Samsung NX58K9850S Series Service Manual page 71

4. Troubleshooting
Failure Display Codes
Safety error
Information code
C-21 Oven over heating
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Meaning
1 . Disconnect power . Open the back cover . Disconnect sensor
harness from the main PCB . Measure sensor resistance
:1080Ω at the room temperature → If there are any problems,
replace oven sensor
2 . Check the broil, bake and convection heater . Check the
resistance of the each heater .
3 . Check whether DLB of sub PCB, Broil, Bake and Convection
heater relay are working normally .
4 . Check whether there is any disconnection of harness which is
linked with main PCB on main PCB
5 . Check the resistance of oven sensor connector on main PCB .
(Normal : 2850Ω)
71
SOLUTION