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Samsung NX58M9420SSOvens & Range

Error Code C-21

Oven heating over

Moderate

Address soon - your appliance may not work properly

What This Means

Defective oven sensor; Faulty broil, bake or convection heater; Faulty DLB or heater relays; Harness disconnection; PCB damage

How to Fix

  1. 1

    Measure oven sensor resistance (1080Ω at room temperature)

  2. 2

    Check broil, bake and convection heater resistance

  3. 3

    Test DLB of sub PCB and relay operation

  4. 4

    Check harness connections to main PCB

  5. 5

    Measure oven sensor connector resistance (normal 2850Ω)

Other Error Codes for NX58M9420SS

C-F2

Communication error between Sub PCB and touch control

C-d1

Door locking information error

C-20

Oven sensor shorted

C-F0

Communication error between Main and Sub PCB

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