Water Heater Pilot Light Keeps Going Out

Water Heater Pilot Light Keeps Going Out: Troubleshooting and Solutions

Is your water heater leaving you in the cold? A constantly extinguishing pilot light is a frustrating problem, but often one you can fix yourself. This article will guide you through troubleshooting why your water heater pilot light keeps going out and provide solutions to get your hot water flowing again. We'll cover everything from simple checks to more involved repairs, helping you determine whether a quick fix or professional help is needed.

Why is my water heater pilot light going out? This common issue usually stems from a few key problems: low gas pressure, a clogged thermocouple, a faulty thermocouple, or a draft preventing ignition.

1. Check the Gas Supply:

• Gas Valve: Ensure the gas valve supplying your water heater is fully open. A partially closed valve restricts gas flow, preventing the pilot light from staying lit. This is the easiest fix and often overlooked.
• Gas Meter: Check your main gas meter. If the meter isn't registering gas flow, you may have a larger gas supply issue requiring a professional plumber's intervention. Listen for any hissing sounds near the gas line, indicating a leak (which should be addressed by a professional immediately).
• Gas Pressure: Low gas pressure can prevent proper ignition and sustained burning. While testing gas pressure requires specialized equipment, a professional can readily diagnose and resolve this. If other gas appliances in your home aren't functioning correctly, this is a strong indicator of low gas pressure.

2. Inspect the Thermocouple:

The thermocouple is a crucial safety device. It senses the pilot flame and keeps the gas flowing. If it's dirty, damaged, or malfunctioning, the pilot light will go out.

• Clean the Thermocouple: The thermocouple is a small metal rod usually located near the pilot light. Carefully inspect it for any debris or carbon buildup. Use a wire brush or fine sandpaper to gently clean it. Be extremely cautious when working near gas lines; turn off the gas supply before cleaning.
• Check for Damage: Examine the thermocouple for any visible damage such as cracks or bends. A damaged thermocouple needs to be replaced.

3. Examine the Pilot Assembly:

• Pilot Light Orifice: The small hole where the gas escapes to ignite the pilot light can become clogged with dust or debris. Use a small, thin piece of wire or a compressed air canister to carefully clear the orifice.
• Pilot Light Assembly: Inspect the pilot assembly for any damage or wear. A damaged assembly may need replacement.

4. Address Airflow Issues (Draft):

A draft can extinguish the pilot light.

• Ventilation: Ensure proper ventilation around the water heater. Excessive airflow can blow out the pilot flame. Check for any gaps or openings near the water heater that could be allowing drafts.
• Airflow Baffle: Some water heaters have airflow baffles designed to protect the pilot light from drafts. Make sure this baffle is correctly positioned and undamaged.

5. When to Call a Professional:

If after attempting these troubleshooting steps your water heater pilot light continues to go out, it's time to call a qualified plumber or gas technician. Problems such as low gas pressure, a faulty gas valve, or a more complex internal issue will require their expertise. Never attempt repairs beyond your skill level or if you're unsure.

By systematically checking these areas, you'll significantly increase your chances of resolving your water heater pilot light issue quickly and safely. Remember to always prioritize safety and call a professional if you're uncomfortable performing any of these tasks. Getting your hot water back on is worth the effort, but safety should always be your first concern.