Can I Relight The Pilot Light By Myself

A pilot light is a small, continuous flame that ignites the main burner in many gas-powered appliances, including furnaces, water heaters, and some fireplaces. If your pilot light goes out, you might be wondering if you can relight it yourself. The answer is generally yes, but with a strong emphasis on safety and understanding the underlying reasons for the outage. This article provides a comprehensive guide to relighting a pilot light, covering safety precautions, step-by-step instructions, troubleshooting tips, and when to call a professional. We will explore the various types of pilot light systems found in residential and commercial settings.

Safety First: Essential Precautions Before Relighting

Before attempting to relight any pilot light, prioritizing safety is paramount. Gas leaks are potentially dangerous and can lead to explosions or carbon monoxide poisoning. Always adhere to the following precautions:

Smell Test: The most important step is to check for the smell of gas. If you detect even a faint odor of gas, DO NOT attempt to relight the pilot light. Immediately evacuate the building and contact your local gas company or fire department from a safe distance.
Ventilation: Ensure the area around the appliance is well-ventilated. Open windows and doors to dissipate any accumulated gas.
Turn Off the Gas Supply: Locate the gas shut-off valve for the appliance. This is typically a valve on the gas supply line leading directly to the furnace, water heater, or fireplace. Turn the valve to the "OFF" position. Let the gas dissipate for at least five minutes before proceeding.
Carbon Monoxide Detector: Verify that your carbon monoxide detectors are functioning properly. Test the detectors before and after relighting the pilot light. Change batteries if necessary.

Step-by-Step Guide to Relighting a Pilot Light

Once you've taken the necessary safety precautions, you can proceed with relighting the pilot light. The specific steps may vary slightly depending on the appliance, but the general process remains the same.

Identifying the Pilot Light Assembly

First, locate the pilot light assembly. This is usually found near the main burner and will have a small opening or viewport where you can see the pilot light flame. Refer to your appliance's user manual for the exact location.

Instructions for Newer Appliances (Electronic Ignition)

Many newer appliances feature electronic ignition. These units don't have a standing pilot light but instead use an igniter to light the burner each time there's a call for heat or hot water. If your unit uses electronic ignition, *do not* attempt to manually light anything. Instead:

Check Power Supply: Ensure the appliance is receiving power. Check the circuit breaker and any power switches.
Diagnostic Codes: Some models display error codes. Consult your manual to understand the code and how to troubleshoot it.
Restart the System: Try turning the appliance off and then back on. The electronic ignition should attempt to relight the burner.
Professional Help: If the system fails to ignite after several attempts, contact a qualified HVAC technician.

Relighting a Traditional Pilot Light

For appliances with a traditional pilot light, follow these steps:

Locate the Gas Control Valve: Find the gas control valve, typically located near the pilot light assembly. It will have settings like "ON," "OFF," and "PILOT."
Turn to "OFF": Turn the gas control valve to the "OFF" position and wait at least five minutes to allow any residual gas to dissipate.
Turn to "PILOT": After waiting, turn the gas control valve to the "PILOT" position.
Press and Hold the Reset Button: While holding the valve in the "PILOT" position, press and hold the reset button (usually red or black) on the gas control valve. This button allows gas to flow to the pilot light. You might need to hold the reset button for 20-30 seconds.
Ignite the Pilot Light: While still holding the reset button, use a long-handled lighter or match to ignite the pilot light. Carefully insert the flame source into the pilot light opening.
Observe the Flame: Continue holding the reset button for another 20-30 seconds after the pilot light ignites. This allows the thermocouple (a safety device) to heat up and keep the gas valve open.
Release the Reset Button: Slowly release the reset button. If the pilot light stays lit, you're successful! If the pilot light goes out, repeat steps 3-6. If it continues to go out after several attempts, there may be an underlying problem.
Turn to "ON": Once the pilot light is steadily burning, turn the gas control valve to the "ON" position.

Troubleshooting: Why Your Pilot Light Keeps Going Out

If your pilot light repeatedly goes out, it indicates a problem that needs to be addressed. Here are some common causes:

Dirty Pilot Light Orifice: The pilot light orifice is a small opening that allows gas to flow to the pilot light. If it becomes clogged with dust, debris, or corrosion, it can restrict gas flow and cause the pilot light to extinguish. A professional can clean or replace the orifice.
Faulty Thermocouple: The thermocouple is a safety device that senses the pilot light flame. When the flame is present, the thermocouple generates a small electrical current that keeps the gas valve open. If the thermocouple is faulty, it won't generate enough current, causing the gas valve to close and the pilot light to go out. A thermocouple is relatively inexpensive and easy to replace.
Drafts: Strong drafts can blow out the pilot light flame. Check for drafts near the appliance and seal any gaps or cracks.
Gas Supply Issues: Low gas pressure or a problem with the gas supply can also cause the pilot light to go out. Contact your gas company to investigate.
Blocked Venting: Proper venting is crucial for the safe operation of gas appliances. If the venting system is blocked, it can cause incomplete combustion and affect the pilot light.

When to Call a Professional HVAC Technician

While relighting a pilot light is often a straightforward task, there are situations where it's best to call a qualified HVAC technician.

Persistent Pilot Light Outages: If the pilot light continues to go out after multiple attempts, it indicates a more serious problem.
Gas Leaks: If you suspect a gas leak, evacuate the building immediately and contact your gas company or fire department. Do not attempt to relight the pilot light.
Unfamiliarity with the Appliance: If you're not comfortable working with gas appliances or unsure about the steps involved, it's best to leave it to a professional.
Complex Repairs: If you suspect a faulty thermocouple, gas valve, or other internal component, it's recommended to hire a technician.
Older Appliances: Older appliances may have safety features that are no longer up to code. A technician can assess the appliance and recommend necessary upgrades or replacements.

Cost Considerations

The cost of professional HVAC services can vary depending on the nature of the problem and your location. Relighting a pilot light itself may not cost much, but if there's an underlying issue, the cost can increase. Here's a general overview:

Pilot Light Relighting: $75 - $150 (if no other issues are found)
Thermocouple Replacement: $100 - $250 (including labor)
Gas Valve Replacement: $200 - $500 (including labor)
Diagnostic Fee: $75 - $150 (to identify the cause of the problem)

Preventative Maintenance

Regular preventative maintenance can help prevent pilot light problems and extend the lifespan of your gas appliances. Consider the following:

Annual Inspections: Schedule annual inspections with a qualified HVAC technician. They can inspect the pilot light assembly, clean the orifice, and check for any potential problems.
Cleanliness: Keep the area around the appliance clean and free of dust and debris.
Filter Changes: Change air filters regularly to ensure proper airflow. Restricted airflow can affect combustion and pilot light performance, especially in furnaces.
Carbon Monoxide Detectors: Regularly test and replace carbon monoxide detector batteries.

Conclusion

Relighting a pilot light is a task that many homeowners can safely perform themselves, provided they follow the necessary safety precautions and understand the procedure. However, it's essential to recognize when the problem is beyond your capabilities and to call a qualified HVAC technician. Regular maintenance and prompt attention to any issues can help ensure the safe and efficient operation of your gas appliances. Understanding the components like the *thermocouple*, *gas valve*, and *pilot orifice* is essential to diagnosing and resolving issues. If you detect even a whiff of gas, immediately contact your local gas provider. Prioritizing safety should always be the first step.