Samsung Range Error Code C-30

C-30 indicates that the main PCB temperature sensor is either open or shorted while the oven is operating. This sensor monitors the temperature of the range's control board electronics. The fault means the board cannot get a valid reading from that sensor, which prevents normal operation. Samsung directs users to contact a service technician for this code.

Power cycling the range by unplugging it or turning off the circuit breaker for a few minutes may temporarily clear the code, but it will almost certainly return if the underlying sensor circuit fault is still present. A reset does not repair an open or shorted sensor circuit. The error will need to be diagnosed and the faulty component repaired or replaced.

Repair costs vary depending on the root cause. If the issue is a wiring harness or sensor replacement, parts and labor typically range from around $100 to $250. If the main PCB itself needs to be replaced, costs can range from $200 to $450 or more, depending on the specific model and local labor rates. A service technician will need to diagnose the fault before an accurate estimate can be provided.

Samsung's guidance for C-30 is to call for professional service rather than attempt a DIY repair. The fault involves the main PCB and its sensor circuit, which requires component-level diagnostic testing to identify whether the problem is in the wiring, the sensor, or the board itself. Attempting repairs without the proper tools and knowledge risks further damage to the control board.

It is not recommended to continue operating the range with an active C-30 error. This fault means the control board cannot monitor its own temperature, which removes a key protection designed to prevent the electronics from overheating. Continued use could risk damage to the main PCB or create a broader electrical fault. The range should be taken out of service until the issue is resolved.