Smoker cycles on and off rapidly, causing large temperature swings.

Safety first: Unplug the smoker before adjusting sensor placement or wiring.

• Relocate sensor if possible: Ensure the temperature sensor is mounted in free air, not directly above or touching the heating element or metal wall.
• Secure sensor wiring: Tighten any loose connectors at the control board and ensure the cable is not moving or vibrating against hot surfaces.
• Stabilize power: Avoid sharing the circuit with large appliances that cycle on/off, which can cause voltage dips.
• Control board replacement: If temperature swings remain extreme despite a good sensor and stable power, the control algorithm on the board may be faulty; replace the main control board.