The ultimate guide to troubleshooting a water heater pilot light that won’t stay lit
What To Know
- If the thermocouple is faulty, it may not send the necessary signal to keep the gas valve open.
- Drain the gas line by opening the valve at the bottom of the line.
- Troubleshooting a water heater pilot light can be a rewarding experience, empowering you to restore hot water to your home.
If your water heater‘s pilot light keeps flickering out, leaving you with cold showers and frustration, you’re not alone. This common issue can have several underlying causes, but don’t worry – troubleshooting can be a breeze with the right guidance.
1. Gas Supply Interruption
- Check the gas valve: Ensure that the valve is fully open, allowing gas to flow to the water heater.
- Inspect gas lines: Examine the gas lines for any kinks, leaks, or blockages that may restrict gas flow.
- Check gas meter: Verify that the gas meter is functioning correctly and has sufficient gas supply.
2. Clogged Orifice
- Clean the orifice: The orifice is a small opening where gas flows into the pilot assembly. If it’s clogged, gas flow will be obstructed. Use a wire brush to gently clean the orifice.
- Check for debris: Remove any dirt, dust, or spider webs that may have accumulated around the orifice.
3. Faulty Thermocouple
- Test the thermocouple: The thermocouple generates a small electrical current when heated by the pilot flame. If the thermocouple is faulty, it may not send the necessary signal to keep the gas valve open.
- Replace the thermocouple: If the thermocouple is defective, it needs to be replaced with a new one.
4. Defective Pilot Assembly
- Inspect the pilot assembly: Check for any loose connections, corrosion, or damage to the pilot assembly.
- Clean the pilot assembly: Remove any dirt, debris, or soot that may have accumulated on the pilot assembly.
- Replace the pilot assembly: If the pilot assembly is damaged or malfunctioning, it may need to be replaced.
5. Draft Conditions
- Check for drafts: Strong drafts can blow out the pilot flame. Ensure that there are no nearby fans or open windows creating excessive airflow.
- Install a draft hood: A draft hood can help protect the pilot flame from drafts.
6. Water in Gas Line
- Drain gas line: If water has entered the gas line, it can prevent gas from flowing properly. Drain the gas line by opening the valve at the bottom of the line.
- Purge gas line: After draining, purge the gas line by turning on the gas valve and lighting the pilot light.
7. Vent Blockage
- Check vent pipe: Make sure the vent pipe is clear of any obstructions, such as bird nests or debris.
- Inspect vent cap: The vent cap should be properly installed and not blocked.
Troubleshooting Tips
- Use a flashlight to inspect dark areas for any visible damage or blockages.
- If you’re not comfortable troubleshooting yourself, call a licensed plumber for assistance.
- For safety reasons, always turn off the gas supply before performing any repairs.
Final Thoughts: Embracing the Troubleshooting Spirit
Troubleshooting a water heater pilot light can be a rewarding experience, empowering you to restore hot water to your home. Remember, patience and attention to detail are key. If you encounter persistent issues, don’t hesitate to seek professional help.
What You Need to Know
Q: Why does my water heater pilot light keep going out after I light it?
A: There could be several reasons, including a clogged orifice, faulty thermocouple, or draft conditions.
Q: Can I replace the thermocouple myself?
A: Yes, it’s relatively easy to replace the thermocouple if you have basic plumbing skills.
Q: How often should I clean my water heater‘s pilot assembly?
A: It’s recommended to clean the pilot assembly annually or as needed, depending on usage and environmental conditions.
