Name: Samsung NV51M9770SS
Brand: Samsung

Question 1

What does error code C-20 mean on Samsung NV51M9770SS?

Accepted Answer

Oven temperature sensor malfunction. Cause: Oven sensor open circuit; Oven sensor short circuit; Damaged wire harness connections; Poor connector contact.

Question 2

What does error code C-21 mean on Samsung NV51M9770SS?

Accepted Answer

Oven temperature control failure - overheating. Cause: Faulty temperature sensor reading; Defective broil heater; Defective bake heater; Defective convection heater; Malfunctioning relay on Main PCB; Disconnected harness.

Question 3

What does error code C-23 mean on Samsung NV51M9770SS?

Accepted Answer

Temperature probe circuit fault. Cause: Probe sensor shorted; Damaged wire on harness; Damaged terminal on harness; Loose connector connection.

Question 4

What does error code C-30 mean on Samsung NV51M9770SS?

Accepted Answer

PCB temperature sensor malfunction. Cause: NTC sensor open circuit; NTC sensor short circuit; Broken solder joint on PCB; Damaged sensor component.

Question 5

What does error code C-31 mean on Samsung NV51M9770SS?

Accepted Answer

Safety interlock triggered - excessive temperature detected. Cause: NTC sensor malfunction; Faulty heater relay; Stuck relay contacts; PCB circuit pattern damage.

Question 6

What does error code C-70 mean on Samsung NV51M9770SS?

Accepted Answer

Steam generation temperature sensor circuit open. Cause: Steam sensor not inserted at main PCB; Steam sensor connector not inserted at sensor; Defective temperature sensor; Main PCB failure.

Question 7

What does error code C-72 mean on Samsung NV51M9770SS?

Accepted Answer

Steam drain pump circuit malfunction. Cause: Ground wire disconnection on steam generator; Pump motor not operating; Faulty wire connection to pump motor; Main PCB failure.

Question 8

What does error code C-A2 mean on Samsung NV51M9770SS?

Accepted Answer

Cooling fan motor circuit malfunction. Cause: Connector at main PCB not inserted; Connector at motor not inserted; Faulty cooling motor; Hall sensor PCB failure; Wire harness disconnection.

Question 9

What does error code C-d0 mean on Samsung NV51M9770SS?

Accepted Answer

Keypad control circuit short circuit. Cause: Keypad cable not inserted into connector on sub PCB; Short circuit between Sub PCB connector pins; Short circuit between keypad and cable; Damaged connector or keypad.

Question 10

What does error code C-d1 mean on Samsung NV51M9770SS?

Accepted Answer

Door locking mechanism failure. Cause: Harness not connected with door lock switch and motor; Door lock motor coil resistance abnormal; Insufficient voltage supplied to lock motor; Door locking switch not working.

NV51M9770SS

Error Codes

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Code	Meaning	Severity
C-20	Oven temperature sensor malfunction	Critical
C-21	Oven temperature control failure - overheating	Critical
C-23	Temperature probe circuit fault	Moderate
C-30	PCB temperature sensor malfunction	Critical
C-31	Safety interlock triggered - excessive temperature detected	Critical
C-70	Steam generation temperature sensor circuit open	Moderate
C-72	Steam drain pump circuit malfunction	Moderate
C-A2	Cooling fan motor circuit malfunction	Moderate