How do I fix error code C-21 on a Samsung ovens & ranges?

1. undefined: Disconnect power and sub PCB 2. undefined: Check DLB, Bake, Broil, Convection relay operation 3. undefined: Verify relay resistance values are correct 4. undefined: Check for any damage on Main PCB 5. undefined: Measure oven sensor resistance (normal: 22-28 ohms) 6. undefined: Check connecting condition of harness related to oven sensor 7. undefined: Replace oven sensor if resistance abnormal 8. undefined: Replace main or sub PCB if no problems found elsewhere

Samsung Ovens & Ranges

Error Code C-21

Q: What does error code C-21 mean on a Samsung ovens & ranges?

Oven heating over (temperature overshoot) Sensor resistance abnormal; Heater relay malfunction; Damaged wiring connections; Main PCB defective

Oven heating over (temperature overshoot)

Moderate

Address soon - your appliance may not work properly

What This Means

Sensor resistance abnormal; Heater relay malfunction; Damaged wiring connections; Main PCB defective

How to Fix

1
Disconnect power and sub PCB
2
Check DLB, Bake, Broil, Convection relay operation
3
Verify relay resistance values are correct
4
Check for any damage on Main PCB
5
Measure oven sensor resistance (normal: 22-28 ohms)
6
Check connecting condition of harness related to oven sensor
7
Replace oven sensor if resistance abnormal
8
Replace main or sub PCB if no problems found elsewhere

This Error Applies To

Samsung NE59J7650W Series Ovens & Ranges

Service manual exact match: NE59N6650SG/AAService manual exact match: NE59R6631SG/AAService manual exact match: NE59J7650WSService manual exact match: NE59N6650SG

Related Error Codes

C-20

Oven sensor opened (circuit open)

C-d0

Shorted key (keypad short circuit)

C-d1

Door locking issue (door lock motor malfunction)

C-F0

Main PCB communication failure

C-30

PCB temp sensor opened (PCB temperature sensor circuit open)

C-31

PCB temp sensor shorted and PCB temp over during 10 seconds

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