Gas Heater Pilot Light Goes Out

Why Your Gas Heater Pilot Light Keeps Going Out & How to Fix It

A flickering or extinguished pilot light on your gas heater is a frustrating problem, leaving you shivering in the cold. This common issue often stems from simple, fixable problems, but understanding the cause is key to a lasting solution. This guide will walk you through the common culprits behind a failing pilot light and provide you with practical, step-by-step troubleshooting advice.

Common Causes of a Gas Heater Pilot Light Going Out

Several factors can contribute to a pilot light that keeps extinguishing. Let's break down the most frequent offenders:

• Low Gas Supply: This might seem obvious, but a low gas supply to your heater is a primary suspect. Check your gas meter to ensure you haven't run low on gas. Also, consider whether other gas appliances in your home are functioning correctly.

• Clogged Pilot Light Orifice: Dust, debris, or spiderwebs can accumulate in the tiny orifice (the small hole where the gas escapes to ignite the pilot light). This blockage restricts gas flow, preventing consistent ignition.

• Faulty Thermocouple: The thermocouple is a small, metal rod that senses the pilot light flame. If the thermocouple is dirty, damaged, or failing, it won't register the flame correctly, causing the gas supply to shut off. This is a crucial component for safety.

• Weak or Damaged Pilot Light Assembly: The pilot light assembly itself might be worn out or damaged, preventing proper ignition. This includes the pilot light burner and the igniter. Cracks or corrosion in the assembly can disrupt the gas flow.

• Improper Gas Pressure: Insufficient gas pressure can also lead to an inconsistent pilot light. While you shouldn't attempt to adjust the gas pressure yourself, it’s a factor to consider if other solutions fail.

Troubleshooting Your Gas Heater Pilot Light

Before you begin, remember safety first! Turn off the gas supply to your heater before attempting any repairs. If you're uncomfortable working with gas appliances, contact a qualified heating technician.

Here's a step-by-step guide to troubleshooting:

1. Check the Gas Supply: Confirm your gas meter has sufficient gas and that no other gas appliances are causing a drop in pressure.

2. Clean the Pilot Light Orifice: Use a small, stiff wire brush, a toothpick, or compressed air to gently clean the pilot orifice. Be careful not to damage the delicate hole.

3. Inspect the Thermocouple: Examine the thermocouple for any signs of damage, corrosion, or significant dirt buildup. If it appears damaged, it will likely need to be replaced by a professional.

4. Check the Pilot Light Assembly: Look for cracks, corrosion, or any other signs of damage in the pilot assembly. If you find damage, replacement is usually necessary.

5. Relight the Pilot Light (following your heater's instructions): Most gas heaters have a specific procedure for relighting the pilot light. Consult your owner's manual for detailed instructions. This usually involves holding down a button while igniting the pilot with a match or lighter.

When to Call a Professional

If you've tried the above steps and your pilot light continues to go out, it's time to call a qualified heating and gas technician. Issues with gas pressure, a faulty thermocouple, or a damaged pilot assembly require professional expertise to diagnose and repair safely. Don't risk attempting complex repairs yourself, as this can be dangerous.

Preventative Maintenance

Regular maintenance is crucial for keeping your gas heater running efficiently and safely. Consider these preventative measures:

• Annual Inspection: Schedule an annual inspection by a qualified technician. This will help identify potential problems early.

• Clean the Heater Regularly: Dust and debris can accumulate around the heater, affecting its performance. Clean the area around the heater regularly.

By understanding the common causes and implementing these troubleshooting steps, you can often resolve a troublesome pilot light. Remember, prioritizing safety and seeking professional help when necessary ensures your comfort and safety throughout the heating season.