Samsung Ovens & Ranges
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; Heater element failure; DLB relay failure; Broil, Bake or Convection heater relay failure; Main PCB damage
How to Fix
- 1
Disconnect power
- 2
Measure oven sensor resistance 1080 ohms
- 3
Check broil, bake and convection heater resistances
- 4
Check DLB relay TB200 TB202
- 5
Check Broil relay TB203 TB204
- 6
Check Bake relay TB205 TB204
- 7
Inspect main PCB for damage
- 8
Replace defective components
This Error Applies To
Samsung NE63A6311S Series Ovens & Ranges
Service manual exact match: NE63A6311S