Gas Fireplace Pilot Light Won T Go Out

Gas Fireplace Pilot Light Won't Go Out: A Troubleshooting Guide

A gas fireplace is a convenient and efficient way to enjoy the ambiance of a fire without the hassle of dealing with wood or charcoal. However, if the pilot light won't go out, it can be a cause for concern. In this article, we'll provide a comprehensive guide to troubleshooting a gas fireplace pilot light that won't go out.

Why Won't the Pilot Light Go Out?

There are several reasons why a gas fireplace pilot light may not go out. The most common causes include:

Thermostat Issue: If the thermostat is set too high, the fireplace may not turn off because it thinks the room is still too cold.
Dirty or Clogged Orifice: Over time, dirt and debris can accumulate in the orifice, which is a small opening that allows gas to flow to the pilot light. This can restrict the flow of gas, causing the pilot light to go out.
Faulty Thermocouple: The thermocouple is a safety device that senses the temperature of the pilot light and shuts off the gas supply if the pilot light goes out. A faulty thermocouple may not be able to sense the pilot light, causing the gas supply to stay on.
Damaged Gas Valve: The gas valve controls the flow of gas to the fireplace. A damaged gas valve may not be able to shut off the gas supply properly, causing the pilot light to stay on.

Troubleshooting Steps

If your gas fireplace pilot light won't go out, there are several troubleshooting steps you can take:

1. Check the Thermostat: Ensure that the thermostat is set to a lower temperature. If the room is already warm, try lowering the thermostat by a few degrees and see if that solves the problem. 2. Clean the Orifice: Use a small wire brush or cotton swab to gently clean the orifice. Be careful not to damage the orifice. 3. Test the Thermocouple: Remove the thermocouple from the pilot assembly and hold it in a flame. If the thermocouple is working properly, the millivolt output will increase. If the output does not change, the thermocouple may need to be replaced. 4. Inspect the Gas Valve: Turn off the gas supply to the fireplace and remove the gas valve. Inspect the valve for any visible damage or debris. If the valve is damaged, it will need to be replaced.

Safety Precautions

When working on a gas fireplace, always follow these safety precautions:

Turn off the gas supply to the fireplace before performing any maintenance or repairs.
Do not attempt to remove or replace a gas valve without the assistance of a qualified technician.
If you are uncomfortable performing any of the troubleshooting steps outlined above, contact a licensed gas fitter or HVAC technician for assistance.