What does error code C-21 mean on a Samsung NE63A6511S?

Oven heating over - internal temperature rises abnormally high Oven sensor failure; Stuck bake or broil heater relay; Damaged convection heater relay; Main PCB malfunction

How do I fix error code C-21 on my Samsung NE63A6511S?

1. undefined: Disconnect power and measure oven sensor resistance 2. undefined: Check broil, bake, and convection heater resistance 3. undefined: Check DLB, Broil, Bake and Convection heater relay operation (TB200, TB202, TB203, TB204, TB205) 4. undefined: Inspect for wire harness damage to Main PCB 5. undefined: Replace Main PCB if relays are not working normally

Samsung NE63A6511SOvens & Range

Error Code C-21

Oven heating over - internal temperature rises abnormally high

Moderate

Address soon - your appliance may not work properly

What This Means

Oven sensor failure; Stuck bake or broil heater relay; Damaged convection heater relay; Main PCB malfunction

How to Fix

1
Disconnect power and measure oven sensor resistance
2
Check broil, bake, and convection heater resistance
3
Check DLB, Broil, Bake and Convection heater relay operation (TB200, TB202, TB203, TB204, TB205)
4
Inspect for wire harness damage to Main PCB
5
Replace Main PCB if relays are not working normally

Other Error Codes for NE63A6511S

C-d1

Door lock is misaligned or malfunctioning

C-30

Main PCB sensor is open when oven is operating or sensor short

C-d0

Short in the control key

bAd LinE

Power connection is installed improperly

C-31

Main PCB temperature rises abnormally high

C-20

Oven sensor opened (over 2950 ohms) or Oven sensor shorted (under 930 ohms)

C-F2

Main to Touch communication is interrupted

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