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How to restart a pilot light on furnace?

How to Restart a Pilot Light on Furnace: A Step-by-Step Guide

As the temperatures drop during the winter months, your furnace becomes an essential part of your home’s heating system. However, when the pilot light on your furnace goes out, it can be frustrating and uncomfortable. In this article, we will provide a step-by-step guide on how to restart a pilot light on your furnace.

Why is the Pilot Light Important?

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Before we dive into the steps to restart the pilot light, it’s essential to understand its importance. The pilot light is a small flame that ignites the main burner in your furnace, providing heat to your home. Without a pilot light, your furnace won’t be able to produce heat, leaving you feeling cold and uncomfortable.

Why Does the Pilot Light Go Out?

There are several reasons why the pilot light on your furnace might go out, including:

Dirty or clogged burner: If the burner is dirty or clogged, it can prevent the pilot light from igniting.
Incorrect gas pressure: If the gas pressure is too low or too high, it can affect the pilot light’s ability to stay lit.
Faulty thermocouple: The thermocouple is responsible for sensing the pilot light’s flame and shutting off the gas supply when it’s not lit. If it’s faulty, the pilot light might not stay lit.
Pilot light adjustment: If the pilot light is not adjusted correctly, it can cause it to go out.

How to Restart a Pilot Light on Furnace: A Step-by-Step Guide

Restarting a pilot light on your furnace is a relatively simple process. Here’s a step-by-step guide to help you do it safely and effectively:

Step 1: Turn Off the Gas Supply

Before attempting to restart the pilot light, turn off the gas supply to the furnace. You can do this by locating the gas shut-off valve and turning it clockwise until it stops. This will prevent any accidental gas leaks or explosions.

Step 2: Open the Access Panel

Locate the access panel on your furnace and remove the screws or clips that hold it in place. This will give you access to the pilot light assembly.

Step 3: Remove the Pilot Light Assembly

Gently pull out the pilot light assembly from the furnace. This may require some force, so be careful not to damage any of the surrounding components.

Step 4: Clean the Pilot Light Assembly

Use a soft brush or cloth to clean the pilot light assembly, paying particular attention to the burner and igniter. Remove any debris, dust, or dirt that may be blocking the pilot light’s ability to ignite.

Step 5: Check the Thermocouple

Check the thermocouple for any signs of damage or wear. If it’s damaged, you may need to replace it. Make sure it’s securely attached to the pilot light assembly.

Step 6: Adjust the Pilot Light

Adjust the pilot light to ensure it’s at the correct height and distance from the burner. Refer to your furnace’s user manual for specific instructions on how to adjust the pilot light.

Step 7: Turn On the Gas Supply

Once you’ve adjusted the pilot light, turn on the gas supply to the furnace. You can do this by locating the gas shut-off valve and turning it counterclockwise until it stops.

Step 8: Light the Pilot Light

Use a long match or lighter to light the pilot light. Hold the flame to the pilot light until it ignites, then release the flame. You should hear the pilot light click on and see a small flame.

Step 9: Check the Pilot Light

Check the pilot light to ensure it’s burning steadily and consistently. If it’s not, you may need to adjust the pilot light or check for any issues with the thermocouple.

Tips and Precautions

Be careful when working with gas: Gas can be hazardous if not handled properly. Make sure you turn off the gas supply before attempting to restart the pilot light.
Use a long match or lighter: This will help you keep a safe distance from the pilot light and prevent any accidental burns.
Check your furnace’s user manual: Refer to your furnace’s user manual for specific instructions on how to restart the pilot light on your particular model.
Call a professional if necessary: If you’re not comfortable restarting the pilot light yourself, it’s always best to call a professional HVAC technician.

Conclusion

Restarting a pilot light on your furnace is a relatively simple process that requires some basic knowledge and caution. By following the steps outlined in this article, you should be able to restart your pilot light and get your furnace working again. Remember to always turn off the gas supply before attempting to restart the pilot light, and be careful when working with gas. If you’re not comfortable restarting the pilot light yourself, it’s always best to call a professional HVAC technician.

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