On the covered Samsung range or oven, C-31 means the electronic control is too hot. First, turn off heat and restore required ventilation. Then: arrange cooling/control service if it returns. Check that nothing blocks the vents around the oven and the cooling-fan area before you restart it.
Try in this order
0 of 4 completedWhat to do first
ReversibleTurn off heat and restore required ventilation.
Correct only the documented fault domain
ReversibleArrange cooling/control service if it returns.
Check the heat around the board
ReversibleC-31 is the over-temperature side of the board sensor: the area around the main board is too hot. Clear anything blocking the range's vents and let it cool.
Test the cooling fan
ReversibleListen for the cooling fan when the oven runs. A fan that does not turn lets the board overheat.
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Exact questions
Common questions about “Samsung range or oven code C-31”
What does C-31 mean on a Samsung range or oven?+
The electronic control is too hot.
What is the difference between C-30 and C-31 on a Samsung range?+
C-30 reports the board sensor open; C-31 reports the board running too hot. Both are about the control board area.
Can cooking on the back burners cause C-31?+
Yes. Large pots on back burners at high heat for a long time can heat the area around the control board enough to trigger it, as repair guides describe.
Do I need to replace the control board for C-31?+
Only if the code returns when the range and the room are cool, since heat from cooking is the commoner cause.