Why Does My Furnace Pilot Light Keep Going Out?

One of the most common problems with heating systems is a pilot light that keeps going out. This can greatly inconvenience you during cold days as you will be forced to keep relighting the pilot. 

In this post, we’ve compiled some reasons why your pilot keeps going out to help you identify and resolve the issue.

A Malfunctioning Thermocouple

A broken thermocouple in your gas furnace could be the culprit behind a furnace pilot light that keeps going out. A thermocouple is a rod in your system that comes in contact with the flame. The device deactivates the gas once the pilot light goes off. If the thermocouple fails to detect the flame in your gas furnace, it will automatically shut off the gas valve to prevent gas leaks. Some of the issues that make the furnace light not stay lit include dirt buildup on the thermocouple and deformed thermocouples.

A Curved Thermocouple

The thermocouple plays a critical role in your heating system. Should it detect an unlit pilot light, it will automatically turn the gas off. If your thermocouple is dirty, it means the current it receives is obstructed and inadequate, leading to a gas outage. Besides the dirt buildup, the thermocouple could also be bent to a non-functional point. Should it bend too far from the pilot, the device will fail to detect heat and shut off the light.

A Dirty Pilot Tube

The other leading cause of this issue is a dirty flex and pilot tube. When the tubes get dirty, the flow of gas is blocked. The flex tubing is typically connected to the gas controller and plays a crucial role in ensuring a steady gas flow. Should it get dirty or blocked, it will fail to operate optimally and trigger system malfunctioning that causes the furnace pilot to go off.

What should you do with a furnace pilot light that keeps going out?

Should you encounter these problems in your system, call Air Specialties for a service appointment to ascertain the primary cause. 

Reliable Furnace Cleaning Services in New Haven, CT

At Air Specialties, we have been offering dependable furnace cleaning and furnace repair in and around New Haven, CT, for homes and businesses for the past several decades. Our team of technicians are continuously trained on the latest innovations and industry trends, and are ready to serve you at a moment’s notice! Contact us today to learn more about our furnace services!

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