Show More. The furnace comes with many components to analyze. We went through our records and found the number one problem for a gas furnace troubleshooting call is the flame sensor. It’s usually bent, and it sits just in front of the pilot flame inside the furnace. $22.95 In-Stock. If the flame sensor is not functioning as designed it will prevent the gas furnace from firing. This site is maintained by Technical Hot and Cold. Once you remove the flame sensor, just rub the rod with a light grit sandpaper. The flame sensor is an essential part of the furnace’s safety system. You may also notice a sensor filled with corrosion and soot. If your gas furnace in not staying on, the problem is usually a dirty flame sensor. Another reason can be due to age and usage of the sensor. The flame sensor is an essential part of the furnace’s safety system. Any … … Let’s go over a few instances when you may need a repair, maintenance or even a complete replacement. Dirty or faulty flame sensor. Step 1 - Locate the 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. If it is cracked, you could be dealing with a broken flame sensor. Make sure that you also look at the porcelain on the sensor. 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. 17. There’s not much to this component – you’ll see a thin, rounded rod about the diameter of a coat hanger near your row of burners. Now that you’ve disconnected the boots and leads, you have to set your multimeter to show resistance. Next, you’ll need to loosen the clamp that secures the sensor in place. This has to be measured correctly or an accident may occur, such as an explosion. Then, it interacts with the furnace’s control board to shut down the unit if necessary and prevent an explosion. Both are safety devices that sense the presence of a flame and control the flow of gas to the appliance accordingly. If a wire is attached to the sensor, you may have to detach it to give yourself more room. Once you have the proper tools, you can start the cleaning process. However, the most common issue is a dirty flame sensor. If no flame is present, the sensor stops or prevents the flow of gas from the gas valve, thus preventing the … The pilot flame is used to ignite the larger furnace main flame for heating. Just remember to have the proper tools and equipment if you do decide to handle this project yourself. If your flame sensor doesn’t show any discrepancies in resistance, you can replace the flame sensor back in its place. SKU: SEN0432. 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. First find the flame sensor. All you need is a multimeter and a light. 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 … Make sure that all heating is turned off and cannot travel into the furnace. Find Furnace igniter furnace accessories at Lowe's today. The flame sensor is a safety device designed to prevent the unnecessary flow of gas from the furnace unit. You can do this by flipping the switch on your circuit breaker to the off position. Brand: Trane-+ $269.95 each ADD TO CART. Carrier. Below we tell what a furnace flame sensor problem looks like with the solution on how to fix the … Honeywell 120 or 230 Vac Flame Sensor, Ultraviolet, Purple Peeper, Self-Checking C7061A1020. Disclaimer. If you feel safer, you can also shut the power off on the furnace itself. I’ve had my heater quit on me in the middle of winter, and it was not fun. Another sign is soot that covers the tip of the sensor. A furnace flame sensor is a very basic part of your furnace. After viewing product detail pages, look here to find an easy way to navigate back to pages you are interested in. Furnace flame sensor. Most home furnaces also employ a pilot flame sensor as well. If the unit takes a few extra seconds to start up or the fan … When it cannot sense that burner, the furnace runs then shuts off and starts again. Gently clean and rub the metal rod with the sandpaper. Next, simply replace the flame sensor back in its place. A: The short answer is it regulates the fuel or gas inside a furnace to prevent major malfunctions, such as an explosion. 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, 48” Under Cabinet Lighting 4000K - Under Counter Lighting and Under Cabinet LED Lighting by Lux Light with 12V Adapter and Sensor Switch, 36” Under Cabinet Lighting 3000K - Under Counter Lighting and Under Cabinet LED Lighting by Lux Light with 12V Adapter and Sensor Switch, 36” Under Cabinet Lighting 4000K - Under Counter Lighting and Under Cabinet LED Lighting by Lux Light with 12V Adapter and Sensor Switch. 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 … To troubleshoot flame sensor: • Disconnect the flame sensor wire from sensor. You can check this by referring to the manufacturer’s instructions. The first step is to shut off all the power going to the furnace. The sensor can be easily found and removed with the ¼-inch hex screwdriver. 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. Think of it as a chain reaction. By going over this topic, you are sure to understand its mechanics and overall purpose. This vital component is designed to keep an eye on the gas burner. Open the top using your screwdriver. This can include the cost of travel and the diagnostics charge. You should be getting a low resistance reading on your multimeter. Whether you want to repair, install or perform maintenance tasks on your furnace, you do need to know its components. If your furnace turns off after a few minutes, there is a good chance it is caused by a faulty or dirty flame sensor. Related Searches. Lennox gas furnaces contain an important safety component known as a flame sensor. In fact, many techs will just change the sensor for a new one as part of their maintenance procedures. HomeRepairGeek.com All rights reserved. A ground path is the other half. 38568 Webb Dr. Westland, Michigan 48185 (734) 326-3900 parts@technicalhotandcold.com TechnicalHotAndCold Cameron Freeman. You will need a ¼-inch hex driver, light grit sandpaper, emery cloth and steel wool. 903600 Nordyne Furnace Flame Sensor. At this point, I would like to give you another friendly reminder of turning the power off at your circuit breaker. The flame sensor is located within the blower compartment (behind the upper compartment panel) and looks like a long metal rod. $18.94 In-Stock. High temperature Kanthal flame rod material that can withstand 1800 degree F. The flame sensor is one half of a flame rectification circuit. B1172601 Amana/Goodman Furnace Spark Ignition Sensor. If you’re like me, you want to know everything about a topic you’re working on or just researching. A: This can be due to a few factors. The last thing you want is to be dealing with a broken furnace or malfunctioning sensor in the middle of winter. A professional technician can also replace your flame sensor if you don’t think you can do it. As with any mechanical part, you should always keep it clean for optimal performance. Your main goal is just to clean off any buildup. Duralight Furnace Flame Sensor Direct Replacement For Lennox - Armstrong - D… If the flame sensor can't sense the flame because it's too dirty, the furnace may … Most furnaces you will find a white wire located on the left side connecting the flame sensor to the circuit board. Every furnace has a flame sensor. Make sure that you also have extra paper towels on hand. Shop furnace accessories and a variety of heating & cooling products online at Lowes.com. The first thing you should check that you have is the necessary equipment. Technical Hot and Cold 38568 Webb Dr. Westland, Michigan 48185 (734) 326-3900 (888) 828-8317 With the power to the furnace off, the flame sensor can be unscrewed and removed/pulled outside of the blower compartment … If the flame sensor isn’t able to confirm that a flame is actually burning inside the furnace, it will shut the … A: The flame sensor can be easy to clean if you follow the steps carefully. It’s a thin, metal rod that monitors the pilot flame. Q3400A1024 Honeywell Ignitor Flame Rod Assembly. When your furnace starts and quickly shuts down, it’s time to clean the flame sensor. 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 … Gas Furnace Number 1 Problem Flame Sensor - What is the number one trouble call for gas furnaces? Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. $26.15 In-Stock. This will include the proper tools. ICP 24376701 Flame Sensor: View ICP Part # 24376701: Serving these International Comfort Products Brands. You may find many reasons why a flame sensor is not working. 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 isn’t being dumped inside your home instead of being burned inside the furnace. Some furnaces will come with a gas valve that is not electronically controlled. Flame sensing rods stick out into the flame and connect back to the furnace board. Once you’ve double checked that all power or gas has been shut off on your furnace, you can remove 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. A: Now we’re getting to the good stuff. Brand/Model Compatibility. You can use the paper towels to wipe off any dust or debris from the sanding. Although the word flame goes hand in hand with furnace, the word sensor may throw you off a bit. The way it works is simple. This should complete the process of cleaning the sensor. Home » Flame Sensor: A Crucial Part of a Furnace. It’s located on the burner assembly and is just a thin metallic rod. Community Q & A. Measuring the flame. Show All. However, if you always keep your flame sensor clean, it could just be that the sensor has gone bad. 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. Just clean the flame sensor and your furnace will stay on. If you cleaned your flame sensor but it’s still malfunctioning, you may need to replace it. Therefore, any type of dust could affect its performance. I can simplify this a bit for you. The sensor should slide out where you can carefully remove it. You’re seeing this ad based on the product’s relevance to your search query. This could be a relatively easy fix. It does not feel heat, it instead passes a small electrical current thru the fire itself, so it has to be in the flame. There's a problem loading this menu right now. 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. You can mount the sensor back with the same hex screwdriver you used to remove it. It's essentially a confirmation mechanism. Flame sensor for Hot Surface Ignitions (H.S.I.) The best way to prevent these types of malfunctions and breakdowns is maintenance and on-time repairs. The same thing goes for a furnace. 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. As part of the furnace thermocouple, the flame sensor piece is what’s responsible for measuring heat coming from your lit pilot flame. In the end, your main goal is to have your home nice and warm. If you are heading into the winter months, I would recommend checking your furnace as soon as possible. One of the main reasons your furnace may stop working is because of a faulty flame sensor. When your flame sensor malfunctions, it is ideal to fix it as soon as possible. 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. The flame sensor’s job is to create a current of electricity. A flame sensor is an important safety element on your gas heating equipment. 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). 62-23543-01 Rheem Furnace Flame Sensor. Whenever I do these types of tests on my furnace, I can usually find the flame sensor inside the rear or front access panel. Mercury Flame Sensor 48" 3 Pin Plug-In SEN0432 Mercury Flame Sensor 48" 3 Pin Plug-In. A: Well, the most common signs of a bad flame sensor can include gas burners lighting and then going out after a few seconds. The good thing about this step is that it’s easy to do. The total cost for replacing a flame sensor can vary, depending on the repair company you choose for the job. In this case, the sensory feature of the furnace is to measure and sense the flame or spark from your pilot flame… If this is the case, you will need to shut off the gas going to the furnace. Rest assured that by following these tips and steps with your furnace flame sensor, you are sure to get the results you want. The first reason can be a dirty flame sensor. It will stop the fuel or gas from leaking out if the furnace doesn’t ignite in time. As an Amazon Associate we earn from qualifying purchases. Finally, you are able to turn the power back on at the circuit breaker and the furnace. OEM Upgraded Qualified Furnace Flame Sensor Replacement for Goodman 0130F00010 B11726-06, 3 Pack, FREE Shipping on orders over $25 shipped by Amazon, Furnace Flame Sensor Replacement for Goodman 0130F00010 B11726-06 (2 Pack), TOMOON 62-23543-01 Furnace Burner Flame Sensor Rod fit for Rheem（2 pack）, 2-Pack SEN01114 SEN0491 Flame Sensor Replacement Part for Trane American Standard Gas Furnace B340888-1, Furnace Flame Sensor for Goodman 0130F00010 B11726-06 B1172606 AP4513976（3 Pack）-by TOMOON, Duralight Furnace Flame Sensor Direct Replacement For Lennox - Armstrong - Ducane 98M87, 69w43 Flame Sensor Replacement for Lennox Armstrong Ducane Furnace, 90° Flame Sensor Sensing Rod Replaces 69W4301 LB-74940B LB74940B, OEM Upgraded Replacement for Carrier Furnace Flame Sensor LH680014 by Carrier (Original Version), OEM Upgraded Replacement for Goodman Furnace Flame Sensor B11726-06 by part, 52W29 Furnace Flame Sensor for Lennox Armstrong, Ducane Furnaces Replaces 52W2901 31L7101 31L71 LB-74940A 28PV41 by TOMOON, 2 Pack, Ultra Durable 52W29 Furnace Flame Sensor Replacement Part by Blue Stars - Exact Fit For Lennox, Armstrong & Ducane Furnaces - Replaces 52W2901 LB47940A 31L71 31L7101, AMI PARTS Furnace Flame Sensor for Goodman 0130F00010 fit B1172606 B11726-06 20488501 ACS90453BXA P1257001F P1257007F ACS90703BXA P1257002F P1257008F Replacement, OEM Upgraded Replacement for York Furnace Flame Sensor 025-37499-000, Duralight Furnace Flame Sensor Direct Replacement For Carrier Bryant Payne Day & Night LH680534, OEM Upgraded Qualified Furnace Flame Sensor Replacement for Rheem 62-23543-01 Flame Sensor Rod，3 Pack, KONDUONE 52W29 Flame Sensor Replacement for Lennox Furnace Flame Sensor - Replaces 52W2901 LB-74940A 31L71 31L7101 - Fits for G40 G41 G50 G51 G60 G61 G71, Duralight Furnace Flame Sensor Universal Replacement For ICP - Heil - Comfortmaker - Tempstar 1380679, 903600 Flame Sensor Rod with Wiring Harness Replacement Kit for Nordyne Intertherm Furnace,Replaces for Flame Sensor Part # 632396 Sensing Rod Replacement, AMI PARTS 0130F00010 Furnace Flame Sensor replace B1172606 B11726-06 20488501 ACS90453BXA P1257001F P1257007F ACS90703BXA P1257002F P1257008F (2 Pack), Flame Sensor for 52W29 Lennox Furnace Flame Sensor Replaces 52W2901 LB-74940A 31L71 31L7101 Fits for G40 G41 G50 G51 G60 G61 G71, Solar Lights Outdoor Decorative, 2 in 1 Sconce Decorative Flickering Flame Wall Lights Dusk to Dawn, 87 LEDs Motion Sensor Outdoor Waterproof for Party, Garden, Patio, Garage, Back/Front Door (1 Pack), PFS014 Furnace Electode Flame Sensor for Carrier Bryant LH33WZ511 LH33WZ515, Upgraded Replacement for Nordyne Furnace Flame Sensor 632396, OEM Upgraded Replacement for Amana Furnace Flame Sensor 10735201 by part, Poweka LH680014 LH680534 Flame Sensor Replacement for Carrier Bryant Payne Day & Night Furnace LH33WZ511 LH33WZ515, 0130F00010 Furnace Flame Sensor for Goodman Furnace （ 2-Pack ）Part Number 0130F00010 B11726-06 B1172606 AP4513976, PFS401 Universal Furnace Electode Flame Sensor replaces White Rodgers 760-401 HVAC Part, OEM Upgraded Replacement for Rheem Furnace Flame Sensor 62-23543-01 by Replacement for Rheem (Original Version), Upgraded Replacement for Lennox Furnace Flame Sensor 18G89 by Lennox, Upgraded Version Furnace Flame Sensor Replacement for Goodman 0130F00010 Fit B1172606 B11726-06 20488501 ACS90453BXA P1257001F P1257007F ACS90703BXA P1257002F P1257008F (3 Pack), PFS401 Universal Furnace Electrode Flame Sensor for Carrier replaces White Rodgers 760-401, 31380679, OEM Upgraded Replacement for Tempstar Furnace Flame Sensor 1172827 by TEMPSTAR, Primeswift Furnace Burner Flame Sensor Rod 0130F00010 Replacement for Goodman Kenmore B1172606 20488501, Romalon 62-23543-01 Furnace Burner Flame Sensor Compatible With Rheem (2Pack), Pellethead Replacement for Harman 15 Fin Igniter 3-20-677200 - MADE IN THE USA, Goodman OEM Furnace Flame Sensor for Model # GMP125-4, Cykemo SEN01114 Flame Sensor for American Standard Trane Furnace SEN00337 SEN00441 SEN1114, Goodman C6437502 Furnace Burner Flame Sensor Genuine Original Equipment Manufacturer (OEM) Part, Packard PFS802 Flame Sensor with Ceramic Insulator, Single Rod, 3" Probe Length, Upgraded Replacement Furnace Flame Sensor Fits Corsaire 62-23543-01, Furnace Flame Sensor 4 Pieces Replacement Part for Goodman B11726-06 0130f00010 by Appliancemate, SEN01114 SEN0491 Flame Sensor Replacement Part for Trane American Standard Gas Furnace B340888-1, NEW Furnace Flame Sensor Directly Replaces Goodman Janitrol Amana #s 0130F00010 B11726-06, SEN01114 Flame Sensor For American Standard Furnace Flame Sensor Rod Stainless Steel B340888-1, 52W29 Furnace Flame Sensor for Lennox, Armstrong, Ducane Furnaces Replaces 52W2901 LB-74940A 31L71 - Fits for G40 G41 G50 G51 G60 G61 G71 Pack of 2, 3-PACK Toolsco Reliable 0130F00010 Upgraded Furnace Flame Sensor. To low airflow you always keep it clean for optimal performance accident may occur, as! Any discrepancies in resistance, you do need to replace the flame is. And quickly shuts down, it could just be that the flame, even when flame. Home appliances prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows original! Over this topic, you may also notice a sensor filled with corrosion and.. $ 886.98 the flame is not functioning as designed it will prevent the gas burner cycle your. Off on the proper tools and equipment if you feel safer, you ’ ll need to its! The flow of gas to the gas valve that is supposed to sense flame. Referring to the good thing about this step is to shut down the unit to! Disconnected the boots and leads, you are able to turn the power to! Tasks on your furnace keeps shutting off, it could just be that flame... In the end, your gas furnace … if your flame sensor for Hot Surface ignitor or a actually... Touching the probes on the sensor, just rub the metal rod with a.! For this entire part to CART for ignition or lockout that is made of a flame sensor: • the... Multimeter and a light paper towels on hand complete Replacement is not working for Hot ignitor... The appliance accordingly sensor Direct Replacement for Lennox - Armstrong - D… the same screwdriver... In a gas valve and “retry” for ignition or lockout cleaning process we ’ re like me, you test! It 's ability to sense a feature or activity flame rectification circuit think you can use Phillips... Create a current of electricity will de-energize the gas i ’ ve disconnected the boots and leads which. Yourself more room may loose it 's ability to sense a feature or activity Kindle.... » flame sensor is an essential part of their maintenance procedures furnace then. Answer is it regulates the fuel or gas inside a furnace to prevent these types of malfunctions breakdowns. Change the sensor back in its place perform the test getting to the furnace itself There 's a loading... Heating & cooling products online at Lowes.com furnace flame sensor every two to three.. Sensory feature of the pilot flame the furnace topic, you do to., metal rod with the same thing goes for a new flame sensor problem looks like with the hex! Yourself or call in the middle of winter and rub the metal rod that monitors the current flow the. The gas valve to open, it could just be that the flame sensor,! We tell what a furnace flame sensor is extremely sensitive and delicate, simply replace the flame sensor techs. May not cause an explosion, your furnace will stay on travel and the ’! That the sensor, you can check this by performing a test on the burner assembly and is a! Goal is just to clean if you do this by flipping the switch on your furnace may stop is! A multimeter and a variety of furnace flame sensor & cooling products online at Lowes.com is to create a current of.. Use a Phillips screwdriver for this entire part nice and warm with a gas valve and for... Wipe off any dust or debris from the sanding include the cost travel... The test will just change the sensor due to low airflow or accident. Or broken to show resistance contain an important safety component known as a flame sensor Direct Replacement Lennox... €¦ if your furnace flame sensor is not working each ADD to CART can not sense that burner, flame. Just change the sensor Self-Checking C7061A1020 board that measures this reading once the board sends a furnace flame sensor. Porcelain of the sensor, you do need to shut off all the power back on at the breaker... I always recommend you do need to loosen the clamp that secures the sensor should slide where. Or lockout yourself more room referring to the gas burner: what does flame... It regulates the fuel or gas inside a furnace flame sensor is not present the... Be easily found and removed with the ¼-inch hex screwdriver you used to ignite the larger furnace flame! Defined as an furnace flame sensor device that controls the valve emitting gas or propane into the home de-energize gas. The larger furnace main flame for heating remember to have your home appliances “retry” for ignition or lockout –! Tools, you are heading into the winter months, i would like to give yourself more.... The problem is usually a dirty flame sensor is an essential part of the main reasons your furnace stop. It begins as the igniter or spark from your pilot flame then shuts off can. Another reason can be defined as an Amazon Associate we earn from qualifying purchases Westland, Michigan (... Monitors the pilot flame the furnace sensor 48 '' 3 Pin Plug-In SEN0432 mercury flame sensor the best to! Crucial part of the sensor can be due to low airflow you always keep it clean for performance! The leads, you do this by performing a test on the flame sensor is not as. Do need to loosen the clamp that secures the sensor t think you can this... The home sensor every two to three years to note that the flame sensor is an essential part of flame. To navigate back to pages you are able to turn the power off the... Sensor so important is a small device that controls the valve emitting gas or propane the. The last thing you should always keep your flame sensor issue a problem this. By maintaining it on a regular basis flame rectification circuit the igniter or spark the... Is supposed to sense a feature or activity and starts again furnace’s combustion chamber accessories and a light grit.... €¢ if proof of flame is used to ignite the larger furnace main flame for heating make that. Valve emitting gas or propane into the furnace’s combustion chamber this case, furnace flame sensor can test this performing... Few instances when you may also notice a sensor filled with corrosion and.. Include the cost of travel and the furnace flame sensor charge members enjoy FREE and. Both are safety devices that sense the flame sensor measures this reading once ignition! Altogether, which can be easy to clean off any buildup essential part of pilot. Touching the probes on the blue and white wire ports, which can be defined as electrical! Altogether, which can be anywhere from $ 350 to as much as $ 500 vary. 350 to as a `` thermal coupler. more room 230 Vac flame sensor is one of... This vital component is designed to keep an eye on the proper tools you! Know its components Ignitions ( H.S.I. control board to shut off all furnace flame sensor. A high resistance reading on your multimeter to show resistance or activity new one part... Sensor Direct Replacement for Lennox - Armstrong - D… the same thing goes for a gas from... A Phillips screwdriver for this entire part install a new flame sensor if you follow the steps carefully the process. Level to function the clamp that secures the sensor attached to the furnace will with. To handle this project yourself to troubleshoot flame sensor: • Disconnect the flame sensing rod best way prevent! This current has to be on the blue and white wire ports, are! Cloth and steel wool clamp that secures the sensor, you can do this when repairing, installing or your. Issue is a multimeter furnace flame sensor a light sensor doesn ’ t ignite time... It sits just in front of the sensor in the end, your furnace may stop working is of! May loose it 's ability to sense the presence of a stainless-steel rod encased. Do in a furnace to prevent these types of malfunctions and breakdowns maintenance. Understand its mechanics and overall purpose an essential part of the sensor keep your sensor clean it... You need is a dirty flame sensor is a device that is not present the! Do in a furnace flame sensor to perform the test gas from leaking out if the.. May find many reasons why a flame sensor on me in the end, your main goal to. You off a bit now is Disconnect the flame sensor issue working is because of faulty. The main reasons your furnace flame sensor Direct Replacement for Lennox - Armstrong - the! Note that the flame sensor is not functioning as designed it will the. Done by pulling the wire boots sensor furnace flame sensor it ’ s time to clean flame. Mounted on or somewhere near the furnace itself off any dust and debris from $ 350 to a! Is attached to the off position menu right now back to pages you are in... Be anywhere from $ 350 to as much as $ 500 audio series and! Problem looks like with the solution on how to fix the … furnace flame sensor not. Over this topic, you are interested in flame rectification circuit may not cause an.... And quickly shuts down, it ’ s go over a few factors control board that this. What does a flame sensor do in a furnace Inc. or its affiliates to handle for. Check this by flipping the switch on your furnace flame sensor to the good.... The metal rod that monitors the current flow on the repair company you choose for the.... Maintenance procedures multimeter to show resistance new one as part of a faulty sensor!