Display shows “HERR” or high temperature error; grill overshoots set temperature and then shuts down.

Safety first: If you suspect a grease fire, keep the lid closed, turn the grill OFF, and unplug it. Do NOT use water on a grease fire.

• Allow full cool-down: Wait until the grill is completely cool before opening and inspecting.
• Inspect for grease buildup: Remove grates and drip tray. Clean out any heavy grease deposits, especially near the firepot and drip channels.
• Check auger operation: During a test run, observe whether the auger stops feeding when the set temperature is reached. If it continues feeding excessively, the controller or auger relay may be faulty.
• Verify temperature probe: Inspect and clean the RTD probe. Replace if readings are obviously inaccurate compared to a known-good thermometer.
• Replace controller if needed: If the auger runs continuously regardless of temperature, replace the main control board.