Display shows Er2 and grill will not start or shuts down shortly after startup.

Safety first: Disconnect power before inspecting wiring or the controller.

• Step 1 – Inspect RTD cable and probe: Look for melted insulation where the RTD cable passes near the firepot or exhaust. If copper conductors are exposed or touching metal, the probe is shorted and must be replaced.
• Step 2 – Check connector for moisture: Remove the controller and unplug the RTD connector. Look for condensation, grease, or corrosion. Dry the connector thoroughly and clean with electrical contact cleaner.
• Step 3 – Test resistance: With RTD disconnected, measure resistance across the two RTD leads. A reading near 0 Ω indicates a shorted probe. Replace the RTD temperature probe.
• Step 4 – Inspect control board: If a new RTD still gives Er2, the temperature input circuit on the main control board is likely damaged and the board should be replaced.