Pilot light failure can happen for several reasons, including: Clogged intake valves – Buildup of dust and dirt can cut off oxygen to the pilot light chamber, making it difficult for its flame to “breathe.” Sometimes a pilot light can go out as a result of some source of wind or air simply blowing it out. This can mean that the pilot tube tip is dirty. Poor Electrical Wiring. First, it is to restart an appliance’s main burner. Its job is to decrease the pressure of the natural gas before it enters your home and gas appliances. The thermocouple is the small copper rod that the pilot light hits. Usually, a problem with the thermocouple causes the pilot light to go out. Ohio License: 48313 Kentucky License: HM05880. Sometimes this can happen simply due to a strong draft nearby. This can mean a buildup of gas, and when the pilot is relit or relights itself it could result in a very serious explosion. One common reason that an older furnace fails to operate is a result of the pilot light going out. Have a professional inspect and clean your thermocouple. Well, if your gas furnace pilot light won’t stay lit, it’s usually due to 1 of these 4 issues: A bad thermocouple; Pilot light problems; Bad gas regulator; Bad gas … Dirty, restricted or weak pilot light—If you have an older furnace, this may be the problem. Dirt buildup is problematic for many parts of your furnace, including the area around your pilot light. If you have an older model furnace or water heater that uses natural gas, or if you have a set of gas logs in your fire place, you have probably seen the small blue flame known as the pilot light.You may even have been able to experience the thrill of relighting the pilot light when it goes out. Or, it could be that your furnace as a whole may just be broken. A heating system that is that old is likely to have many parts and components that have become dirty, worn and inefficient through the years; any combination of these parts failing can lead to a pilot light going out. It’s one of the reasons … it is 20 plus years old and i told customer she should replace it . Sometimes, this is the only problem that you need to fix, and things will go back to normal. Solve this simple math problem and enter the result. Have a professional check your gas regulator for problems. Air supply: Too much or too little air can extinguish your pilot light. You should hear the furnace attempting to ignite. The pilot light needs a strong flow of gas to make a strong, steady blue flame that the thermocouple can sense. Because accessing the orifice requires removing your furnace’s burner assembly, we suggest having a professional clean the pilot orifice. Pilot lights occasionally go out, which isn’t a cause for concern. If this pilot light ever goes out, the heater has no way of actually turning on to heat the water or air that your particular type of heater circulates to warm the house or other elements. If your pilot light re-lights easily after going out overnight, it’s possible it was blown out by a draft. Common problems with traditional standing pilot lights. If you are unsure or uncomfortable handling your pilot light, not to worry! When your pilot light goes out, your furnace won’t ignite and heat your home. We’ll send out an experienced heating tech right away. Simply put, a crack in the heat exchanger will impact the air pressure and venting inside the combustion chamber, which directly effects the flame inside. The pilot flame looks good (blue) and covers a sizable area at the end of the thermocouple. I've noticed that when the weather warms up into the 40's or 50's, that's when the pilot will start it's intermittent … Your furnace’s gas valve delivers gas to your pilot light and combustion chamber. A faulty or dirty ignition or sensor is a relatively easy fix, so follow these steps, and you may be able to … Our team would be happy to help! Dirty pilot tubes can also result in a split flame. I have tried retrofitting other pilot burners to it and the flame is way too large. Other times, the thermocouple in your furnace might manually shut off the pilot light for safety reasons. A thermocouple that is dirty or malfunctioning will often shut off your gas supply in error, causing the pilot light to go out and your furnace to stop working. Once you light the pilot, you need to keep the button depressed for at least 30 seconds (sometimes up to 1 minute). The pilot going out is a common occurrence for those that have water heaters or older gas furnaces. The ignition board is the computer board that controls the gas, spark, and ignition systems of intermittent pilot or hot surface ignition systems. Without that gas, your pilot light couldn’t light. Hide Licenses The thermocouple on your heating system is a safety device that determines whether or not your furnace pilot light is lit. If you are trying to light a standing pilot light on an old furnace but it keeps going out, make sure you are holding the pilot button long enough. Here are some steps to take when your furnace pilot light goes out. Don’t worry, we’ll explain them in detail and show you what you can do to get your heat back. If this happens, there could be an issue with how your flue pipe is set up or how your system is venting. This can happen on So what’s the problem? If you hear the blower running without the heat, then it isn’t a problem with the power, and you can likely skip checking the power. But if the regulator is old or broken, it may not allow gas to flow at a strong or steady enough pressure to light your furnace’s pilot light. The owner's manual provides information for adjusting the flame. A thermocouple that is dirty or malfunctioning will often shut off your gas supply in error, causing the pilot light to go out and your furnace to stop working. The purpose of a standing pilot light (where the flame stays lit at all times) is to serve as a small ignition flame for the gas burner. The pilot light depends on a reliable source of gas or propane in order to stay lit. For example, dirt can build up in the intake valve and restrict the amount of oxygen that is required to keep the pilot light … This is typically the problem if you can hear your furnace click on but it does not fire up. But if the orifice is dirty or restricted, the pilot light won’t light properly. So if the valve is accidentally turned to the OFF position or has gone bad, your pilot light won’t stay lit. © 2020 Ranshaw Plumbing & Heating. Dirt buildup around the pilot light. I have a 20 year old Bryant gas furnace with a standing pilot light, which intermittently will go out. 5) Improper Air Flow, or a Strong Draft, Blows the Pilot Out. The flame is located inside the appliance. Furnace pilot light goes out intermittently. The oil from your fingers can cause the igniter to burn out faster. While most modern gas furnaces are lit with an electronic ignition, if you have an older furnace, there’s a good chance that you have a standing pilot flame that starts your heating system. E.g. ...then you most likely have a dirty or restricted pilot light orifice. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. Pilot lights will occasionally go out. Usually, you can find this light on older models of propane appliances. They’ll replace the regulator if it’s gone bad. Just contact us and we’ll send a tech right over. Depending on the location of the crack, air can be blown inside the heat exchanger and onto the flame. If all else fails, check the gas valve. If the pilot flame is wrapped around the thermocouple body and the flame is blue but not roaring then it should be working otherwise it could be a small crack in your heat exchanger causing the problem by blowing the pilot flame out from time to time. View Licenses A cracked heat exchanger is something we often see in older heating systems and is common reason that your pilot light may go out. Improper Venting & Airflow. That’s important because gas is always being supplied to the pilot to keep the flame lit. for 1+3, enter 4. You see, the pilot light orifice controls the flow of gas to your pilot light. 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