Four Reasons Why Your Pilot Light Keeps Going Out in Richmond Hill, GA

Few things are more frustrating than sudden heat malfunctions on a chilly Richmond Hill winter night. There may be a few reasons why your pilot light keeps going out. You’ll need a professional HVAC technician to inspect the issue and repair any faulty components.  

Luckily, Georgia Air Conditioning & Heating Repair offers reliable furnace repair in Richmond Hill, GA. Our expert team will restore heat to your home or advise you on a replacement if the unit is beyond repair. 

What Purpose Does the Pilot Light Serve? 

It’s helpful to understand the basics of how furnaces work to understand why key issues occur. The pilot light is a small flame within the combustion chamber that lights a steady stream of gas, heating the burners. 

If your pilot light keeps going out, the system won’t produce heat. You may still hear the furnace start up and attempt to begin a heating cycle, but it will usually shut off automatically if no light is detected. This pattern will repeat a few times before the system locks you out. 

Why Your Pilot Light Keeps Going Out in Richmond Hill, GA 

There are many reasons a pilot light keeps going out, but most relate to faulty components or poor airflow. The four most common issues are: 

1. Thermocouple Malfunction 

The thermocouple senses whether the pilot light is lit by detecting heat. If it can’t detect heat, it automatically closes the gas valve to prevent leaks.  

Sometimes, damage or a buildup of grime on the component prevents it from reliably detecting the flame. In this case, the gas will shut off even if a flame is present, and the pilot light will then automatically go out.  

A professional will examine the thermocouple for dirt or damage and clean, repair, or replace it.  

2. Faulty Gas Valve 

The main gas valve opens and closes when the pilot light is lit to start the combustion process. If worn out or damaged, this component will limit the gas flow and trigger an automatic shut-off. 

A certified HVAC technician will determine whether the valve or the gas line is at fault. If the valve is damaged and malfunctioning, they will replace it. They will also address any clogs or damage within the gas line.  

If the problem is within the gas line and not the valve, you may experience a gas leak. If you smell gas or hear hissing sounds near the furnace, shut down the system and call for emergency plumbing assistance immediately.  

3. Pilot Tube Blockage 

Sometimes, if your pilot light keeps going out, the pilot tube is to blame. If the tube is dirty, it will extinguish the flame over time by restricting the gas flow. You’ll need to clean it thoroughly to get the flame going again.  

These blockages occur because of soot and dirt buildup, so it’s important to clean the tube regularly and keep up with air filter cleanings.  

A professional must replace damaged tubes with a safe and functional alternative.  

4. Air Gets Into the Gas Line 

Rarely will air enter the main gas line, preventing adequate gas flow or extinguishing the pilot light. This issue must be diagnosed by a professional through specialized tests. The gas line may have a leak that allows air in, requiring repair or replacement.  

The Key to Pilot Light Troubleshooting in Richmond Hill, GA 

Homeowners should contact a certified professional for help with pilot light diagnostics in Richmond Hill, GA. Many issues affecting this component are too complicated or dangerous to handle on your own. 

Sometimes, the issues are severe enough to warrant pilot light replacement. If it keeps going out and repair hasn’t worked, a professional will handle the replacement process.  

Preventative maintenance is essential to avoiding furnace issues. Expert HVAC teams offer seasonal maintenance inspections to clean and correct problem areas within your system before the damage is too significant.