Relighting the Pilot Light on a Furnace: A Step-by-Step Guide
What is the Pilot Light?
Before we dive into the steps to relight the pilot light on a furnace, it’s essential to understand what the pilot light is. The pilot light is a small flame that burns continuously in the furnace’s pilot assembly. Its primary function is to ignite the burner when the thermostat calls for heat. The pilot light is usually located at the base of the furnace or near the burner assembly.
Why is it Important to Relight the Pilot Light?
If your pilot light goes out, it can cause the following issues:
- No heat: Without a functioning pilot light, the furnace will not produce heat, leaving your home cold and uncomfortable.
- Carbon monoxide buildup: A malfunctioning pilot light can lead to a buildup of carbon monoxide in your home, which can be hazardous to your health.
- Reduced efficiency: A faulty pilot light can cause the furnace to work harder, increasing your energy bills and reducing the overall efficiency of the unit.
How to Relight the Pilot Light on a Furnace
Relighting the pilot light is a relatively simple process. Here’s a step-by-step guide to help you do it safely and efficiently:
Step 1: Turn Off the Main Gas Supply
- Before attempting to relight the pilot light, ensure the main gas supply to the furnace is turned off.
- Locate the gas shut-off valve and turn it clockwise until it stops. This will prevent any gas from flowing to the furnace.
Step 2: Clear the Area Around the Furnace
- Clear the area around the furnace of any flammable materials, such as papers, curtains, or combustible liquids.
- Move any furniture or obstacles away from the furnace to create a safe working distance.
Step 3: Remove the Pilot Light Filter (If Applicable)
- Some furnaces have a pilot light filter that needs to be removed before relighting the pilot light.
- Check your furnace’s manual or look for a filter cap near the pilot light assembly.
Step 4: Press the Pilot Light Button
- Locate the pilot light button, usually labeled "Pilot" or "Ignite."
- Press and hold the button for 20-30 seconds, until you hear a click. This will allow gas to flow to the pilot light.
Step 5: Light the Pilot Light
- Use a lighter or matches to light the pilot light. Make sure to hold the flame to the pilot light tip for 1-2 seconds, until it ignites.
- Release the pilot light button while continuing to hold the flame.
- Check to ensure the pilot light is lit and burning steadily. If it’s not lit, repeat the process until it ignites.
Step 6: Replace the Pilot Light Filter (If Applicable)
- If you removed the pilot light filter, replace it now.
Step 7: Turn On the Main Gas Supply
- Turn the gas shut-off valve counterclockwise until it stops, allowing gas to flow to the furnace.
- Check for any gas leaks by smelling for the distinctive "rotten egg" smell of natural gas or using a gas leak detector.
Troubleshooting Common Issues
If you encounter any of the following issues while attempting to relight the pilot light, refer to the following troubleshooting tips:
- Pilot light won’t stay lit: Check for proper gas flow, make sure the pilot light orifice is clean, or replace the pilot light filter.
- Pilot light is too low or too high: Adjust the pilot light orifice to the recommended setting or clean the orifice.
- Pilot light doesn’t ignite: Check the gas supply, pilot light filter, or pilot light assembly for blockages or damage.
Prevention is Key
To minimize the need to relight the pilot light, it’s essential to:
- Regularly inspect and clean the pilot light and orifice to prevent blockages.
- Check and replace the pilot light filter as recommended by the manufacturer.
- Ensure proper maintenance of the furnace, including cleaning the burner and flue.
Conclusion
Relighting the pilot light on a furnace is a relatively simple process, but it’s crucial to ensure it’s done safely and efficiently. By following these steps and troubleshooting common issues, you’ll be able to relight your pilot light and keep your home warm and comfortable throughout the year.
Important Reminders
- Always follow the manufacturer’s instructions and guidelines for relighting the pilot light.
- Be cautious when working with gas appliances, as they can be hazardous if not properly maintained.
- Consider consulting a professional if you’re unsure or uncomfortable relighting the pilot light yourself.
