How to Light Pilot on Gas Furnace: A Step-by-Step Guide
Lighting the pilot on a gas furnace is a crucial step in getting your heating system up and running. If you’ve lost heat or are unsure how to relight your pilot, this article is here to guide you through the process.
Important Safety Precautions
Before we dive into the step-by-step guide, it’s essential to ensure your safety while working on your gas furnace. Follow these precautions:
- Ensure the furnace is turned off at the gas valve
- Make sure the exhaust vent is clear and unrestricted
- Wear protective eyewear and gloves
- Keep children and pets away from the furnace
Contents
**Step-by-Step Guide to Light Pilot on Gas Furnace**
Step 1: Locate the Pilot Light and Gas Valve
- Locate the pilot light and gas valve on your furnace
- Make sure the furnace is turned off at the gas valve
- Use a flashlight to illuminate the area if necessary
**Step 2: Remove the Flame Failure Shut-off Device**
- Locate the flame failure shut-off device (FFD) on your furnace
- Remove the FFD by pulling it out of its socket or sliding it off its retaining clip
**Step 3: Light the Pilot Light**
- Use a small, reliable light source such as a match, lighter, or electronic igniter
- Hold the flame source to the pilot orifice (the small opening where the pilot light typically resides)
- Continue holding the flame source to the pilot orifice for 30-60 seconds
**Step 4: Adjust the Pilot Light**
- Once the pilot light is lit, adjust the flame to the desired height
- Make sure the pilot light is a steady, blue flame, not a yellow or hissing flame
**Step 5: Replace the Flame Failure Shut-off Device**
- Reinsert the FFD back into its socket or secure it with its retaining clip
- Make sure the FFD is securely locked in place
**Step 6: Turn On the Gas Valve**
- Turn the gas valve to the "On" position
- Ensure the furnace is still lit and the pilot light remains steady
Troubleshooting Tips
- Pilot light won’t stay lit: Check for proper gas valve operation and ensure the FFD is securely locked in place. Also, check for correct pilot light height and fuel supply.
- No gas supply: Check the gas valve and ensure it’s turned to the "On" position. Check for leaks in the fuel line and ensure the correct gas pressure.
When to Call a Professional
- If you’re unable to light the pilot or suspect a gas leak, call a professional HVAC technician immediately
- If the pilot light remains unsteady or flickers, consider calling a professional for inspection and repair
Summary
Lighting the pilot on a gas furnace can seem daunting, but with these step-by-step instructions, you’ll be up and running in no time. Remember to follow all safety precautions and troubleshoot any issues that arise. If you’re unsure about any part of the process, don’t hesitate to call a professional for assistance.
Additional Tips for Maintaining Your Gas Furnace
- Clean the furnace filter regularly
- Schedule annual inspections and maintenance with a licensed HVAC technician
- Keep the area around the furnace clear and well-ventilated
Safety Reminders
- Keep children and pets away from the furnace
- Turn off the furnace when it’s not in use to prevent accidental ignition
- Ensure proper ventilation to remove combustion byproducts
Table: Common Gas Furnace Issues and Solutions
| Issue | Solution |
|---|---|
| Pilot light won’t stay lit | Check FFD, gas valve operation, and pilot light height |
| No gas supply | Check gas valve position, fuel line leaks, and gas pressure |
| Unsteady pilot light | Check FFD, pilot light height, and gas supply |
By following this guide and remembering the troubleshooting tips, you’ll be well on your way to successfully lighting your pilot light and keeping your gas furnace running smoothly.
