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

1. undefined: Disconnect power and open back cover 2. undefined: Disconnect sensor from wire harness 3. undefined: Measure sensor resistance at current temperature (should be 2500-3600 ohms) 4. undefined: Check broil, bake, and convection heater resistance (Broil 24-26 ohms, Bake 23-25 ohms, Convection 12-14 ohms) 5. undefined: Verify DLB relay, Broil, Bake, and Convection heater relays are working normally 6. undefined: Check wiring connections on main PCB 7. undefined: Verify oven sensor connector resistance on Main PCB

Samsung Ovens & Ranges

Error Code C-21

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

Oven heating over Temperature sensor malfunction causing incorrect readings; Broil, bake, or convection heater not shutting off properly; Relay malfunction preventing heater shutdown; Main PCB communication issue with sensors

Oven heating over

Moderate

Address soon - your appliance may not work properly

What This Means

Temperature sensor malfunction causing incorrect readings; Broil, bake, or convection heater not shutting off properly; Relay malfunction preventing heater shutdown; Main PCB communication issue with sensors

How to Fix

1
Disconnect power and open back cover
2
Disconnect sensor from wire harness
3
Measure sensor resistance at current temperature (should be 2500-3600 ohms)
4
Check broil, bake, and convection heater resistance (Broil 24-26 ohms, Bake 23-25 ohms, Convection 12-14 ohms)
5
Verify DLB relay, Broil, Bake, and Convection heater relays are working normally
6
Check wiring connections on main PCB
7
Verify oven sensor connector resistance on Main PCB