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

1. undefined: Disconnect power and measure oven sensor resistance (1080Ω at room temperature) 2. undefined: Check broil, bake, and convection heater resistances 3. undefined: Check DLB, Broil, Bake and Convection heater relay operation (Normal: ∞Ω) 4. undefined: Check for harness disconnection at main PCB 5. undefined: Measure oven sensor connector resistance (Normal: 2850Ω) 6. undefined: Replace oven sensor if defective 7. undefined: Replace main PCB if problem persists

Samsung Ovens & Ranges

Error Code C-21

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

Oven heating over temperature Internal temperature rises abnormally high; Defective temperature sensor; Heater relay stuck on; Damaged PCB pattern

Oven heating over temperature

Moderate

Address soon - your appliance may not work properly

What This Means

Internal temperature rises abnormally high; Defective temperature sensor; Heater relay stuck on; Damaged PCB pattern

How to Fix

1
Disconnect power and measure oven sensor resistance (1080Ω at room temperature)
2
Check broil, bake, and convection heater resistances
3
Check DLB, Broil, Bake and Convection heater relay operation (Normal: ∞Ω)
4
Check for harness disconnection at main PCB
5
Measure oven sensor connector resistance (Normal: 2850Ω)
6
Replace oven sensor if defective
7
Replace main PCB if problem persists