Display shows Er3 and grill shuts down shortly after startup

Safety first: Turn the grill off, unplug it, and keep the lid closed if there is an active flare-up. Have a fire extinguisher rated for grease fires nearby. Do not use water on a grease fire.

• Check for grease fire: Once safe and cooled, open the lid and inspect for signs of a grease fire (heavy soot, charred grease, warped components). Clean out all grease and ash from the cook box, drip tray, and grease channels.
• Inspect pellet feed: Ensure the auger is not overfeeding pellets. Verify that the firepot is not overflowing with unburned pellets. Remove excess pellets and ash.
• Verify RTD placement: Confirm the RTD probe is properly mounted and not touching the grate or directly above the firepot, which can cause artificially high readings.
• Clean RTD: Gently clean the RTD probe of heavy carbon buildup, which can affect readings.
• Restart on low setting: After cleaning, restart the grill on a low temperature setting and monitor. If Er3 recurs without obvious overheating, the RTD or control board may be faulty and should be tested or replaced.