Samsung Range Error Code OT

The OT error code on a Samsung range stands for Over Temperature and is triggered when the top sensor detects an abnormally high temperature reading. This sensor monitors the cooktop surface or the area directly beneath it to protect components from heat damage. When the temperature climbs beyond the acceptable threshold, the control system throws the OT code and may shut down the affected zone to prevent further overheating. The top sensor is a thermistor-type component, meaning its resistance changes predictably with temperature, and the control board uses those resistance values to calculate the actual surface temperature.

The most common cause of the OT error is improper cookware. Oversized pans, thin-bottomed pots, or cookware that traps heat can cause localized overheating directly above the sensor. Samsung specifies cookware that matches the burner zone size to ensure even heat distribution. Using a pan that is too small, too large, or poorly constructed can concentrate heat in ways that push the sensor reading well above normal operating limits.

If cookware is confirmed to be appropriate and the error persists, the next step is to measure the resistance of the top sensor and compare it against the published resistance-temperature chart. A sensor reading outside the specified range at a given temperature indicates a failed thermistor that must be replaced. If the sensor resistance matches the chart and wiring connections are intact with no visible damage or loose terminals, the fault lies in the Touch PCB assembly, which processes the sensor signal and must be replaced to resolve the code.