Error Code C-21

Oven heating over - Temperature rising too fast or sensor shorted

What This Means

Oven sensor shorted; Defective heater relay; Heater continuously on; Damaged main PCB pattern

How to Fix

1. 1

   Disconnect power and open back cover

2. 2

   Disconnect sensor harness from control

3. 3

   Measure sensor resistance (should read 25-1000 ohms at room temp)

4. 4

   Check broil, bake, and convection heaters for resistance

5. 5

   Check if DLB of sub PCB, Broil, Bake and Convection heater relays working normally

6. 6

   Check for disconnection of harness linked with main PCB

7. 7

   Measure resistance of oven sensor connector on main PCB

8. 8

   Replace main PCB if relay damaged or pattern cracked