Name: Samsung NEK55AC
Brand: Samsung

Question 1

What does error code C-10 mean on Samsung NEK55AC?

Accepted Answer

Oven sensor is open when the oven is operating. Cause: Connector at Main PCB not inserted; Connector at sensor not inserted; Temperature sensor failed open.

Question 2

What does error code C-21 mean on Samsung NEK55AC?

Accepted Answer

Internal temperature rises abnormally high — safety error. Cause: Oven sensor resistance out of spec; DLB/Broil/Bake/Convection relays on Main PCB not working normally; Wire harness on Main PCB disconnected; Oven sensor connector resistance abnormal.

Question 3

What does error code C-30 mean on Samsung NEK55AC?

Accepted Answer

PCB temp sensor is open when oven is operating. Cause: Main PCB on-board temperature sensor open.

Question 4

What does error code C-31 mean on Samsung NEK55AC?

Accepted Answer

PCB temp sensor is short when oven is operating. Cause: Main PCB on-board temperature sensor shorted.

Question 5

What does error code C-32 mean on Samsung NEK55AC?

Accepted Answer

PCB temperature rises abnormally high. Cause: Cooling fan relay failure; PCB thermal runaway.

Question 6

What does error code Cd1 mean on Samsung NEK55AC?

Accepted Answer

Key short circuit — keypad short detected on Sub PCB. Cause: Keypad cable not properly inserted into Sub PCB connector; Short circuit between Sub PCB connector and keypad cable; Defective Sub PCB.

Question 7

What does error code Cd2 mean on Samsung NEK55AC?

Accepted Answer

Door lock is mispositioned — door lock motor or switch fault during self-clean. Cause: Harness not connected with door lock switch and motor; Door lock motor resistance out of spec (normal: 8~15 ohms at room temperature); Door locking switch not working normally.

Question 8

What does error code CF1 mean on Samsung NEK55AC?

Accepted Answer

Communication between Main PCB and Sub PCB is interrupted. Cause: Connector of Main PCB not inserted; Connector of Sub PCB not inserted; Defective Main PCB.

Question 9

What does error code CF2 mean on Samsung NEK55AC?

Accepted Answer

Communication between Main PCB and Touch PCB is interrupted. Cause: Connector of Sub PCB not inserted; Sub PCB defective; Control PCB defective.

NEK55AC

Error Codes

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Code	Meaning	Severity
C-10	Oven sensor is open when the oven is operating	Moderate
C-21	Internal temperature rises abnormally high — safety error	Moderate
C-30	PCB temp sensor is open when oven is operating	Moderate
C-31	PCB temp sensor is short when oven is operating	Moderate
C-32	PCB temperature rises abnormally high	Moderate
Cd1	Key short circuit — keypad short detected on Sub PCB	Moderate
Cd2	Door lock is mispositioned — door lock motor or switch fault during self-clean	Moderate
CF1	Communication between Main PCB and Sub PCB is interrupted	Moderate