The thermometers built into the grill which is on the mounted to the top of the grill reads 100°F higher than a thermometer inside of the grill.
The thermometers built into the grill which is on the mounted to the top of the grill reads 100°F higher than a thermometer inside of the grill.
Most of the built-in thermostats on barbecue grills are garbage. Before speculating on what might be behind the temperature difference, get a thermometer that is accurate with two probes and measure again.