If your gas fireplace refuses to turn on, begin to troubleshoot by checking that the gas supply valve is fully open. If it isn't, simply open it and try again. Then, ensure that the pilot light is lit – more on that soon. If the problem persists, examine the electrical components.
Could also be that the pilot is too small (plugged) to heat up the thermopile enough to send enough current all the way to the switch, but enough to light by jumping at the valve. Try tapping the top of the pilot with a screwdriver a few times while it's on to knock out any debris caught inside.
You could be dealing with a bad thermo couple/ thermo pile. The thermo couple is a sensor that senses heat and allows the pilot light to remain lit, the thermo pile allows gas to pass through the burner system and provide light and heat. You could be dealing with a bad one or it could be shorting out some where.
Pilot Light: Start by checking the pilot light. If it is out, resetting it could be all you need to fix the problem. Thermocouple/Thermopile/Oxygen sensor: Next, check each of these sensors to make sure they are functioning properly. Start with the thermopile to see if the valve is letting gas in.
One of the most common problems faced by homeowners with gas fireplaces is the pilot light going out or not staying lit. The pilot light is a small flame that ignites the gas burner, which produces the heat for your fireplace — if the pilot light goes out, your fireplace won't work.
Faulty thermostat, thermopile, or thermocouple.
Depending on the age of your unit, you'll have a thermostat or thermopile between your gas valve and pilot light that contributes to ignition. If it's loose or faulty, or if your thermostat is malfunctioning, it may prevent your fireplace from turning on.
Thermocouple issues, pilot light problems, blocked venting systems, safety features, and gas supply issues are common reasons why gas fireplaces shut off. Regular maintenance, cleaning, and professional servicing are essential to prevent unexpected shut-offs.
Turn the knob from the “Off” to the “Pilot” position. Push in the pilot knob, which manually sends gas into the system. Push the igniter button once every second until it lights. Depending on how long it's been since the gas fireplace was last used, ignition may take multiple attempts.
Common causes include problems with the pilot light, thermocouple, gas supply, obstructions, ignition system, gas pressure, and weather conditions. While some issues can be resolved with basic troubleshooting, others may require professional assistance.
Gas fireplace igniter replacement cost
A gas fireplace igniter costs $90 to $150 to replace, including labor. This component uses electricity to ignite the gas and start the fire. Over time, the igniter may stop working from age or damage.
Turn the ON/OFF/PILOT knob to the 'OFF' position and wait for five minutes to clear out any residual gas. After waiting, press and hold the ON/OFF/PILOT knob. Then, press the igniter button repeatedly (as per the manual's instructions, usually for about 30 seconds) until the pilot ignites.
Ensure the power switch is turned on for electric fireplaces and verify that the connecting cord is plugged in firmly. If you own a gas fireplace, check that the gas supply valve is turned on. If you haven't been using the fireplace, you may need to expel air from the pilot tubing.
A gas fireplace switch that stops working can be caused by a variety of issues, ranging from dead batteries to faulty wiring or gas supply problems. By understanding how the system works and diagnosing common problems, you can often fix the issue yourself.
Delayed Ignition: If there is a delay between when you turn the fireplace on and the flames actually igniting, it could mean that your ignition switch is faulty or that your burner is clogged. You should see and hear the gas igniting all at once (with a whoosh sound).
This initial gas fireplace service fee is often under $350 plus any parts required for the repair. Basic maintenance or minor repairs, such as pilot light adjustments, can be as low as $100, while more complex issues, like control valve replacements or blower motor repairs, may reach $1,000.
If your fireplace uses a propane tank, check that the gas knob is switched on. If it is not delivering gas with the knob open, then the gas tank may be empty. You need to contact your supplier for a refill. Similarly, if you have piped natural gas, you need to check that the gas knob is on.
If your own troubleshooting fails to solve the problem, you should call a fireplace service company near you for help. Most service calls for gas fireplaces cost about $100, and repairs for pilot lights cost $150 on average.
Check your circuit breakers: Reset any tripped breakers. Check your fuel supply: If you don't smell gas in the home, try another gas appliance (e.g., your stove). If it won't ignite, chances are it's a supply issue. Check your air filter: Regularly change your air filter.
If dust, soot, or debris is clogging the pilot tube (the small pipe that delivers gas to the pilot light), the flame either won't ignite or it will be weak and unstable. Cleaning the pilot tube is usually necessary to restore proper gas flow to the flame.
But in general, an efficiently running modern gas fire kept clear of dust and debris should hit or exceed that 10 to 15-year mark before showing signs of wear. Older or cheaper models may start to struggle after 7–8 years. Regular servicing and maintenance will be essential to maximising lifespan potential.
Press the control knob down and hit the ignition switch.
To ignite the pilot light, press your finger into the center of the control knob and hold it in place. Then, hit the fireplace's ignition switch, which is typically a red button located near the control knob. Tap the switch until the pilot light ignites.