It can be frustrating when your gas fireplace pilot light goes out shortly after the main burner ignites. This issue not only impacts your comfort but also raises concerns about safety. Here’s a closer look at the possible causes and solutions when your pilot light goes out once the main burner is ignited.

Possible Causes:

• Thermocouple Issues: The thermocouple is a safety device that senses whether the pilot light is burning. If it malfunctions or isn’t positioned correctly, it might shut off the gas supply to the pilot light, causing it to go out.
• Improper Venting: Inadequate or blocked venting can lead to improper combustion, which can extinguish the pilot light when the main burner kicks in.
• Faulty Gas Valve: A malfunctioning gas valve might not provide a steady supply of gas to both the pilot light and the main burner, causing the pilot to extinguish.

Solutions:

• Check the Thermocouple: Ensure the thermocouple is properly positioned and that it’s in good condition. Clean it gently with a soft brush to remove any dirt or debris that may be affecting its performance. If it’s damaged or doesn’t function correctly, consider replacing it.
• Inspect the Venting System: Make sure your fireplace’s venting system is clear of any obstructions. Blocked vents can disrupt the proper flow of air and combustion gases, leading to pilot light issues. If you find any blockages or debris, remove them carefully.
• Gas Valve Inspection: A faulty gas valve can be a more complex issue and should be inspected by a qualified technician. They can assess the gas valve’s performance, ensuring it provides a consistent gas supply to both the pilot light and the main burner.
• Professional Service: If troubleshooting these common causes doesn’t resolve the issue, it’s advisable to seek the assistance of a professional technician who specializes in gas fireplace repairs. They can perform a thorough inspection, identify the root cause, and make the necessary repairs or replacements.
• Regular Maintenance: To prevent future occurrences of the pilot light going out, schedule regular maintenance for your gas fireplace. Professional maintenance can catch and address potential issues before they become significant problems.

Remember that gas-related issues require careful attention due to safety concerns. If you smell gas or suspect a gas leak at any point during troubleshooting, immediately turn off the gas supply, open windows for ventilation, and contact a qualified technician or your local gas utility company for assistance. Safety should always be the top priority when dealing with gas appliances.