Furnace Pilot Light Out? Solving Common Thermocouple Issues

When your furnace's pilot light goes out, it can lead to discomfort, especially during colder months. One of the primary culprits behind this issue is often a malfunctioning thermocouple. Understanding the role of the thermocouple in your HVAC system and recognizing common problems can help you address pilot light issues efficiently. In this article, we will explore the function of the thermocouple in a furnace, common issues that cause the pilot light to extinguish, and preventive measures to avoid future problems. Understanding the Role of the Thermocouple in a Furnace The thermocouple is a vital safety device in gas-powered furnaces, controlling the gas flow to the burner. It ensures that gas only flows when the pilot light is on, preventing the accumulation of unburned gas, which could lead to leaks or explosions. This thermocouple consists of two different metals welded together, forming a junction that generates a small electrical current when heated by the pilot light. As ...