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
This Error Applies To
Samsung NE63A6511 Series Ovens & Ranges
Related Error Codes
Main PCB sensor is open when oven is operating or sensor short
Door lock is misaligned or malfunctioning
Short in the control key
Main PCB temperature rises abnormally high
Oven sensor opened (over 2950 ohms) or Oven sensor shorted (under 930 ohms)
Main to Touch communication is interrupted
Power connection is installed improperly