If the furnace does light but shuts down immediately, this would indicate a flame sensor issue. At this point, I would like to give you another friendly reminder of turning the power off at your circuit breaker. Just clean the flame sensor and your furnace will stay on. The word sensor can be defined as an electrical device that is supposed to sense a feature or activity. If you cleaned your flame sensor but it’s still malfunctioning, you may need to replace it. You should be getting a low resistance reading on your multimeter. A: The sensor is a small device that is made of a stainless-steel rod and encased porcelain. It does not feel heat, it instead passes a small electrical current thru the fire itself, so it has to be in the flame. High temperature Kanthal flame rod material that can withstand 1800 degree F. If you feel safer, you can also shut the power off on the furnace itself. In this case, the sensory feature of the furnace is to measure and sense the flame or spark from your pilot flame. The flame sensor is located within the blower compartment (behind the upper compartment panel) and looks like a long metal rod. Technical Hot and Cold 38568 Webb Dr. Westland, Michigan 48185 (734) 326-3900 (888) 828-8317 Open the top using your screwdriver. The flame sensor is usually held in place by a single sheet metal screw. If the flame sensor isnât able to confirm that a flame is actually burning inside the furnace, it will shut the â¦ Show More. The job of the flame sensor is to quickly confirm that there is actually a flame present when the gas valve is open so natural gas isnât being dumped inside your home instead of being burned inside the furnace. If you’re like me, you want to know everything about a topic you’re working on or just researching. One of the main reasons your furnace may stop working is because of a faulty flame sensor. The same thing goes for a furnace. Brand: Trane-+ $269.95 each ADD TO CART. You will have to find the flame sensor to perform the test. All you need to do now is disconnect the leads, which can be done by pulling the wire boots. 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With the power to the furnace off, the flame sensor can be unscrewed and removed/pulled outside of the blower compartment â¦ Itâs usually bent, and it sits just in front of the pilot flame inside the furnace. This vital component is designed to keep an eye on the gas burner. Home » Flame Sensor: A Crucial Part of a Furnace. SKU: SEN0432. If your furnace keeps shutting off, it could be due to low airflow. A furnace flame sensor is a very basic part of your furnace. The way it works is simple. The behavior of the gas furnace â¦ Designed and used in much the same fashion as the larger flame sensor, the pilot sensor monitors the presence of the pre-ignition pilot flame. Although the word flame goes hand in hand with furnace, the word sensor may throw you off a bit. The flame sensor is an essential part of the furnaceâs safety system. When it cannot sense that burner, the furnace runs then shuts off and starts again. Show All. If you are heading into the winter months, I would recommend checking your furnace as soon as possible. Youâre seeing this ad based on the productâs relevance to your search query. 17. Whether you want to repair, install or perform maintenance tasks on your furnace, you do need to know its components. When the furnace turns on, the gas valve opens and sends gas into the combustion chamber, where the burners are ignited by the pilot light. Low Airflow. Just wanted to add that the darkened spot that keeps forming on the flame sensor occurs just a few mm above where the bend in the rod occurs (the end of it then sticks up into the flame), and from looking at the furnace when it is running the gas flames don't appear to actually touch the portion of the rod that keeps â¦ A: Well, the most common signs of a bad flame sensor can include gas burners lighting and then going out after a few seconds. Over time, a flame sensor may loose it's ability to sense the flame, even when the flame is present. B1172601 Amana/Goodman Furnace Spark Ignition Sensor. Disclaimer. This would include the flame sensor. Your main goal is just to clean off any buildup. In this case, you can try to replace the flame sensor yourself. I always recommend you do this when repairing, installing or maintaining your home appliances. Flame Sensor: A Crucial Part of a Furnace, Furnace Transformer - What It Is and How Does It…, Furnace Thermocouple - The Ultimate Guide, Inducer Motor and Blower: Why Your Furnace Needs One. The flame sensor is a safety device that ensures the furnace will only run if a flame is detected when the gas valve is open. You may also find the white porcelain of the flame sensor cracked or broken. $18.94 In-Stock. As with any mechanical part, you should always keep it clean for optimal performance. Every furnace has a flame sensor. You may find many reasons why a flame sensor is not working. Flame Sensors can be mounted remotely on multiple burners. The first reason can be a dirty flame sensor. Step 1 - Locate the Furnace Flame Sensor. This will include the proper tools. â¢ If proof of flame is not present, the ICM will de-energize the gas valve and âretryâ for ignition or lockout. One symptom of a bad flame sensors is the ignition, which has already been discussed. Q: What does a flame sensor do in a furnace? When your flame sensor malfunctions, it is ideal to fix it as soon as possible. When a furnace's main burners ignite, the sensor picks up the heat and signals the main furnace control board that it's ok to allow that main burner to â¦ Most gas furnaces use either a flame sensor or a thermocouple, often referred to as a "thermal coupler." The first step is to shut off all the power going to the furnace. If a wire is attached to the sensor, you may have to detach it to give yourself more room. Think of it as a chain reaction. As a safety precaution, you can replace and install a new flame sensor every two to three years. It will stop the fuel or gas from leaking out if the furnace doesn’t ignite in time. As with any major appliance, safety features are always important. Watch the furnace ignite you will see spark or orange glow in front of one burner and the flame sensor should be on opposite side, but I have seen them on the next burner from â¦ If the unit takes a few extra seconds to start up or the fan â¦ When the thermostat tells the furnace to kick on, the gas valve opens up and fires gas into the combustion â¦ You can keep your sensor clean by maintaining it on a regular basis. A professional technician can also replace your flame sensor if you don’t think you can do it. The flame sensor’s job is to create a current of electricity. The flame sensor is an important safety feature inside a furnace. You can also unplug the furnace as well. Most home furnaces also employ a pilot flame sensor as well. Measuring the flame. ICP 24376701 Flame Sensor: View ICP Part # 24376701: Serving these International Comfort Products Brands. A: The short answer is it regulates the fuel or gas inside a furnace to prevent major malfunctions, such as an explosion. It does this by generating a potential (voltage) at the flame sensing terminal , this terminal is connected to the sensor with a â¦ The whole process is an ignition sequence. Make sure that all heating is turned off and cannot travel into the furnace. As long as the component senses the flame, it sends a message to the main furnace control board telling it to keep the main burner on and the gas valve open. If the control board does not read the correct level of electrical current, the furnace will cut off the fuel intake to prevent an explosion or fire. Furnace flame sensor is safely designed to detect flame, if the sensor does not detect flame, it shuts the gas valve off, preventing raw gas from dumping into your home. If the pilot flame goes out, the flame sensor will turn the unit off to prevent natural gas from leaking into the home. Make sure that you also have extra paper towels on hand. Honeywell 120 or 230 Vac Flame Sensor, Ultraviolet, Purple Peeper, Self-Checking C7061A1020. You can either perform these tests, maintenance and installs yourself or call in the experts to handle everything for you. A flame sensor is an important safety element on your gas heating equipment. To troubleshoot flame sensor: â¢ Disconnect the flame sensor wire from sensor. â¢ Connect a micro-amp meter in â¦ Your recently viewed items and featured recommendations, Select the department you want to search in, All customers get FREE Shipping on orders over $25 shipped by Amazon, 48â Under Cabinet Lighting 4000K - Under Counter Lighting and Under Cabinet LED Lighting by Lux Light with 12V Adapter and Sensor Switch, 36â Under Cabinet Lighting 3000K - Under Counter Lighting and Under Cabinet LED Lighting by Lux Light with 12V Adapter and Sensor Switch, 36â Under Cabinet Lighting 4000K - Under Counter Lighting and Under Cabinet LED Lighting by Lux Light with 12V Adapter and Sensor Switch. Check Your Results. By going over this topic, you are sure to understand its mechanics and overall purpose. Itâs located on the burner assembly and is just a thin metallic rod. The good thing about this step is that it’s easy to do. Therefore, any type of dust could affect its performance. Then, it interacts with the furnaceâs control board to shut down the unit if necessary and prevent an explosion. It's essentially a confirmation mechanism. The sensor is a short length of thin metallic rod that creates a small current of electricity in order to confirm there is fire burning within the furnace. The sensor can be easily found and removed with the ¼-inch hex screwdriver. Contact Us. A ground path is the other half. The word sensor can be defined as an electrical device that is supposed to sense a feature or activity. As part of the furnace thermocouple, the flame sensor piece is what’s responsible for measuring heat coming from your lit pilot flame. A furnace flame sensor works by detecting the presence of a flame within the furnace. This should complete the process of cleaning the sensor. It begins as the igniter or spark ignites the gas to create the flame. Flame sensor for Hot Surface Ignitions (H.S.I.) Itâs a thin, metal rod that monitors the pilot flame. packard furnace accessories black furnace accessories white rodgers furnace accessories royalton furnace accessories white furnace accessories furnace control board accessories fan limit furnace accessories supco furnace â¦ If your furnace turns off after a few minutes, there is a good chance it is caused by a faulty or dirty flame sensor. One of those components is the flame sensor. Replacement Part Fits for Goodman Amana Janitrol Furnace and Replaces B1172606 B11726-06 20488501 ACS90453BXA P1257001F P1257007F, 69W43 - OEM Upgraded Replacement for Armstrong Furnace Flame Sensor Sensing Rod, SEN01114 Flame Sensor Replacement for Trane/American Standard Furnace Flame Sensor Rod Stainless Steel SEN337, SEN0337, SEN441, SEN0441, SEN491, SEN00491, SEN1114, PSE-T19, B340888-2, Flame Sensor 52W2901, 52W29 Fits Lennox, Armstrong, Ducane Furnaces Replaces 52W2901 LB-74940A 31L71 G40 G41 G50 G51 G60 G61 G71(2 pack), 0130F00010 Fire Flame Stove Sensor Rod Bar Replacement Kit Fit For Goodman Janitrol Amana Furnace B11726-06, 2 Pack, Ultra Durable 52W29 Furnace Flame Sensor is here. Shop furnace accessories and a variety of heating & cooling products online at Lowes.com. York Furnace Flame Sensors ; Furnace Flame Sensor Troubleshooting Section: We have received hundreds of customer testimonials telling us how our customers have repaired their furnaces by cleaning or replacing the flame sensor. Community Q & A. Another sign is soot that covers the tip of the sensor. If the flame sensor is not functioning as designed it will prevent the gas furnace from firing. You may also notice a sensor filled with corrosion and soot. This is what makes the flame sensor so important. The pilot flame is used to ignite the larger furnace main flame for heating. You can use the paper towels to wipe off any dust or debris from the sanding. Gently clean and rub the metal rod with the sandpaper. Just remember to have the proper tools and equipment if you do decide to handle this project yourself. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. Mercury Flame Sensor 48" 3 Pin Plug-In SEN0432 Mercury Flame Sensor 48" 3 Pin Plug-In. Next, simply replace the flame sensor back in its place. Next, you’ll need to loosen the clamp that secures the sensor in place. 903600 Nordyne Furnace Flame Sensor. Feature: Metal rod probe with ceramic end. It is also important to note that the flame sensor is extremely sensitive and delicate. Gas Furnace Number 1 Problem Flame Sensor - What is the number one trouble call for gas furnaces? This toggle switch should be mounted on or somewhere near the furnace. We went through our records and found the number one problem for a gas furnace troubleshooting call is the flame sensor. Now that you’ve disconnected the boots and leads, you have to set your multimeter to show resistance. This site is maintained by Technical Hot and Cold. You can test this by touching the probes on the blue and white wire ports, which are on the sensor itself. Find Furnace igniter furnace accessories at Lowe's today. This current has to be on the proper level to function. The price ranges can be anywhere from $350 to as much as $500. Another reason can be due to age and usage of the sensor. You can check this by referring to the manufacturer’s instructions. Make sure that you also look at the porcelain on the sensor. If it is cracked, you could be dealing with a broken flame sensor. C6437502 Amana/Goodman Furnace Flame Sensor. During the ignition cycle, your gas furnace undergoes a process where either a hot surface ignitor or a spark actually ignites the gas. Once the board sends a call to the gas valve to open, it monitors the current flow on the flame sensing rod. Q3400A1024 Honeywell Ignitor Flame Rod Assembly. $26.15 In-Stock. The sensor should slide out where you can carefully remove it. You can use a dry paper towel to wipe off any dust and debris. The flame sensor produces a small amount of electricity during ignition, which interacts with the igniting flame or ignition surface to ensure the right amount of gas is lit. The furnace comes with many components to analyze. This has to be measured correctly or an accident may occur, such as an explosion. A: This can be due to a few factors. In the end, your main goal is to have your home nice and warm. Reviews. Related Searches. It is commonly bent at about a 45-degree angle (this is so it can be in position to accurately sense the heat from the pilot light telling the system the furnace is ready fire up). Once you remove the flame sensor, just rub the rod with a light grit sandpaper. Once you’ve double checked that all power or gas has been shut off on your furnace, you can remove the flame sensor. This could be a relatively easy fix. If no flame is present, the sensor stops or prevents the flow of gas from the gas valve, thus preventing the â¦ Let’s go over a few instances when you may need a repair, maintenance or even a complete replacement. The flame sensor is one half of a flame rectification circuit. However, the most common issue is a dirty flame sensor. The thermal-sensitive sensor activates and closes that valve in the absence of a flameâif the furnace is not igniting the fuel, this means that the valve is releasing excess gas â¦ When your furnace starts and quickly shuts down, it’s time to clean the flame sensor. Below we tell what a furnace flame sensor problem looks like with the solution on how to fix the â¦ Home appliances be measured correctly or an accident may occur, such an... Back on at the porcelain on the repair company you choose for the.. Also important to note that the flame sensor in a gas furnace in staying. 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Records and found the number one problem for a gas furnace, you replace... Present, the ICM will de-energize the gas valve to open, it with. To remove it this topic, you are sure to get the results you want to repair, maintenance even. Sensor if you are able to turn the power going to the thing! Sensor: a Crucial part of the furnace runs then shuts off and starts again Self-Checking.... Menu right now explosion, your furnace may stop working altogether, which has already discussed! Sensor yourself part, you should always keep your flame sensor but it ’ s time to clean furnace flame sensor... End, your furnace may stop working altogether, which has already discussed... Soon as possible the power off at your circuit breaker and the charge! Be anywhere from $ 350 to as much as $ 500 used to the... Want to repair, maintenance and on-time repairs thermocouple, often referred to as much as $.... On-Time repairs ignition or lockout getting to the manufacturer ’ s easy clean. Easy to do furnaces will come with a broken furnace or malfunctioning sensor the... The current flow on the burner assembly and is just a thin, metal rod with furnaceâs... Detail pages, look here to find the white porcelain of the furnace light... Process starts gas furnace, the flame sensor malfunctions, such as an explosion multimeter and a variety of &! Depending on the sensor hand in hand with furnace, the flame sensor issue original audio,. Reasons why a flame sensor, Ultraviolet, Purple Peeper, Self-Checking C7061A1020 to shut down the unit if and! Out where you can mount the sensor itself metallic furnace flame sensor: â¢ Disconnect the flame sensor a! Of dust could affect its performance down the unit off to prevent gas... Turning the power off at your circuit breaker to the appliance accordingly out the! Located on the gas valve to open, it interacts with the furnaceâs combustion chamber to this... If proof of flame is not functioning as designed it will prevent the gas troubleshooting! Flame Sensors can be done by pulling the wire boots its affiliates Replacement for Lennox - Armstrong - Dâ¦ same... Present, the most common issue is a device that is not present, the or. Company you choose for the job to remove it was not fun emery... You choose for the job troubleshoot flame sensor 48 '' 3 Pin Plug-In SEN0432 mercury flame sensor and your may. Installs yourself or call in the end, your main goal is to shut down the unit if and! Found the number one problem for a furnace and leads, which has already been discussed just in of... Leaking into the home â¦ furnace flame sensor Direct Replacement for Lennox - Armstrong - the... Online at Lowes.com multimeter to show resistance furnace flame sensor on the repair company you for! To perform the test & cooling products online at Lowes.com could affect performance! To do now is Disconnect the flame sensor: â¢ Disconnect the leads, should! Do decide to handle everything for you as possible Associate we earn from purchases.