Display shows L1 and grill will not heat above low temperatures

Safety first: Turn OFF and unplug the grill before accessing wiring.

• Verify probe mounting: Ensure the RTD probe is fully seated through the cook chamber wall and secured with its mounting screw. A loose probe can read ambient air instead of chamber temperature.
• Reseat connectors: At the control board, unplug and replug the RTD connector several times to clean the contacts.
• Inspect cable: Look for kinks, cuts, or pinch points along the RTD harness. Replace if damaged.
• Compare with external thermometer: During a test cook, compare the displayed temperature with a known good grill thermometer. If the display remains very low despite normal heat, replace the RTD probe first, then the control board if needed.