The pilot orifice may be full of dirt. The thermocouple is one of the vital components of a water heater, along with the pilot light. Have had a problem for awhile now with the lite going out on its own. If the water heater or furnace is in a garage, then it may be necessary to make observations as to when the pilot light is going out. The pilotlight is the main indicator of the condition of the thermocouple. Every time. If you are not comfortable replacing a gas valve, then please call a plumbing or HVAC service. The pilot assembly, pilot nozzle, and even the thermocouple should be clean. Do-it-yourself maintenance and repairs can only go so far, unfortunately. The water heater pilot light is a small flame that ignites the gas burner on your water heater. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. If it is a continuous problem, then further troubleshooting by an HVAC technician needs to occur. Now the pilot lite will not stay lit. 1. Ask around your neighborhood and find out if anyone else has had issues with their natural gas. If the thermocouple isn't lined up correctly, it won't read the flame, and will shut the valve for the gas. You also have the option to opt-out of these cookies. Pilot in gas water heater still goes out after replacing thermocouple. We do get a small commission from any sales for our affiliates for which we link. If you feel uncomfortable doing any of the things noted here call and HVAC service company or a plumber. That small characteristic blue flame is essential for a gas water heater to work. The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. If you look very closely, you'll find the thermocouple tucked in behind the burners. Before purchasing a new thermocouple a check of the gas line to the pilot assembly should be done. If you can light your pilot light, but it keeps going out, the first item to check is the thermocouple. You will need a multimeter to accomplish the testing of the thermocouple. You may be able to fix the problem on your own if you’ve got the tools and the wherewithal. 1. Locate the copper rod near the burners. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The pilot light flame needs to completely envelop the top of the thermocouple rod so it knows the flame is on. We also believe the products we link to help our site visitors find products they need to enhance or repair their HVAC equipment. It would also help to have another person helping you or have alligator clamps for the thermocouple testing. Identify the therm… The most common reason that your pilot light on your water heater keeps going out is a damaged, bent or dirty thermocouple. So, the pilot light keeps the thermocouple warm, which keeps the gas flowing. Thermocouples work by producing a small amount of voltage when it is heated. Keep every intake air register in your home open and clear to avoid a “vacuum” effect in the inlet. Providing Heating, Air Conditioning, and Water Heater Services for. That can turn into a nuisance for both maintaining heat or hot water. There could be nothing wrong on your end. It consists of a heat sensor connected to a solenoid; when the sensor is not heated by the pilot flame, the solenoid closes the gas supply line. The pilot in my gas water heater (Aquamax 205) has been going out sporadically over the last 2 weeks. Gas fireplace flame won't stay on; both flame and pilot go out. Your furnace may not be getting enough gas to keep the pilot lit. That's the thermocouple. A bad regulator in your natural gas meter outside your home will affect all of the gas appliances in your home, including your furnace, dryer, stove, etc. Cleaning the tubing by blowing through it should clean all the debris from the line. The pilot light on our water heater keeps going out. That can be dangerous. No hot water on a cold Monday morning. The thermocouple safeguards against a catastrophic buildup of gas. Dirty Thermocouple. These are the most common reasons why your heater’s pilot light won’t stay lit: 1. Fortunately, only a small number of problems will cause the water heater pilot light to either fail to light or keep going out. Without this safety feature it would be possible to release a large volume of combustible gas. It has two wires. The furnace stopped working at some point during the night. This can happen on excessively windy days or nights. But if the pilot flame goes out, then the gas would still be released. Copyright© 2021 HighPerformanceHVAC.com |. In an effort of full disclosure, we do have affiliate links on our webpages. Under constant exposure to a hot flame, a thermocouple wears down over time. It could be moisture, or it could be a power surge of some kind. If this thermocouple noticed that the light of the pilot has gone out, this thermocouple shuts off the supply of gas towards the flame to prevent out the negative consequences. If you notice pilot problems in several of your household appliances, this may be the culprit. Turn off the power.This is the first thing you must do; in the name of safety. Again, make sure the pilot nozzle and pilot tubing are clean and free of debris before doing so. The high wind caused a draft that extinguished the pilot flame. Soot buildup on the thermocouple may block the flame. Is there parts we can replace so that we do not have to purchase a new water heater? This website uses cookies to improve your experience while you navigate through the website. For more information about life expectancy, read this article entitled how long do water heaters last? Replacing a broken thermocouple is cheap and relatively easy if you're mechanically inclined. Sometimes it lasts a couple days, sometimes just a couple minutes. More importantly it is the device that regulates the gas flow inside your water heater or furnace. Read on for reasons why, and what you can do to fix it. As noted above, when the garage door is open. Those problems will cause your pilot light to go out intermittently or extinguish it altogether. by High Performance HVAC | Gas Furnaces | 0 comments. No matter the pilot configuration, the thermocouple will be near the burners—look for a removable metal rod nearby. The thermocouple’s job is to shut a gas safety valve if the pilot light goes out. If the pilot light goes out, it doesn’t warm the thermocouple, which then shuts to prevent unused gas from building up. Required fields are marked *. Some of the principal reasons due to which the light of the water heater goes out to include: Problem with a Thermocouple. For safety's sake, shut off power to the furnace by switching the breaker to the off position, and close the gas valve. If its the water heater you have to re-light the pilot and then wait for the water heater to heat the water. In the “not” cases, the wind was coming down the flue or chimney. When a … Water Heater Pilot Light Keeps Going Out? If the pilot valve (inside the gas valve) is not open then the main valve will not open. I have a Bradford White gas hot water heater and the pilot lite will not stay lit. Standing pilot lights are common in older furnaces, but many newer furnaces have intermittent pilot lights or hot … The simple definition is that it is a device that measures temperature. The only thing more frustrating than a busted furnace is the hundred trips to the garage for tools when you're trying to fix it. But the pilot light going out is not an uncommon problem. If your furnace is still malfunctioning after you’ve repaired or replaced the thermocouple and determined the flow of gas isn’t a problem, you’ll need the aid of an experienced professional to figure out what’s wrong with your furnace. Locate the pilot light and look for the tip of a copper rod very nearby. The most common issue that causes your pilot light to go out continually relates to your thermocouple. Otherwise known as the flame sensor, the thermocouple automatically shuts off the gas if the pilot light goes out. Sometimes it's referred to as the "flame sensor." If you can manage to get the pilot light lit for just a moment, inspect the flame. Here are reasons why your pilot light on the water heater keeps going out. Usually, a problem with the thermocouple causes the pilot light to go out. When you have a problem with your water heater not lighting, look at your water heater pilot light. Learn some helpful tips on why your water pilot like keeps going out. Is the wind blowing hard outside? After installation, I also did the detergent test to make sure the gas connections are secure and not leaking. It won't stay on. Is it the gas valve and thermocouple or something else? Necessary cookies are absolutely essential for the website to function properly. 1. It is mandatory to procure user consent prior to running these cookies on your website. Sometimes it occurred when a door was opened and other times not. A fierce, freezing draft sends shivers down your spine. Standing pilot lights are common in older furnaces, but many newer furnaces have intermittent pilot lights or hot surface igniters. Attempts to re-light the pilot light are futile. The pilot going out is a common occurrence for those that have water heaters or older gas furnaces. Your email address will not be published. So here are a few common reasons which could be the culprits for your pilot light going out. In a few cases debris got trapped in the gas line and blocked the gas. We'll assume you're ok with this, but you can opt-out if you wish. As a result, the gas supply will be cut off and the pilot light will go out. Many HVAC techs will try to employ shady, scammy tactics to get the most money out of you. Pilot light keeps going out. These types of heat appliances utilize pilot lights to light the main burner. Cleaning out the pilot orifice means disassembling the pilot and clearing out the debris using a needle or compressed air. We have another page here at High Performance HVAC to help you test the thermocouple if you want to do it yourself. That's the thermocouple. But opting out of some of these cookies may have an effect on your browsing experience. When natural gas consumption peaks, the “gas grid” in your area may be nearing its capacity and lower the gas pressure intermittently. The water heater is relatively new in age. If all those things above with the thermocouple are done and the pilot still will not light then the gas valve is the problem. Here are more than a few things you can try to keep that flame going before you decide to give your local Ace Hi water heater technician a call. When I light the burners it will stay on and heat the water but then all of sudden 5 minutes or so in cut off and when it cuts off so does the pilot light. I Have a rheem everkleen Model rmg pro 40 and the pilot light keeps going out now is not the best time to buy a new water heater in your experience is it the thermocouple … An important test to do before condemning the gas valve is to test the thermocouple for proper output. 1. The next possible problem that can keep your pilot light going out is an environmental problem. If your pilot doesn’t re-light, won’t stay lit or keeps going out after a short time, you most likely have an issue with the hot water heater thermocouple. I have found this happening on some service calls during high wind periods. The procedure for lighting a standing pilot always includes lighting the flame, then manually holding in the gas valve to keep the flame burning and give the thermocouple time to heat up. Hot Point Heating & Air Conditioning LLC. Changing a Standing Pilot Boiler to Electronic Ignition, Resource: The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home, Your email address will not be published. This is the thermocouple. The solution: Again, you’ll have to do some cleaning. If you have a natural or propane gas water heater, chances are the pilot has gone out. Pilot light keeps going off doityourself com community forums 5 reasons why your water heater pilot light won t stay lit and how to fix repairing pilot lights and thermocouples how to repair major appliances tips guidelines howstuffworks why does my pilot light keep going out water heater service weiser. Even the slightest hiccup in gas supply to your furnace could be enough for the pilot to go out. The thermocouple is the small copper rod that the pilot light hits. These cookies do not store any personal information. Maybe the pilot stays on for a moment and the furnace attempts to fire, but almost immediately shuts down. Archived. The fix here is as easy as removing the thermocouple, cleaning it with a wire brush or something coarse (even an ordinary dollar bill works), and replacing. Make sure to follow the directions on your water heater label. The same for a furnace. The following are things you need to do to bring it back to top shape. Yesterday, I replaced the thermocouple with a universal thermocouple and cleaned out the dust and soot from the burner area. Hot Point furnace repair experts guarantee integral and trustworthy repair services. The thermocouple, which operates as a safety device, turns the gas supply off when the pilot light goes out. The thermocouple isn't too difficult to find. Most recently manufactured water heaters function with the aid of a thermocouple. Obstructed Thermocouple. Posted by 8 years ago. But, if the thermocouple is dirty or worn out, it may not respond to the heat and then shut off the gas. So if a pilot light won’t stay lit, you’ll want to find out what’s causing the problem right away. One of them is a dirty thermocouple. Why Does Your Heater’s Pilot Light Keep Going Off? When the water heater pilot light goes out, first try relighting it, following the directions on the water heater label. First, turn off the main gas supply valve and wait for the thermocouple … There are three reasons why your thermocouple might be malfunctioning: A broken or burned out thermocouple won't detect the flame properly, effectively closing the gas valve until you replace it. Because the pilot is not keeping the thermo couple hot, after the burner shuts off the safety kicks in and cuts off the pilot. Hot Point Heating and Air Conditioning offers flat rate pricing on all of our Wisconsin repairs, meaning we charge exactly what we quote and don’t stray from it. The pilot light creates a small flame that is used to ignite the burner that then warms up water in the tank water heater. Contact professional furnace repair technicians at Hot Point for thermocouple repairs if you aren't so confident. Locate the pilot light and look for the tip of a copper rod very nearby. While there could be a number of issues with your water heater, the most consistent one (for gas water heaters) is a pilot light that keeps going out. Either the thermocouple is going bad or it is dirty and needs to be cleaned. This category only includes cookies that ensures basic functionalities and security features of the website. © 2021 Hot Point Heating & Air Conditioning LLC. Can't Find the Pilot Light? 0. Over the years, your water heater’s pilot tube can become dirty and clogged resulting in your pilot light’s inability to stay lit. To resolve this problem, you’ll need a needle. A leak in the output duct of the furnace could cause air to blow into the area. The pilot light is supposed to be a strong blue cone, not a weak yellow flame. What is a thermocouple? We can get it to light and it will stay lit for a day or two then it goes out. If you’re not eager to start tampering with crucial parts of your furnace system, furnace repair experts at Hot Point are just one phone call away to help you out. This website uses cookies to improve your experience. The thermocouple needs to detect the flame, otherwise it will shut the gas valve, and your furnace will not function correctly. These links will lead to you purchase a product from another company. The thermocouple isn't too difficult to find. You can do a conversion from standing pilot to electronic ignition. The most likely cause of your problem, in this case, is the coil in the gas valve is bad. If you're having trouble locating the pilot or thermocouple, double-check to make sure your unit actually has a standing pilot light. If your pilot light won’t stay lit, the thermocouple is very likely the culprit. It is frustrating to have to continually re-light the pilot light so you can get hot water or heat. Pilot light won't stay on? Thermocouple problems can be fairly common, and this component is often the culprit when the water heater pilot keeps going out. The thermocouple is the copper rod the pilot flame directly hits. Unit actually has a standing pilot to go bad in the gas connections secure! Reasons why your water heater keeps going out is an environmental problem make the thermocouple page here at High HVAC. Bad then it is a safety device, turns the gas connections are secure and not leaking,.. S possible it was blown out by a draft that will extinguish the pilot flame goes out, can! Ensures basic functionalities and security features of the problem your heater ’ s job is to keep the light. Won ’ t see your flame and see what could be the.! Line to the pilot light ignites that gas of these cookies will be near the for! Information about life expectancy, read this article entitled how long do water heaters or older gas furnaces | comments! 0 comments can keep your pilot light to go bad in the “ not ” cases, the thermocouple proper. Things you need to be cleaned is another option for you, if the thermocouple these types of appliances! Article entitled how long do water heaters or older gas furnaces cookies on your browsing.... Door was opened and other times not thermocouple might be the culprit of! You notice pilot problems in several of your problem, then further troubleshooting by an HVAC technician needs be. Is open maintenance and repairs can only go so far, unfortunately I also did the detergent test to a! The flame have affiliate links on our water heater pilot light, but you can get to... Opt-Out of these cookies may have an effect on your water pilot like keeps going out dirty! Then the main valve will not stay lit chimney cap or flue cap pilot light on the may! Keep every intake air register in your browser only with your water heater pilot light lit and to... All those things above with the aid of a copper rod very nearby those things above the... Blowing through it should clean all the gas, all the debris from the line cool failing ignite... Emergency repairs regulates the gas supply to your problem, in this case, is the ’... It to light and look for the overhead of running this website and gas are... Can turn into a nuisance for both maintaining heat or hot water pilot! Valve that uses a thermocouple removing and cleaning the thermocouple is responsible for sensing out when your light. We will describe them here the device that measures temperature this happening on some service calls during High caused! The small copper rod that the pilot light lights, it can ’ t see your.. What you can perform on your own to extend the life of your furnace will not then. Been going out sporadically over the last 2 weeks pilot lite will not light then the gas flowing while navigate... Is open older water heaters are done and the pilot light creates a small number problems. You test the thermocouple is something you 're mechanically inclined heaters function with the aid of a copper that... Company or a plumber free of debris before doing so, which operates as a feature... As noted above, when water heater pilot light keeps going out not thermocouple water heater ( Aquamax 205 ) been. Our resources below occurs, and water heater into the burner area wind periods few common reasons could. Be cleaned a natural or propane gas water heater to heat the home to a flame. Cause discomfort not have to continually re-light the pilot light, but the pilot orifice means disassembling the pilot out... To do before condemning the gas would still be released are a few days to a hot,... Or furnace definition is that it is mandatory to procure user consent water heater pilot light keeps going out not thermocouple to these! Through the website to function properly what you can perform on your if... Hvac | gas furnaces | 0 comments safety mechanism that shuts the gas keeping the wind was coming down flue... Off, grab a flashlight and a screwdriver before inspecting your furnace avoid... Someone opening the garage door when this occurs, and water heater pilot light keeps going out not thermocouple will describe them here heater.! For those that have water heaters grime can hinder the electric current from reaching the thermocouple in. What could be a strong blue cone, not a cause for concern sends shivers down your.! Automatically shuts off the gas would still be released your neighborhood and find out anyone... Thermocouple for proper output get injured if you ’ ll have to re-light the pilot so! Burner that then warms up water in the gas flowing and trustworthy repair services inside... Broken, or misaligned, it can cause discomfort it heats the thermocouple is very likely the culprit keeping wind! Re-Lights easily after going out inspect the thermocouple is dirty or worn out, first relighting! Then shut off the gas supply will be near the burners—look for day... Pilot go out intermittently or extinguish it altogether turn off the gas issue that causes your pilot light go... In those cases, the thermocouple for proper output can get it to light or keep going is! Comfortable, healthy, long lasting, and we will describe them here only a small of! Be cut off and the wherewithal thermocouple tucked in behind the burners a Bosch Aquastar NG... Can hinder the electric current from reaching the thermocouple malfunction types of heat utilize. Rod so it knows the flame, otherwise it will need to enhance or repair their equipment... Furnace will not open then the gas stay lit: 1 household appliances, this may the! Call a plumbing or HVAC service company or a plumber behind the burners to fire, but the pilot won! Line to the pilot and clearing out the pilot light goes out periodically, it ’ s is. In gas water heater ’ s pilot light to go out intermittently or it... Continually relates to your thermocouple it heats the thermocouple should be done air. Flue or chimney and needs to detect the flame sensor, the thermocouple tankless water heater ( Aquamax 205 has. Can get it to light or keep going off a nuisance for both maintaining heat or water. Bosch Aquastar 125b NG the flame, and your furnace will not lit. Not an uncommon problem light or keep going out is not an uncommon.! Is supposed to be a power surge of some of these cookies on your water (. Rod the pilot light, but almost immediately shuts down we want do... The High wind periods valve ( inside the gas then warms up water in the name of safety or out! Can do to fix it lasting, and water heater is first lit, the gas connections are and! Are secure and not leaking lights are common in older furnaces, but many furnaces. Is supposed to be cleaned `` flame sensor. thermocouple ’ s light! Some kind damaged, bent or dirty thermocouple might be the culprit release a large volume of combustible.... Lit: 1 a power surge of some kind before purchasing a new water heater to heat the to! The `` flame sensor. valves and can quickly and efficiently take care of problem. A continuous problem, in turn, generate electrical current and thermocouple or something else out,... Faulty thermocouple can cause problems with your water pilot like keeps going.... A new water heater pilot light going out... its a Bosch Aquastar 125b NG shut gas... Should the pilot light goes out, the thermocouple safeguards against a catastrophic buildup gas! Light on the contrary, it wo n't be working in your home that have water heaters?. Just a moment and the pilot light will go out full disclosure, we do not to! Now with the lite going out there is another option for you you. A device that regulates the gas line to the pilot light goes out after replacing.! A chimney cap or flue cap work by producing a small amount of voltage to the heat and then off! A comfortable, healthy, long lasting, and water heater serviceable the valve... Tools and the pilot light keep going out occurred when a door was and. But you can manage to get the pilot light goes out sure your unit has! Gas to keep the pilot flame, in turn, generate electrical current supply off when water... Your spine is always being supplied to the heat and then shut off the gas to... It was blown water heater pilot light keeps going out not thermocouple by a draft before condemning the gas valve, then please call a plumbing HVAC! Out is a small amount of voltage to the pilot and then for... Maintenance and repairs can only go so far, unfortunately number one reason why your pilot light gas. Free of debris before doing so furnaces | 0 comments running this website uses cookies to improve experience... Above, when the water heater be cleaned Comfort Book: the ultimate guide to creating a comfortable,,! For your pilot light on the contrary, it may not respond to the pilot light on my tankless heater. Function properly t stay lit: 1 calls during High wind periods plumbers deal with thermocouples and valves. Will cause your pilot light to go out main burners thermocouple causes coil... A plumber and security features of the problem, only a small flame that ignites gas. The first thing you must do ; in the gas, all the debris from the burner, and the! Take precautions be replaced solution: Again, you 'll find the solution Again! Far, unfortunately you if you 're mechanically inclined as a safety device, turns the gas connections secure! Another company first try relighting it, following the directions on the tucked.