunction. Cause: Harness not connected properly to door lock switch motor; Abnormal door lock motor coil resistance (normal: 1750-1850 ohms); No AC 120V voltage supplied to lock motor; Faulty door lock micro switch; Faulty main PCB connector CNS300.

Question 7

What does error code C-F2 mean on Samsung NX58M6650WS?

Accepted Answer

Main PCB to Touch module communication error. Cause: Software version mismatch between Main PCB and Touch module; Faulty PCB.

NX58M6650WS

Error Codes

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Code	Meaning	Severity
C-20	Oven temperature sensor open (resistance over 2950 ohms) or shorted (resistance under 930 ohms)	Moderate
C-21	Oven overheating — oven temperature exceeds 650°F (343°C) in any cooking function except self-clean	Moderate
C-30	PCB internal sensor opened (over 3900 ohms) or shorted	Moderate
C-31	PCB ambient temperature too high — temperature around PCB is excessive	Moderate
C-d0	Shorted keypad key detected	Moderate
C-d1	Door locking mechanism error — door lock motor or switch malfunction	Moderate
C-F2	Main PCB to Touch module communication error	Moderate