Worn Out Igniter If your fireplace uses an electronic igniter, it may fail over time. The igniter creates the spark that lights the pilot flame. If it's worn out or faulty, the spark may not be strong enough to ignite the gas.
If gas is coming out of the pilot but it still won't light, the spark igniter could be the problem. You should clear out any debris between the igniter and thermocouple. Blow compressed air into the pilot area, wait a couple of minutes, and then try again to see if this fixes the problem.
Gas Fireplace Igniter Isn't Sparking
If your pilot is lit and the fireplace isn't igniting when you push the button or flip the switch, the igniter may be dirty or defective. Clear away any dirt or debris that may be in the way between the igniter and thermocouple or thermopile.
Cause: Igniter is Clogged with Debris
The most common reason a gas stove won't light is that the igniter is clogged with debris. Over time, dirt and dust can accumulate on the igniter and prevent it from sparking. If this is the case, you'll need to clean it off in order for the stove to work properly.
If there is no spark, you'll have to replace the ignition control module and/or the ignitor itself. If the ignitor is not igniting the gas, but there is a spark. You can try cleaning the electrodes with fine steel wool, to remove any carbon buildup.
DOES THE IGNITER MAKE A CLICKING NOISE? Make sure that the igniter is making a clicking noise when you press the igniter button. If it doesn't click, then the wires may not be connected properly, the battery may be dead or installed incorrectly, or the igniter module may have failed.
Cause: The igniter may be damaged, worn out, misaligned, or covered in debris.
If your lighter's flame is small or completely nonexistent, refuel it with a butane can and/or loosen the nozzle that releases fuel so more comes out. If there's no spark, replace your lighter's flint with a new one.
Reset The Furnace Ignitor
Find the burner door on the furnace and look behind it to find the ignitor. Turn it to “OFF” and wait for five minutes. After you wait, turn it back on and return the door to the burner. It is important to make sure the switch on the door is properly engaged.
In many cases, the reason that you can't get your pilot light to ignite is that the pilot tube is clogged. This is a small metal tube that supplies the gas needed to ignite the pilot and keep it lit. The pilot tube often becomes clogged with debris, and this will prevent gas from flowing to the pilot light.
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.
The problem with your ignition could be as simple as the burner, valves and ignition being clogged with food and grease that may have built up over time. Before inspecting, make sure that the gas supply is switched off, then inspect the areas which could be impacting your ignition.
If your gas stove isn't lighting despite the clicking sound, it could be due to several factors. Common causes include gas leaks, faulty ignition systems, clogged burner ports, or issues with the gas supply.
If the ignition coil does not have spark, it's time to check its wires. Use a test light to check the continuity on the signal wire and power wire on the ignition coil. If both wires are functional but the coil fails to produce spark, the ignition coil or the ignition control module is bad.
Accumulated dirt can prevent the igniter from functioning well. Misaligned or damaged igniter. If there's physical damage or misalignment, it may fail to spark. Faulty ignition module.
If the fire doesn't 'click' when you try to light it may be a faulty spark ignition unit, or occasionally a wire adrift. Its always worth looking under the fire to see whether a wire has come loose before calling an engineer.
If it doesn't click, then the wires may not be connected properly, the battery may be dead or installed incorrectly, or the igniter module may have failed.
Several factors can stop a furnace from igniting: Thermostat Malfunctions: Incorrect thermostat settings or a faulty thermostat. Fuel Supply Problems: Insufficient propane supply, closed valves, or leaks. Ignition System Failure: Issues with the pilot light, electronic igniter, or other ignition components.
A furnace ignitor replacement costs $100 to $250 on average. Most universal hot-surface ignitor prices are $15 to $35 for the part alone. Gas furnace ignitor prices are $20 to $100 for parts from the original manufacturer (OEM). The labor cost to replace a heater ignitor is $80 to $200.