How to Turn On Pilot Light on Gas Furnace?
The pilot light on a gas furnace is a small flame that ignites the main burners to heat your home. If the pilot light goes out, your furnace will not work, leaving you without heat during the cold winter months. Turning on the pilot light on a gas furnace is a relatively simple process, but it may require some patience and caution. In this article, we will guide you through the steps to turn on the pilot light on a gas furnace.
Safety Precautions
Before attempting to turn on the pilot light, make sure to follow these safety precautions:
- Make sure you have turned off the main gas supply: Locate the shut-off valve and turn it clockwise to shut off the gas supply to the furnace.
- Do not attempt to light the pilot light with a matches or lighter: These can cause a spark that could ignite the gas and lead to a fire or explosion.
- Keep children and pets away: The furnace and its components can get very hot, and there is a risk of accidental ignition.
Step-by-Step Instructions
Turning on the pilot light on a gas furnace involves the following steps:
- Locate the Pilot Light Assembly: The pilot light assembly is usually located at the bottom of the furnace, near the bottom of the combustion chamber.
- Remove any Obstructions: Remove any obstructions, such as a pilot light shield, to access the pilot light assembly.
- Locate the Pilot Light Button or Knob: The pilot light button or knob is usually located next to the pilot light assembly. It may be labeled "Pilot" or have a symbol of a flame.
- Press and Hold the Pilot Light Button or Turn the Knob: Press and hold the pilot light button or turn the knob while simultaneously pressing the reset button (if equipped).
- Light the Pilot Light: Hold a long, lighter or ignition source to the pilot light orifice (hole) until the pilot light ignites. DO NOT HOLD THE LIGHTER OR IGNITION SOURCE AGAINST THE FURNACE COMPONENTS.
- Release the Pilot Light Button or Knob: Release the pilot light button or knob when the pilot light is burning steadily.
Troubleshooting
If the pilot light fails to ignite, try the following:
- Check for Obstructions: Make sure there are no obstructions, such as dust, dirt, or debris, blocking the pilot light orifice.
- Adjust the Pilot Light Orifice: If the pilot light orifice is clogged, try cleaning it or adjusting it to ensure a clear path for the pilot light.
- Check the Gas Supply: Make sure the gas supply is turned on and the pressure is at the recommended level.
- Check the Thermocouple: The thermocouple is responsible for ensuring the pilot light stays lit. If it is not functioning properly, the pilot light may not stay lit.
Precautions and Maintenance
To maintain your gas furnace and prevent issues with the pilot light, follow these precautions:
- Regularly Check and Clean the Pilot Light Assembly: Remove any obstructions and clean the pilot light assembly regularly to ensure proper function.
- Check the Furnace Filters: Make sure the furnace filters are clean and functioning properly to ensure proper air flow and combustion.
- Schedule Annual Maintenance: Schedule annual maintenance with a qualified HVAC technician to inspect and maintain your gas furnace.
Table: Troubleshooting Checklist
| Symptom | Possible Causes | Solution |
|---|---|---|
| Pilot light fails to ignite | Obstructions in pilot light orifice | Clean or adjust pilot light orifice |
| Low gas pressure | Gas supply turned off or low | Check gas supply and pressure |
| Faulty thermocouple | Thermocouple not functioning | Check and replace thermocouple |
| Dirty or faulty pilot light button or knob | Pilot light button or knob not functioning | Clean or replace pilot light button or knob |
Conclusion
Turning on the pilot light on a gas furnace is a relatively simple process, but it requires some patience and caution. By following the steps outlined above and taking precautions to ensure proper function, you can keep your gas furnace running safely and efficiently. If you are unsure or uncomfortable attempting to turn on the pilot light, it is recommended to contact a qualified HVAC technician for assistance.
