If your furnace won't go on, it might be because the pilot light is out. Here's how you can fix repeat pilot light problems to keep your furnace working.

Gas Supply Inspection

When your furnace's pilot light goes out, it could be due to a problem with the gas supply. A heating contractor will inspect the gas supply system to identify any issues. This includes checking the gas valve that supplies the furnace.

If the valve is closed or faulty, it can prevent the flow of gas and cause the pilot light to go out. A heating contractor will ensure that the gas valve is open and functioning correctly. If necessary, they will safely open the valve or recommend repairs or replacements to restore the gas supply and relight the pilot light.

Thermocouple Evaluation

The thermocouple is a safety device that detects the presence of the pilot flame. If the thermocouple is malfunctioning or positioned incorrectly within the flame, it can cause the pilot light to go out. A heating contractor will carefully examine the thermocouple to determine if it is functioning properly.

They will verify its positioning within the flame and inspect it for any signs of damage or wear. If the thermocouple is found to be faulty, the heating contractor will replace it with a new, compatible one. This ensures that the thermocouple accurately detects the flame and allows the pilot light to stay lit.

Professional Cleaning

A dirty or obstructed pilot orifice can disrupt the flow of gas to the pilot light, causing it to go out. Heating contractors have the expertise to perform thorough cleanings to address this issue.

They will follow manufacturer guidelines and use appropriate tools to carefully clean the pilot orifice. By removing any dirt, debris, or obstructions, the heating contractor ensures that the gas flows smoothly and consistently, allowing the pilot light to remain lit.

Draft and Airflow Assessment

Drafts and improper airflow around the furnace can extinguish the pilot light. A heating contractor will assess the furnace's surroundings to identify any drafts or airflow issues. They will carefully inspect the area for potential obstructions and ensure proper sealing of doors, windows, and vents.

If drafts are impacting the pilot light, the heating contractor will recommend measures to minimize their impact. This may involve installing draft hoods or vent caps to maintain a steady flame and prevent the pilot light from going out. 

For more info, contact a local heating contractor