What is a common sign of an improper gas mixture in an appliance?

A common sign of an improper gas mixture in an appliance is the presence of yellow or orange flames accompanied by soot. In gas appliances, an ideal combustion process produces a clean, blue flame, indicating that the gas is burning efficiently. However, when the gas mixture is incorrect, the combustion becomes incomplete, leading to the formation of yellow or orange flames. This occurs due to an excessive amount of fuel or insufficient air, which results in unburned carbon particles being released. The soot is a byproduct of this incomplete combustion, indicating poor air-to-fuel ratio and can pose safety and efficiency concerns. Recognizing these visual cues is essential for maintaining the safe and effective operation of gas appliances.