Step-by-Step Pilot Light Repair Guide

When a pilot light goes out, it can disrupt your home's heating or hot water system. Knowing how to troubleshoot and fix this issue can save time and prevent further damage. This guide will walk you through the steps to identify common problems and perform basic repairs safely and effectively.

Understanding Pilot Light Troubleshooting

A pilot light is a small flame that ignites the gas in appliances like water heaters, furnaces, and boilers. If it goes out, the appliance won’t work properly. Troubleshooting involves checking several components to find the cause.

Start by ensuring the gas supply is on. Sometimes, the pilot light goes out simply because the gas valve is closed. Next, inspect the pilot light itself. If it won’t stay lit, the thermocouple might be faulty or dirty. The thermocouple is a safety device that senses the flame and keeps the gas valve open.

Other common issues include a clogged pilot orifice or a draft blowing out the flame. Cleaning the pilot assembly and shielding it from drafts can often resolve these problems.

Pilot light assembly close-up

Close-up view of a pilot light assembly on a gas appliance

How to Safely Relight a Pilot Light

Before attempting to relight a pilot light, always turn off the gas supply and wait at least five minutes to allow any residual gas to clear. This precaution reduces the risk of fire or explosion.

Here’s a simple step-by-step process:

1. Turn the gas control knob to the "off" position.

2. Wait five minutes.

3. Turn the knob to "pilot."

4. Press and hold the knob down to allow gas to flow.

5. Use a long lighter or match to ignite the pilot light.

6. Continue holding the knob for 30 to 60 seconds after the flame is lit.

7. Release the knob and ensure the pilot stays lit.

8. Turn the knob to the "on" position.

   
   

If the pilot light does not stay lit, the thermocouple or gas valve may need inspection or replacement.

Relighting a pilot light safely

Eye-level view of a person lighting a pilot light with a long lighter

Can I Replace a Thermocouple Myself?

Replacing a thermocouple is a common repair that many homeowners can handle with basic tools and safety precautions. The thermocouple is a small metal rod located near the pilot light. It detects the flame and signals the gas valve to stay open.

To replace it:

1. Turn off the gas supply.

2. Remove the access panel to the pilot assembly.

3. Locate the thermocouple and disconnect it from the gas valve.

4. Unscrew the thermocouple from its mounting bracket.

5. Install the new thermocouple by reversing the removal steps.

6. Turn the gas back on and relight the pilot light.

   
   

Make sure the new thermocouple is the correct size and type for your appliance. If you are unsure, consult the appliance manual or a professional.

Thermocouple replacement close-up

Close-up view of a thermocouple being replaced on a gas appliance

When to Call a Professional for Pilot Light Repair

While many pilot light issues can be fixed at home, some situations require professional help. If you smell gas, do not attempt any repairs. Leave the area immediately and contact your gas company or emergency services.

Other signs that you should call a professional include:

• Persistent pilot light outages despite relighting attempts.

• A pilot light that burns yellow or irregularly, indicating incomplete combustion.

• Difficulty accessing the pilot assembly or gas valve.

• Problems with the gas supply or pressure.

  
  

For reliable and prompt service, consider contacting a trusted provider specializing in home repairs. For example, Greenscape Ecochic offers expert pilot light repair and emergency services in the Ozark, Enterprise, and Dothan areas.

Maintaining Your Pilot Light for Long-Term Reliability

Regular maintenance can prevent pilot light problems and extend the life of your appliance. Here are some tips:

• Inspect the pilot light and thermocouple annually.

• Clean the pilot orifice with compressed air or a soft brush to remove dust and debris.

• Check for drafts near the appliance and seal any gaps.

• Schedule professional inspections and tune-ups before the heating season.

  
  

By staying proactive, you reduce the risk of unexpected outages and costly repairs.

This guide provides clear, practical steps to troubleshoot and repair your pilot light safely. Taking these actions can restore your appliance’s function quickly and keep your home comfortable. If you encounter any difficulties or safety concerns, do not hesitate to seek professional assistance.