How to Check a Pilot Light on a Furnace?
A pilot light is a small flame that ignites the main burner in a furnace, providing heat to your home during the cold winter months. However, if the pilot light goes out, the furnace will not function properly, leaving you without heat. In this article, we will guide you on how to check a pilot light on a furnace, step by step.
What is a Pilot Light?
Before we dive into the process of checking a pilot light, it’s essential to understand what it is and its function. A pilot light is a small flame that is ignited by a spark or a battery-powered igniter. It is usually located at the base of the furnace and is responsible for igniting the main burner, which then produces heat.
Why is it Important to Check the Pilot Light?
Regularly checking the pilot light is crucial to ensure your furnace is functioning correctly and safely. A faulty pilot light can lead to:
• Inadequate heating: If the pilot light is not working, the furnace will not produce enough heat to warm your home.
• Increased energy bills: A faulty pilot light can cause the furnace to work harder, leading to increased energy bills.
• Carbon monoxide poisoning: A faulty pilot light can lead to the production of carbon monoxide, a colorless and odorless gas that can be deadly.
How to Check a Pilot Light on a Furnace
Checking a pilot light on a furnace is a relatively simple process. Here’s a step-by-step guide:
Step 1: Turn Off the Power
Before you start checking the pilot light, make sure to turn off the power to the furnace at the circuit breaker or fuse box. This is an essential safety precaution to avoid any accidents or electrical shocks.
Step 2: Locate the Pilot Light
Find the pilot light assembly, which is usually located at the base of the furnace. It may be covered with a glass cover or a metal shield.
Step 3: Remove the Cover
Remove the cover or shield to access the pilot light. You may need to use a screwdriver or a wrench to remove it.
Step 4: Check the Pilot Light
Look for the pilot light and check if it is lit. If it is not lit, you may need to relight it. If it is lit, check the flame size and color. The pilot light should be a steady, blue flame.
Step 5: Check the Pilot Light Orifice
The pilot light orifice is the small opening where the pilot light gas flows. Check if it is clogged or dirty. If it is, clean it with a soft brush or a cloth.
Step 6: Check the Pilot Light Tube
The pilot light tube is the metal tube that carries the pilot light flame to the main burner. Check if it is damaged or clogged. If it is, replace it with a new one.
Step 7: Relight the Pilot Light (If Necessary)
If the pilot light is not lit, you may need to relight it. To do this:
• Turn the gas valve to the "pilot" position: Locate the gas valve and turn it to the "pilot" position.
• Press the pilot button: Press the pilot button to release the gas and ignite the pilot light.
• Hold the pilot button down for 1-2 minutes: Hold the pilot button down for 1-2 minutes to ensure the pilot light is lit and stable.
• Release the pilot button: Release the pilot button and turn the gas valve to the "on" position.
Additional Tips and Precautions
• Always turn off the power to the furnace before attempting to check or relight the pilot light: This is an essential safety precaution to avoid any accidents or electrical shocks.
• Use a flashlight to inspect the pilot light area: The area around the pilot light can be dark, so it’s essential to use a flashlight to inspect it.
• Avoid touching any electrical components: Electrical components, such as wires and terminals, can be dangerous to touch. Avoid touching them to prevent electrical shocks.
Conclusion
Checking a pilot light on a furnace is a relatively simple process that can help ensure your furnace is functioning correctly and safely. By following the steps outlined in this article, you can check the pilot light and ensure your furnace is ready to provide heat during the cold winter months.
Table: Pilot Light Maintenance Schedule
Maintenance Task | Frequency |
---|---|
Check pilot light | Monthly |
Clean pilot light orifice | Quarterly |
Check pilot light tube | Annually |
Relight pilot light | As needed |
Additional Resources
For more information on how to check and maintain your furnace pilot light, consult your furnace’s user manual or contact a professional HVAC technician.