Digital temperature display fluctuates wildly (e.g., jumps 50–100°F) without actual temperature change.

Safety first: Unplug the grill before handling wiring or the control panel.

Step-by-step checks:

• 1. Reseat RTD connector: Disconnect and reconnect the RTD probe plug at the control board several times to clean contacts.
• 2. Inspect cable: Look for cuts, kinks, or melted sections in the RTD cable and replace if damaged.
• 3. Dry control panel: If the grill was recently washed or rained on, allow the control panel area to dry completely before use.
• 4. Reduce interference: Move high-power devices (e.g., welders, compressors) away from the same circuit if possible.

When to call a technician: If erratic readings persist with a new probe and dry panel, the control board may be faulty.