Display shows H1 and temperature reading is extremely high or unstable.

Safety first: Allow the grill to cool completely and unplug it before inspecting the probe or internal wiring.

• Step 1 – Verify baffles and shields: Ensure the heat baffle and drip tray are correctly installed so that the RTD probe is shielded from direct flame.
• Step 2 – Inspect RTD mounting: Confirm the probe is firmly mounted to the side wall and not bent into contact with the firebox or flame path.
• Step 3 – Check cable routing: Follow the RTD cable and look for melted insulation or spots where the cable touches the barrel or exhaust. Reroute and secure the cable away from hot surfaces.
• Step 4 – Electrical test: With the grill unplugged, disconnect the RTD from the control board and measure resistance. If the reading is near 0 Ω or fluctuates wildly when you gently move the cable, the probe is shorted and must be replaced.
• Step 5 – Replace RTD or board: Install a new RTD probe if the old one is faulty. If H1 persists with a new probe and correct installation, the control board temperature circuit may be defective and require replacement.