Gas Fireplace Keeps Going Out But Pilot Light Stays On

Gas Fireplace Keeps Going Out But Pilot Light Stays On: Troubleshooting the Issue

A gas fireplace, when working correctly, provides a cozy and inviting atmosphere. But when the fireplace keeps going out despite the pilot light staying on, it can be frustrating. This article aims to shed light on the potential causes behind this issue and guide you through troubleshooting steps to resolve it.

1. Oxygen Deprivation

Gas fireplaces require a constant supply of oxygen for proper combustion. However, if the fireplace is installed in a tightly sealed room or has a poorly ventilated chimney, it can lead to oxygen deprivation. This lack of oxygen can cause the flame to extinguish even though the pilot light remains lit.

2. Faulty Thermocouple

The thermocouple is a safety device that detects the presence of a flame and sends a signal to the gas valve to keep the gas flowing. If the thermocouple becomes faulty or dirty, it may fail to detect the flame, causing the gas valve to close and the fireplace to go out.

3. Blocked Chimney Flue

The chimney flue is the passage through which combustion gases escape. If the flue becomes blocked by debris, such as bird nests or soot, it can restrict the flow of gases and cause the fireplace to go out.

4. Misaligned Gas Valve

The gas valve controls the flow of gas to the burner. If the gas valve is misaligned or malfunctioning, it may not provide the correct amount of gas to maintain a stable flame, leading to the fireplace going out.

5. Electrical Issues

Gas fireplaces often have electrical components, such as an ignition system or a blower. Faulty wiring, damaged switches, or malfunctioning ignition modules can all contribute to the fireplace going out.

Troubleshooting Steps

1. Ensure Proper Ventilation

Open windows or doors near the fireplace to allow for more oxygen flow. If the fireplace is installed in a well-sealed room, consider installing a fresh air intake to bring in outside air.

2. Inspect and Clean the Thermocouple

Locate the thermocouple and examine it for any signs of damage or corrosion. Gently scrub the tip of the thermocouple with a fine-grit sandpaper or a wire brush to remove any dirt or debris.

3. Check the Chimney Flue

Use a flashlight to inspect the chimney flue for any obstructions. If you notice any blockages, remove them carefully using a chimney brush or call a professional chimney sweep.

4. Inspect the Gas Valve

Turn off the gas supply to the fireplace and remove the access panel to the gas valve. Check if the valve is properly aligned and functioning correctly. If you suspect any issues, call a qualified gas technician.

5. Troubleshoot Electrical Components

Check the wiring connections, switches, and ignition module for any signs of damage or malfunction. If you have experience working with electrical systems, you can try troubleshooting these components yourself. Otherwise, contact a licensed electrician.

Safety Considerations

Always follow proper safety precautions when working with gas fireplaces. Ensure the gas supply is turned off before performing any maintenance or repairs. If you are not comfortable troubleshooting the issue yourself, do not hesitate to contact a qualified gas technician or fireplace professional.