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4. Troubleshooting
Failure Display Codes
Information code
Meaning
Solution
C-21
Oven heating over
1 .
Disconnect power . Open the back cover . Disconnect
sensor harness from control .Measure sensor resistance
:1080Ω at the room temperature → if resistance is
abnormal, replace oven sensor .
2 .
Check the resistance of each broil, bake and convection
heater .
3 .
Check whether DLB, Broil, Bake and Convection heater
relay are working normally .
4 .
Make sure all connectors on Main PCB are plugged in
correctly .
5 .
Check the resistance of oven sensor connector on Main
PCB. (Normal : 2850Ω)
6 . Check whether divider switch is in OFF position with
divider inserted .
→ If divider switch is Off with divider inserted,
check whether divider switch connector harness is
connected correctly .