Smoker overheats beyond set temperature; food burns even at low settings.

Safety first: Unplug the smoker immediately if it overheats. Do not leave it unattended until the issue is resolved.

Steps:

• Inspect the temperature sensor for damage or loose mounting; replace if physically damaged.
• Test the sensor resistance at room temperature and at a known elevated temperature (e.g., in warm water) to ensure it changes smoothly. Replace if readings are erratic.
• Locate the high-limit thermostat and test for proper operation; if it never opens even at high temperatures, replace it.
• If the heater remains energized even when the smoker is off, the heater relay on the control board may be welded closed and the board must be replaced.