Error Code C-21
Oven sensor short or internal temperature rises abnormally high
Moderate
Address soon - your appliance may not work properly
What This Means
Oven sensor short circuit; Defective DLB relay; PCB pattern damage; Bake or broil relay failure
How to Fix
- 1
Disconnect power and Assy Display PCB
- 2
Check DLB, Bake and Broil relay (normal: infinity ohms)
- 3
Measure oven sensor resistance (normal: 1080 ohms)
- 4
Check PCB pattern for damage
- 5
Replace Main PCB if relays are faulty
This Error Applies To
Samsung NE63CB831512 Series Ovens & Ranges (2023) (2023–present)
Related Error Codes
Short in the control key
Sub PCB sensor is open when operating
Main PCB sensor is open when operating
PCB temperature rises abnormally high
Sub PCB temperature rises abnormally high
Power cord is installed improperly
Communication error between Main and Touch is interrupted
Communication error between Main and Sub PBA is interrupted