How to Light Pilot Light on Furnace: A Step-by-Step Guide
The pilot light is a crucial component of a furnace, responsible for igniting the main burner and providing heat to your home. However, if the pilot light goes out, it can leave you without heat and potentially cause damage to your furnace. In this article, we will provide a step-by-step guide on how to light the pilot light on your furnace.
Understanding the Pilot Light
Before we dive into the steps, it’s essential to understand the pilot light and its function. The pilot light is a small flame that is always burning, even when the furnace is not in use. Its primary purpose is to ignite the main burner when the furnace is turned on. The pilot light is usually located at the base of the furnace and is controlled by a thermocouple, which regulates the flow of gas to the pilot light.
Preparation is Key
Before attempting to light the pilot light, make sure you have the following:
- A flashlight or other reliable light source
- A screwdriver or other tool to adjust the pilot light adjustment screw
- A gas shut-off wrench (if your furnace has a shut-off valve)
- A gas supply valve (if your furnace has a separate gas supply valve)
Step-by-Step Instructions
Step 1: Turn Off the Gas Supply
Turn off the gas supply valve or the main gas shut-off valve to prevent any accidental ignition of the pilot light. If you’re unsure where the gas shut-off valve is located, consult your furnace’s manual or contact a professional.
Step 2: Remove the Pilot Light Cover
Remove the pilot light cover or access panel to expose the pilot light assembly. This may require a screwdriver or other tool. Be careful not to touch any of the electrical components or wiring.
Step 3: Light the Pilot Light
Hold a lit match or lighter near the pilot light orifice (the small hole where the pilot light flame emerges). Gently blow on the match or lighter to create a small flame. Place the flame at the pilot light orifice and hold it steady for about 10-15 seconds. The pilot light should start to ignite.
Step 4: Adjust the Pilot Light
Adjust the pilot light adjustment screw to ensure the pilot light is burning at the correct height. You may need to adjust the screw clockwise or counterclockwise to achieve the correct flame height.
Step 5: Check the Pilot Light
Check the pilot light to ensure it’s burning steadily and at the correct height. If the pilot light is not burning properly, repeat the process from Step 3.
Step 6: Turn On the Gas Supply
Turn on the gas supply valve or the main gas shut-off valve to allow gas to flow to the pilot light. You should hear a slight hissing sound as the gas flows.
Step 7: Test the Furnace
Turn on the furnace and check to ensure it’s working properly. You should feel warm air blowing from the vents.
Common Issues and Troubleshooting
- Pilot light won’t stay lit: Check the pilot light adjustment screw and ensure it’s adjusted correctly. Also, check for any gas leaks or blockages in the pilot light orifice.
- Pilot light is too high or too low: Adjust the pilot light adjustment screw to achieve the correct flame height.
- Pilot light is not igniting: Check the thermocouple for any blockages or damage. Also, ensure the pilot light orifice is clean and free of debris.
Safety Precautions
- Always turn off the gas supply before attempting to light the pilot light.
- Never attempt to light the pilot light with a flame source that’s too large or too small.
- Keep children and pets away from the furnace and pilot light area.
- Ensure proper ventilation in the area to prevent carbon monoxide buildup.
Conclusion
Lighting the pilot light on your furnace is a relatively simple process, but it’s essential to follow the proper steps to ensure your safety and the proper functioning of your furnace. By following the steps outlined in this article, you should be able to light the pilot light and get your furnace up and running in no time. Remember to always prioritize safety and take the necessary precautions when working with gas appliances.
Additional Tips and Resources
- Consult your furnace’s manual for specific instructions on lighting the pilot light.
- Contact a professional if you’re unsure or uncomfortable attempting to light the pilot light yourself.
- Regularly maintain your furnace to prevent issues with the pilot light and other components.
Pilot Light Lighting Checklist
| Step | Task | Notes |
|---|---|---|
| 1 | Turn off gas supply | Ensure valve is fully closed |
| 2 | Remove pilot light cover | Be careful not to touch electrical components |
| 3 | Light pilot light | Hold flame steady for 10-15 seconds |
| 4 | Adjust pilot light | Check flame height and adjust as needed |
| 5 | Check pilot light | Ensure steady flame and correct height |
| 6 | Turn on gas supply | Check for hissing sound and ensure proper flow |
| 7 | Test furnace | Check for proper heat output and air flow |
By following this checklist and the step-by-step instructions provided, you should be able to successfully light the pilot light on your furnace and keep your home warm and cozy all winter long.
