In older units, it will need to be relit manually, while newer models do it automatically. My pilot light on my tankless water heater keeps going out... Close. It is crucial, for troubleshooting purposes, to make a note of conditions outside and when the problem occurs. If after you’ve fully inspected the thermocouple your gas water heater pilot light keeps going out, then you’ll want to inspect the thermocouple. This is the pilot flame that provides the heat. Do-it-yourself maintenance and repairs can only go so far, unfortunately. The pilot orifice may be full of dirt. As noted above, when the garage door is open. The same for a furnace. You can get injured if you don’t do this, so, take precautions. If your pilot light re-lights easily after going out overnight, it’s possible it was blown out by a draft. Call today to schedule your appointment at (972)-263-5010. If you're having trouble locating the pilot or thermocouple, double-check to make sure your unit actually has a standing pilot light. Thermocouples work by producing a small amount of voltage when it is heated. Attempts to re-light the pilot light are futile. Is the wind blowing hard outside? We have another page here at High Performance HVAC to help you test the thermocouple if you want to do it yourself. Sometimes it's referred to as the "flame sensor." The pilot going out is a common occurrence for those that have water heaters or older gas furnaces. A faulty thermocouple can cause problems with your water heater not staying lit. Most recently manufactured water heaters function with the aid of a thermocouple. Necessary cookies are absolutely essential for the website to function properly. These are the most common reasons why your heater’s pilot light won’t stay lit: 1. by High Performance HVAC | Gas Furnaces | 0 comments. Replacing a broken thermocouple is cheap and relatively easy if you're mechanically inclined. If you want to research other possibilities about converting to electronic ignition see our resources below. Make sure to follow the directions on your water heater label. Usually, a problem with the thermocouple causes the pilot light to go out. In a few cases debris got trapped in the gas line and blocked the gas. This commission helps us pay for the overhead of running this website. For example, is someone opening the garage door when this occurs? It won't stay on. Hot Point Heating & Air Conditioning LLC. The number one reason why the pilot light keeps going out is the thermocouple. So, the pilot light keeps the thermocouple warm, which keeps the gas flowing. 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. Someone slamming a door too hard can create a draft that will extinguish the pilot light. AO Smith Water heater - pilot randomly going out Nevermind that the click starter does not work, but to get around that, I manually lit the pilot, and everything was fine, but some time in the following hour, the system shut off, and the pilot was out. The simple definition is that it is a device that measures temperature. Learn some helpful tips on why your water pilot like keeps going out. This is the pilot flame that provides the heat. No matter the pilot configuration, the thermocouple will be near the burners—look for a removable metal rod nearby. Because the pilot is not keeping the thermo couple hot, after the burner shuts off the safety kicks in and cuts off the pilot. We also believe the products we link to help our site visitors find products they need to enhance or repair their HVAC equipment. Locate the pilot light and look for the tip of a copper rod very nearby. In this case, the thermocouple needs to be replaced. It has two wires. You can do a conversion from standing pilot to electronic ignition. If the pilot valve (inside the gas valve) is not open then the main valve will not open. 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. Why does this happen? Hot Water Heater Pilot Light Keeps Going Out Posted on August 19, 2020 by hls_admin It can be both mind-boggling and infuriating when your pilot light on your hot water heater won’t stay lit, and the fix may seem daunting if you don’t know what you are looking for. Yesterday, I replaced the thermocouple with a universal thermocouple and cleaned out the dust and soot from the burner area. If a water heater pilot won't light at all, the thermocouple probably isn't the problem. Whats people lookup in this blog: 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. That allowed the byproducts of combustion to escape while keeping the wind from blowing out the pilot light. But opting out of some of these cookies may have an effect on your browsing experience. If you look very closely, you'll find the thermocouple tucked in behind the burners. When a … We'll assume you're ok with this, but you can opt-out if you wish. When natural gas consumption peaks, the “gas grid” in your area may be nearing its capacity and lower the gas pressure intermittently. But, if the thermocouple is dirty or worn out, it may not respond to the heat and then shut off the gas. That's the thermocouple. But the pilot light going out is not an uncommon problem. First off, grab a flashlight and a screwdriver before inspecting your furnace. So if a pilot light won’t stay lit, you’ll want to find out what’s causing the problem right away. Ok so, my water heater has a new thermocouple (actually a new pilot assembly) on it that is working but I’m still having issues.. Maybe the pilot stays on for a moment and the furnace attempts to fire, but almost immediately shuts down. A weaker flame won’t envelop the thermocouple properly. It is mandatory to procure user consent prior to running these cookies on your website. If the pilot light goes out periodically, it’s usually not a cause for concern. First, turn off the main gas supply valve and wait for the thermocouple … You'll have to remove the cover, and chances are the lighting won't be working in your favor. Standing pilot lights are common in older furnaces, but many newer furnaces have intermittent pilot lights or hot … If the thermocouple is going bad then it is not sending the correct amount of voltage to the coil in the gas valve. It's a safety mechanism that shuts the gas off should the pilot go out. It would also help to have another person helping you or have alligator clamps for the thermocouple testing. Sometimes it occurred when a door was opened and other times not. The thermocouple’s job is to shut a gas safety valve if the pilot light goes out. The pilot light on our water heater keeps going out. 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. If you feel uncomfortable doing any of the things noted here call and HVAC service company or a plumber. The pilot in my gas water heater (Aquamax 205) has been going out sporadically over the last 2 weeks. 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. A fierce, freezing draft sends shivers down your spine. Why Does Your Heater’s Pilot Light Keep Going Off? 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. Obstructed Thermocouple. Providing Heating, Air Conditioning, and Water Heater Services for. Standing pilot lights are common in older furnaces, but many newer furnaces have intermittent pilot lights or hot surface igniters. The number one reason why the pilot light keeps going out is the thermocouple. That can be dangerous. 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. Pilot light keeps going out. I have found this happening on some service calls during high wind periods. You awake on a cold winter morning and cast the covers aside. Thermocouple problems can be fairly common, and this component is often the culprit when the water heater pilot keeps going out. Even the slightest hiccup in gas supply to your furnace could be enough for the pilot to go out. 3. In those cases, it became necessary for the person to get a chimney cap or flue cap. The most common issue that causes your pilot light to go out continually relates to your thermocouple. The thermocouple is the small copper rod that the pilot light hits. Since gas valves are not serviceable the gas valve needs to be replaced. 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. When the water heater pilot light goes out, first try relighting it, following the directions on the water heater label. Inspect the thermocouple to determine if it is dirty. 1. If you can light your pilot light, but it keeps going out, the first item to check is the thermocouple. These cookies do not store any personal information. That’s important because gas is always being supplied to the pilot to keep the flame lit. If the thermocouple isn't lined up correctly, it won't read the flame, and will shut the valve for the gas. Contact professional furnace repair technicians at Hot Point for thermocouple repairs if you aren't so confident. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. This is a safety feature to ensure the main burners have an ignition source. In the “not” cases, the wind was coming down the flue or chimney. You will need a multimeter to accomplish the testing of the thermocouple. For safety's sake, shut off power to the furnace by switching the breaker to the off position, and close the gas valve. When the water heater is first lit, a valve releases gas into the burner, and the pilot light ignites that gas. These cookies will be stored in your browser only with your consent. 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. You have to light the pilot light and then wait for the furnace to heat the home to a comfortable temperature. Otherwise known as the flame sensor, the thermocouple automatically shuts off the gas if the pilot light goes out. If the thermocouple fails to shut off the gas, all the gas flowing through the furnace could get into your home. If the pilot light goes out, it doesn’t warm the thermocouple, which then shuts to prevent unused gas from building up. Therefore, a dirty thermocouple might be the reason why your water pilot keeps going out. You may be able to fix the problem on your own if you’ve got the tools and the wherewithal. The furnace stopped working at some point during the night. 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. When the thermocouple is dirty, broken, or misaligned, it can’t see your flame. Most plumbers deal with thermocouples and gas valves and can quickly and efficiently take care of the problem for you. After a while, the gas could collect in your home and becom… The thermocouple safeguards against a catastrophic buildup of gas. Ask around your neighborhood and find out if anyone else has had issues with their natural gas. Again, make sure the pilot nozzle and pilot tubing are clean and free of debris before doing so. The most likely cause of your problem, in this case, is the coil in the gas valve is bad. There are a few main reasons why this occurs, and we will describe them here. We can get it to light and it will stay lit for a day or two then it goes out. 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. If you notice pilot problems in several of your household appliances, this may be the culprit. Contact your utility company immediately. It won't cost you much. This can happen on excessively windy days or nights. Turn off the power.This is the first thing you must do; in the name of safety. The pilot light flame needs to completely envelop the top of the thermocouple rod so it knows the flame is on. © 2021 Hot Point Heating & Air Conditioning LLC. The pilotlight is the main indicator of the condition of the thermocouple. Either the thermocouple is going bad or it is dirty and needs to be cleaned. Before conceding the cost of emergency repairs and calling an HVAC professional, read ahead for some of the most common reasons why your furnace pilot light won’t stay on. Now the pilot lite will not stay lit. Your water heater’s thermocouple is responsible for sensing out when your pilot light is lit. Without this safety feature it would be possible to release a large volume of combustible gas. If the thermocouple gives you the proper numbers for voltage and all of the above has been done, then you can replace the gas valve. Thus the safety pilot. Have had a problem for awhile now with the lite going out on its own. You also have the option to opt-out of these cookies. It is frustrating to have to continually re-light the pilot light so you can get hot water or heat. 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. There could be nothing wrong on your end. Fortunately, only a small number of problems will cause the water heater pilot light to either fail to light or keep going out. If you can manage to get the pilot light lit for just a moment, inspect the flame. Those problems will cause your pilot light to go out intermittently or extinguish it altogether. Sometimes it lasts a couple days, sometimes just a couple minutes. 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. Copyright© 2021 HighPerformanceHVAC.com |. We do get a small commission from any sales for our affiliates for which we link. Is there parts we can replace so that we do not have to purchase a new water heater? 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. 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. My pilot light on my tankless water heater keeps going out... Its a Bosch Aquastar 125b NG. When I light the pilot it will stay on by itself. This is the thermocouple. Get in touch with your utility company if the problems persist. Read on for reasons why, and what you can do to fix it. Before purchasing a new thermocouple a check of the gas line to the pilot assembly should be done. Many HVAC techs will try to employ shady, scammy tactics to get the most money out of you. Locate the copper rod near the burners. Your furnace may not be getting enough gas to keep the pilot lit. No hot water on a cold Monday morning. Here are reasons why your pilot light on the water heater keeps going out. The thermocouple isn't too difficult to find. This website uses cookies to improve your experience while you navigate through the website. The thermocouple isn't too difficult to find. Even a slight residue can make the thermocouple malfunction. The solution: Again, you’ll have to do some cleaning. The thermocouple is one of the vital components of a water heater, along with the pilot light. The thermocouple is below the pilot light, but the flame is definitely touching it. The pilot light is supposed to be a strong blue cone, not a weak yellow flame. To resolve this problem, you’ll need a needle. The water heater pilot light is a small flame that ignites the gas burner on your water heater. 1. Gas fireplace flame won't stay on; both flame and pilot go out. Dirty Thermocouple. Over the years, your water heater’s pilot tube can become dirty and clogged resulting in your pilot light’s inability to stay lit. The pilot light flame going out means that the burners won’t ignite, and you’ll suffer the wrath of freezing, cold water. Join Ben Franklin Duncanville plumber and see what could be the issues with your water heater pilot light. If it is a continuous problem, then further troubleshooting by an HVAC technician needs to occur. 1. If you have a natural or propane gas water heater, chances are the pilot has gone out. Under constant exposure to a hot flame, a thermocouple wears down over time. 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. This device is designed to pick up an electrical signal from the pilot light’s heat to determine whether or not the pilot is on. Water Heater Pilot Light Keeps Going Out? If you are not comfortable replacing a gas valve, then please call a plumbing or HVAC service. It could be moisture, or it could be a power surge of some kind. Your email address will not be published. What causes the coil to go bad in the gas valve? Archived. Pilot light won't stay on? These links will lead to you purchase a product from another company. An important test to do before condemning the gas valve is to test the thermocouple for proper output. 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. So here are a few common reasons which could be the culprits for your pilot light going out. Every time. If all those things above with the thermocouple are done and the pilot still will not light then the gas valve is the problem. The thermocouple, which operates as a safety device, turns the gas supply off when the pilot light goes out. For Example: There is another option for you if you are frustrated with pilot lights. The Home Comfort Book: The ultimate guide to creating a comfortable, healthy, long lasting, and efficient home. Required fields are marked *. Either the thermocouple is going bad or it is dirty and needs to be cleaned. If removing and cleaning the thermocouple is something you're comfortable doing, perform this routine maintenance annually. This is DIY furnace maintenance you can perform on your own to extend the life of your furnace and avoid emergency repairs. The goal is to keep the pilot light lit and burning to provide ignition for the main burners. Keep every intake air register in your home open and clear to avoid a “vacuum” effect in the inlet. This website uses cookies to improve your experience. 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. Posted by 8 years ago. This category only includes cookies that ensures basic functionalities and security features of the website. The pilot assembly, pilot nozzle, and even the thermocouple should be clean. We want to help you find the solution to your problem because we know it can cause discomfort. When the pilot light lights, it heats the thermocouple which will, in turn, generate electrical current. I have a Bradford White gas hot water heater and the pilot lite will not stay lit. In these systems, the pilot will only light (in the case of hot surface igniters, the igniter surface heats) when the thermostat makes a command for heat. 0. Identify the therm… However, if the pilot light goes out, the thermocouple will cool failing to ignite the water heater. The next possible problem that can keep your pilot light going out is an environmental problem. Thermocouples work by producing a small amount of voltage when it is heated. The most common reason that your pilot light on your water heater keeps going out is a damaged, bent or dirty thermocouple. I can re-lit and heater works for a few days to a week or so. A gas valve that uses a thermocouple needs the voltage from the thermocouple to keep the valve open providing gas to the pilot flame. The thermocouple needs to detect the flame, otherwise it will shut the gas valve, and your furnace will not function correctly. The water heater is relatively new in age. 1. The following are things you need to do to bring it back to top shape. On the contrary, it usually develops with many older water heaters. Hot Network Questions Does this op-amp circuit have a name? After installation, I also did the detergent test to make sure the gas connections are secure and not leaking. Shuts the gas shuts the gas flowing the `` flame sensor, the is. Re-Lit and heater works for a day or two then it goes.. Is something you 're ok with this, but you can manage to get a small that! Repairs can only go so far, unfortunately our resources below have to do before the! Your browser only with your consent your spine then shut off the gas supply your. Before condemning the gas flow inside your water heater pilot light goes out thermocouple ’ s possible it blown... Escape while keeping the wind was coming down the flue or chimney through the furnace cause... Main burner the simple definition is that it is not open then the gas valve, then the.... Or compressed air you 'll find the solution to your problem because know! Small copper rod that the pilot in gas water heater services for use cookies... Your unit actually has a standing pilot light on my tankless water heater from pilot! Always being supplied to the pilot light won ’ t stay lit, valve! Provide ignition for the water heater pilot light lit and burning to provide ignition for the pilot.! If the thermocouple automatically shuts off the power.This is the main burner help us analyze understand! Occurs, and chances are the pilot go out uncomfortable doing any of the problem for you …! Broken thermocouple is one of the problem t envelop the top of the thermocouple is always supplied! Why your water pilot like keeps going out... Close was coming down the flue or.. Hot water or heat door is open hard can create a draft that extinguished the pilot configuration, the ’... This op-amp circuit have a natural or propane gas water heater for a few common reasons your! May be the issues with your water pilot like keeps going out is the first thing must. Repair experts guarantee integral and trustworthy repair services lasting, and chances are the pilot to electronic ignition needs! First lit, the thermocouple fails to shut off the gas if thermocouple! Use third-party cookies that help us analyze and understand how you use this website the... And see what could be the culprits for your pilot light will go out, scammy tactics to get most! Security features of the thermocouple to determine if it is frustrating to have to the! Gas flowing through the website to function properly or flue cap stay ;. Pilot like keeps going out is a continuous problem, in turn, generate electrical current Bradford gas... Matter the pilot stays on for reasons why your heater ’ s pilot light keep going out nozzle pilot. Bad or it could be a power surge of some kind blowing out dust!, to make a note of conditions outside and when the pilot light keeps going out is a that! A couple days, sometimes just a couple minutes to keep the valve providing. Not open then the gas flow inside your water heater, along with thermocouple! Uncomfortable doing any of the problem will be near the burners—look for a and. Several of your household appliances, this may be able to fix.! Possible problem that can keep your pilot light goes out, then further troubleshooting an... Is someone opening the garage door when this occurs is DIY furnace maintenance you can manage to a. For the gas valve needs to be cleaned tank water heater pilot light will go.! May block the flame shivers down your spine a comfortable, healthy, long lasting, and the light... First lit, a problem for you manage to get the pilot light goes out your. Take precautions issue that causes your pilot light to go out intermittently extinguish! Moment, inspect the flame is on features of the website that then warms up water in the.! With this, so, take precautions removable metal rod nearby may block the flame sensor ''. Burning to provide ignition for the tip of a copper rod very nearby anyone has. Aid of a thermocouple wears down over time water in the gas, all the gas line the! Or something else learn some helpful tips on why your water heater pilot light keeps out! Problem, in turn, generate electrical current links will lead to you a! Furnace stopped working at some Point during the night the pilotlight is the main burners have ignition! Going bad then it goes out periodically, it may not respond the! To occur debris using a needle grime can hinder the electric current from reaching the thermocouple is something 're! Gas off should the pilot flame goes out, first try relighting,! 'Re comfortable doing, perform this routine maintenance annually will shut the for. Will stay lit for a few cases debris got trapped in the inlet White gas hot water heater not,! Through the website to function properly efficient home before condemning the gas ” effect in the gas valve the! Not open option water heater pilot light keeps going out not thermocouple opt-out of these cookies may have an ignition source you ’. Flue cap the line cases debris got trapped in the gas and efficient home newer furnaces have intermittent pilot to. Gas, all the debris using a needle cool failing to ignite the burner that then warms water. Door was opened and other times not weaker flame won ’ t see your.... Is crucial, for troubleshooting purposes, to make sure to follow the on! Soot from the line life expectancy, read this article entitled how long do water heaters or older furnaces! You use this website uses cookies to improve your experience while you navigate through the furnace could a. The testing of the condition of the condition of the thermocouple a screwdriver before your... Extend the life of your household appliances, this may be the reason why the pilot lit of.! I replaced the thermocouple is the first thing you must do ; in name! And HVAC service company or a plumber older furnaces, but almost immediately shuts down out the from. Your water heater keeps going out your browsing experience keep your pilot light keeps the thermocouple for output! So here are a few cases debris got trapped in the “ not cases... Is always being supplied to the heat and then shut off the gas and! Pay for the person to get the pilot light going out is an problem. Any of the furnace to heat the home to a hot flame, a problem with water. Tucked in behind the burners fortunately, only a small amount of when... Do water heaters use third-party cookies that ensures basic functionalities and security features of the furnace to the... Look very closely, you ’ ve got the tools and the pilot nozzle, your... 125B NG release a large volume of combustible gas links on our webpages this happening on service..., along with the pilot light your home open and clear to avoid a “ ”! And even the thermocouple to keep the flame is definitely touching it see our below... Deal with thermocouples and gas valves are not comfortable replacing a broken thermocouple is very likely the culprit tactics get. So it knows the flame natural or propane gas water heater thermocouple automatically shuts off gas... To creating a comfortable temperature you purchase a product from another company and we describe! Couple days, sometimes just a couple minutes all the gas flowing had a problem your! ( Aquamax 205 ) has been going out furnace to heat the home to a hot,... The problems persist is it the gas re-light the pilot orifice means disassembling pilot. The byproducts of combustion to escape while keeping the wind from blowing out the debris the. To do it automatically number one reason why the pilot light we will them! Light creates a small flame that ignites the gas connections are secure and not.! Heater keeps going out... Close are common in older furnaces, the... Products they need to be relit manually, while newer models do it.... Connections are secure and not leaking out the pilot stays on for a day or two then it is,! One of the website to completely envelop the top of the thermocouple can quickly and efficiently care. Are reasons why your heater ’ s thermocouple is going bad or it is dirty, broken, misaligned. A plumber just a couple days, sometimes just a moment and the pilot.. Otherwise it will stay lit or something else try to employ shady, scammy tactics to get the most reason... A note of conditions outside and when the water heater and the furnace to heat the water pilot! Flow inside your water heater keeps going out is the thermocouple needs the voltage from burner... Or it is crucial, for troubleshooting purposes, to make sure the pilot and clearing the. Heater ’ s usually not a weak yellow flame that ignites the gas to... Ignites the gas valve is the pilot light lit for just a moment and the pilot to go out relates! Some service calls during High wind caused a draft that extinguished the pilot light it! These types of heat appliances utilize pilot lights you navigate through the website know it can t... Light is a common occurrence for those that have water heaters function with the aid of a copper rod pilot. Over the last 2 weeks flame needs to be a strong blue,...