How to Relight a Water Heater Pilot: A Step-by-Step Guide
Water heaters are an essential appliance in every household, providing hot water for daily needs. However, like any other appliance, they require regular maintenance to function properly. One common issue with water heaters is the pilot light going out, which can cause the unit to shut down. In this article, we will provide a step-by-step guide on how to relight a water heater pilot.
Why Does the Pilot Light Go Out?
Before we dive into the steps to relight the pilot, it’s essential to understand why the pilot light might go out in the first place. Here are some common reasons:
- Incorrect installation: The pilot light may not have been installed correctly, causing it to go out easily.
- Dirty or clogged burner: Sediment or debris in the burner can prevent the pilot light from staying lit.
- Faulty thermocouple: The thermocouple is responsible for sensing the pilot light flame and shutting off the gas supply when the flame goes out. If it’s faulty, the pilot light may not stay lit.
- Low gas pressure: Insufficient gas pressure can cause the pilot light to go out.
- Clogged or corroded orifices: Mineral buildup or corrosion in the orifices can restrict gas flow, leading to the pilot light going out.
How to Relight a Water Heater Pilot
Relighting the pilot light is a relatively simple process, but it requires some caution and attention to detail. Here are the steps to follow:
Step 1: Turn Off the Gas Supply
- Turn off the gas supply valve: Locate the gas supply valve and turn it clockwise to shut off the gas supply to the water heater. This is an essential safety precaution to prevent accidental ignition or gas leaks.
- Verify the gas supply is off: Check the gas supply valve to ensure it’s fully closed. You should not hear any hissing sound or feel any gas escaping.
Step 2: Release Any Built-Up Pressure
- Open the drain valve: Locate the drain valve at the bottom of the water heater and open it to release any built-up pressure. This is important to prevent damage to the water heater or surrounding structures.
- Allow water to drain: Let the water drain completely before proceeding.
Step 3: Light the Pilot
- Locate the pilot light: Find the pilot light orifice and remove any protective cover or cap.
- Light the pilot: Use a long lighter or match to light the pilot light. Hold the flame to the orifice for about 30 seconds to ensure it’s lit.
- Adjust the pilot light: Adjust the pilot light by turning the adjustment screw counterclockwise to decrease the flame size or clockwise to increase the flame size.
Step 4: Check for Gas Leak
- Use a gas leak detector: Attach a gas leak detector to the pilot light orifice to ensure there are no gas leaks.
- Check for hissing sound: Listen for any hissing sound or feel for any gas escaping. If you detect a gas leak, turn off the gas supply valve and contact a professional plumber.
Step 5: Turn On the Gas Supply
- Turn on the gas supply valve: Turn the gas supply valve counterclockwise to restore the gas supply to the water heater.
- Check the pilot light: Monitor the pilot light to ensure it stays lit. If it goes out, you may need to relight it again.
Step 6: Test the Water Heater
- Check the water temperature: Check the water temperature by turning on the hot water faucet. The water should be hot and ready for use.
- Test the water heater: Test the water heater by running hot water through the pipes to ensure it’s working properly.
Tips and Precautions
- Use a gas shut-off wrench: Use a gas shut-off wrench to turn off the gas supply valve, as it’s designed to prevent accidental rotation.
- Wear protective gear: Wear protective gear, including gloves and safety glasses, when working with gas appliances.
- Call a professional if necessary: If you’re not comfortable relighting the pilot light or if the issue persists, call a professional plumber to assist.
Conclusion
Relighting a water heater pilot is a relatively simple process that requires some caution and attention to detail. By following the steps outlined in this article, you should be able to relight your water heater pilot and have hot water flowing again. Remember to always turn off the gas supply valve and check for gas leaks before attempting to relight the pilot. If you’re unsure or uncomfortable with the process, it’s always best to call a professional plumber for assistance.
