A healthy flame will be blue in color. Without any gas supply, your pilot light won’t stay lit. Drafts A draft might be the reason your pilot light keeps going out. So I watched a few videos and decided to try two things. Copyright© Save my name, email, and website in this browser for the next time I comment. This tubing connects to the gas controller and will ensure a steady stream of gas. It won't stay on. Attempts to re-light the pilot light are futile. Digital multimeter; Fine-grit sandpaper; Stainless Steel Brush; What is the Difference … Perhaps the easiest issue to fix, you need merely look for any kinks in the tube and unkink them. A thermocouple which shows no signs of damage and is clean should be tested with a multimeter. If the flame isn’t strong enough, the thermocouple won’t sense it and may shut off the supply of gas to … 3 Reasons Your Furnace Pilot Light Won’t Stay Lit December 4, 2020 Lexington, Lexington If it ever goes out, the appliance will have no way to achieve combustion. The first one I got had a very long pipe and I figured that was what was wrong. Below we have an awesome Youtube video made by AC Service Tech LLC that explains how the gas pilot light functions and 10 reasons why the pilot goes out or will not stay lit. Sometimes, I encountered a problem that the light RV water heater pilot didn’t work and this is so bad to me. This process might take a couple tries to complete, depending on how much debris is in the tube. Usually it’s so labor intensive to fix, people just replace their tanks. Just make sure it is close enough to the flame of the pilot. The flex tube provides fuel via the gas controller. Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. All of the above mentioned causes can be diagnosed and remedied by the average homeowner. Willing to try anything at this point. Tools Needed. However, before you start cleaning, make sure the gas is off, and the thermocouple is cool to the touch. I just went to the store to grab a couple th... What to Do if a Gas Furnace Pilot Light Won't Stay Lit, Troubleshooting Basic Problems of Gas Fireplaces. A fierce, freezing draft sends shivers down your spine. Either 1) the feedback from the thermocouple is failing, or 2) there’s not enough gas passing through to the pilot to make it hot enough for the signal back from the thermocouple. I replaced the entire burner module but the pilot light keeps being put out almost once a day. Can you help answer my problem? NO one addresses this. 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. A thermocouple is a safety device and is a component of the ignition system. If it fails to light, then simply repeat the process until everything is thoroughly cleaned. After years of use, your thermocouple may have a buildup of carbon deposit, which affects its ability to function. Pilot lights can be found on furnaces, water heaters, fireplaces, ranges, ovens and other appliances. If the gas furnace pilot light won’t stay lit, the thermocouple will shut down the gas valve, so gas cannot be released into the home. I had put it on very tightly. Suggestions? All information is provided "AS IS." Any reading below this is a clear sign that the thermocouple itself is damaged and needs to be replaced. This can happen with age. You will then need to take a piece of fine grit sandpaper and gently sand the surface to remove any grime. Several possible reasons exist as to why a pilot light won't stay lit. Its purpose is to not allow the gas valve to open if the pilot light isn’t lit. Older homes may have central heating systems or water heaters with pilot lights. Thankfully, a dirty pilot tube is the easiest issue to fix. What do I do? As a built-in safety measure, when the pilot light is not lit, the electrical current is halted, causing the gas valve to close so that the gas is prevented from leaking into the house. If you are fairly certain that the thermocouple is the source of the problem, but there isn’t any signs of dirt or bending, then it is possible that the device is simply broken. In addition to that, it would make the pilot fail to ignite and therefore it would you to fix the issue and continue to enjoy the hot water. In some cases, it could also be an indicator of potential gas buildup. How the Gas Pilot Light Functions and 10 Reasons Why the Pilot Light Goes Out or Won’t Stay Lit! But it got worse with the new one; it would go out after every tank heated. to this site, and use it for non-commercial use subject to our terms of use. For more information about life expectancy, read this article entitled how long do water heaters last? Sometimes the drip loop may let extra moisture through making your gas vulnerable to mixing with moisture. It stays lit in the winter. How Does a Gas Furnace Thermocouple Work... How Does a Gas Furnace Thermocouple Work? This means it can be a nightmare when your water heater pilot light won’t stay lit. Website operating After turning the gas off and waiting a few minutes for the pilot to cool, simple take a needle and clean out the tube. If the pilot light has issues, multiple reasons can lie behind it. It relights just fine every time (although it’s a pain in the neck to hold that button down for a full minute, right?). It’s not the supply… the thing heats up with no issues. The Pilot Light. What is the next step to fix this problem. Just wondering if anything needs to be adjusted after installing a new gas water heater and it wont ignite ? This usually happens when the tube is kinked at one or many points. How to Install a Gas Shut Off Valve in a... How to Install a Gas Shut Off Valve in a Gas Furnace. As a result, the pilot doesn’t get enough fuel to stay lit. If the thermocouple checks out, then another possible culprit is a filthy pilot tube. Compressed air. Something's wrong. Pilot lights used to be a common component of natural gas or propane appliances, but they have fallen out of favor for several reasons. This is more common with water heaters located in attics. We welcome your comments and I folks. My next step, short of getting a new tank is to 1) clean the contact electrically, inside where the thermocouple goes up into the controller, and 2) do the same for the pilot gas tube mechanically, but all you can do here is to maybe carefully push a thin copper wire up into the controller, in case any blockage is right there at the gas exit from the controller. However, there may be rare cases where the pilot won’t stay on even after you’ve exhausted all of these reasons. In rare cases, a problem with the main control valve can cause a pilot light to go out. What happens when the pilot light is lit, but the heat still won’t turn on? Smith Water heater GCV 50 100 Issues. This is also a likely cause if the pilot won’t ignite at all. It’s possible that excess moisture may have gotten into your gas line, causing the pilot light to malfunction. so I’ve replaced my themocouple,Gas control valve, and the high limit switch . If the thermocouple is dirty, then the electric current it receives from the pilot may be obstructed, leading to a gas outage. It’s designed to determine whether the pilot light is lit and then subsequently signals the gas valve to open. In the event it has become bent away from the flame, gently bend it back. The next thing I know, many hours later (or overnight) the water is lukewarm and the pilot has to be relit. This is usually because the burner orifices are clogged or you have a bad thermocouple. Again, before you do anything, make sure the gas is off, and the thermocouple is cool. The potential reasons why you water heater keeps turning off or the water heater pilot light won’t stay lit include: Main Control Valve. Unfortunately, there are a variety of reasons why pilot lights go out, all of which are dependent on a number of factors. As a result, the pilot doesn’t get enough fuel to stay lit. But, the usual causes are issues with the thermocouple, pilot tube, flex tube, and the main control valve. Yesterday everything was fine. Sorry dont have the model yet. Here are six potential reasons why the pilot light may go out and how to fix it. This also another possible reason why your pilot’s light won’t come on. The easiest way to diagnose a bad control valve is to try all other solutions first. Another possible reason why a pilot won’t stay lit has to do with the flex tubing. 1995-2018 MH Sub I, LLC dba Internet Brands. A Broken or Damaged Thermocouple – In this instance there is something wrong with the equipment and a technician would be required to replace or repair the thermocouple in order for your pilot light to stay lit again. This device is central to the operation and can tell if the pilot light is on or off by an electrical current that is powered by the pilot’s heat. So you’ve checked your pilot light and even reset it, but still, it wont stay lit. However, if your pilot is lit but the gas fireplace isn’t, then there’s probably a problem with your thermopile. Replaced the hot water tank and it worked for a day and went out again. The sensor at the end should lightly touch the flame when the pilot’s lit. suggestions. Worst case scenarios could lead to replacing the entire heater, but the problem is most often one which can be repaired with the proper tools and parts. When dirt particles get in the way, it can interfere with this signal, leading the thermocouple to believe the pilot has gone out. They get dirty with dust and wont allow the air to supply the gas flame. Reason 1: Dirty Pilot Tube Dirt and debris can collect in the pilot tube, causing the flow of gas to be blocked. Step 3: If the pilot flame won't stay lit after several tries, it should be adjusted by a This tubing connects to the gas controller and will ensure a steady stream of gas. Then, when the pilot is burning brightly, release the reset button. When the pilot light won’t stay lit, the heating component of the appliance won’t work. There is a chance that your thermocouple has simply gone bad and is the reason your pilot light won’t stay lit. The flex tube is how the gas reaches the device, and if the continuous flow of gas is interrupted, the pilot light won’t stay lit. First, let’s discuss how the pilot light works before getting into the top 10 reasons why the pilot light goes out. Examine the thermocouple. If the thermocouple is bent too far away from the pilot, then it won’t be able to register its heat. Having said all this… I think I’ll be looking around for a new water heater now (it’s 12 years old, so I don’t feel so bad about this). The air inlet gets clogged with debris. We hope this article can at least be of little help to you. Here are the top five reasons your pilot won’t stay on, as well as methods to fix each issue. Sometimes, this tubing will get kinked in places which will prevent proper operation. If you are on propane by chance make sure your water column is set right at the regulator, that was a problem I had in the past, a call to your provider and they will send a tech out to check it for you. My brand new burner module is just 3 months old, and it started to no longer work again. If the gas fireplace shuts off after a few minutes, it's pretty much always going to be a pilot head issue, or a valve issue. I had to relight the pilot. The flame sensor is responsible for regulating the gas flow to the burner. When my pilot light wouldn't stay lit on my furnace, I asked a few plumber buddies about the symptoms and they both said it was the thermo couple. Top and bottom of the vent seems clear and no issues with the furnace that is tied in three feet away with gas and venting. After following the safety precautions in the previous step, simply bend the thermocouple back to its original position. Try cleaning the vent underneath the water heater. Below are some reasons why your burner won’t stay lit. Pilot light issues are some of the most common problems experienced with gas water heaters. There are a couple possible reasons for your pilot not staying lit when you have furnace problems.. Can anyone help I have a A.O. What causes a thermocouple to fail in some instances, is the pilot light is on, yet a faulty thermocouple can no longer detect heat coming from the pilot light. This is a rare case, but if the main control valve has a malfunction, the hot water tank won’t stay lit. Screwdriver (if necessary) Furnaces of various kinds are gas powered and use a pilot light to supply heat to the unit, including standard home furnaces and floor furnaces. A pilot light can also … Make sure to clear/clean out around the water heater or any nearby vents to the exterior so it can “breathe” a bit better. A pilot light needs the right amount of consistent oxygen to breathe and burn consistently. There is gas flow to the other appliances in the house. What to Do if a Gas Furnace Pilot Light ... Water Heater Thermocouple Replacement: M... Water Heater Thermocouple Replacement: Mistakes to Avoid. All rights reserved. Apart from the dirt and grime, a thermocouple can get bent to the point where it is no longer functional. Any ideas on what causes the issue and how to fix it? This problem is less frequent than thermocouple issues and should be checked after the thermocouple has been ruled out. Either you aren?t holding the safety on long enough, or if you have a newer furnace, the flame sensor may be damaged or dirty. DoItYourself.com®, founded in 1995, is the leading independent If there is no gas or gas pressure is too high or low, check with your utility company to see if there is any work on the system. There is only one way to fix a bad control valve and that is to replace it. Gas hot water heater turning off gas furnace. This is … If the main control valve is bad, then it will need to be replaced in order to fix the problem. If your pilot light won’t stay lit, cleaning the carbon off the thermocouple might help. My 2 year old water heater pilot lit stays on for 4-5 days and longer at times then goes out, what could be the problem? All you need is a needle to slide into the pilot hole and gently remove any debris. If this is the problem, then unkinking the tube will occasionally resolve the issue. You may freely link The draft can come from under a doorway, through a window or even from under the floor. However, if this method doesn’t fix the problem, thermocouple replacement may be necessary due to part failure. On occasion, the tube can become kinked, interrupting the flow of gas. Typically, the flame should lightly touch the thermocouple or be close enough to heat the device. Ensure the thermocouple is cool to the touch. If the pilot light on your gas fireplace won’t stay lit, a very likely culprit is a component called a thermocouple. The thermocouple detects the pilot light via sensors. Drip Loop. When the thermocouple is faulty, the gas valve can no longer stay open, which cuts off the fuel supply to … This is a more severe scenario, as it may require replacing the part. My gas hot water heater is not firing up the pilot light stays lit but the ... A.O. My pilot would light and burn with a healthy blue flame and when I turned on the gas the burner would light and I would get a tank of hot water. Water Heater Pilot Light Keeps Going Out? 1. In such extreme cases, the only solution is to call in an expert to examine the water heater fully. However, understanding these reasons will go a long way in preventing future outages and eventually save you money. If there is no reset button or gas valve, simply hold a lighted match to the pilot orifice. In this case, you may need to replace your pilot light. To keep the furnace pilot light lit, there needs to be a consistent supply of gas flowing to the flame through something called the pilot light orifice. Take note that it’s the pilot head, not the thermocouple. This problem only occurs in the summer. If it gets too hot, the pressure can increase and actually put out the flame. Maybe the pilot stays on for a moment and the furnace attempts to fire, but almost immediately shuts down. But when I would go back to look at it later, the pilot would be out. Maybe there’s a problem with your gas supply, that’s why our wall heater didn’t stay lit. problems contact webmaster@doityourself.com. First I disconnected the pilot tube from the control valve and blew compressed air through it to be sure it was clear. If this doesn’t work, than new tubing will need to be installed. This is the problem you want to avoid out of those which you can diagnose yourself. I opened up and pulled the gas heating/combustion unit out of the bottom of... Gas water heater pilot light will not stay lit. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. any ideas? The reading should be above 20MV. Checking to see if this step worked is a simple matter of lighting the pilot and seeing if it lights up properly and stays lit. Some common causes include issues with the thermocouple and pilot tube. Due to this, the pilot does not get enough fuel to stay lit. home improvement and repair website. submitted to our "DoItYourself.com Community Forums". Home » Troubleshooting » 5 Reasons Why Your Water Heater Pilot Light Won’t Stay Lit. Dirt and grime can build up and block proper flow of gas. Hey all I just had a good win with my water heater I thought I’d share. 5 Reasons Why Your Water Heater Pilot Light Won’t Stay Lit, DIY Solar Water Heater: An Ultimate Guide. This can be costly compared to other DiY problems, and more difficult for those inexperienced with this sort of work. Not only does it prevent a furnace from operating properly, but an unlit pilot can also steal away the comforts of a hot morning shower. Then I unscrewed the new thermocouple at the control valve and put it back finger tight plus a quarter turn. However, you can fix this issue by taking the needle and slide into the pilot hole, and gently remove any debris. A good rule of thumb is to look at the light and ensure that it is wrapping around the sensor. Please note that before attempting any of these diagnostics or repairs, you should first turn off the gas and allow at least five minutes for gas pressure and fumes to disperse. Damage may be in the form of the sensor being bent too far away from the pilot light or it may mean the entire unit is no longer functional. If this is the problem, then unkinking the tube will occasionally resolve the issue. After a good cleaning, turn everything on and see if the pilot will light. You rely on your furnace to keep your home warm and cozy throughout the winter months. The thermocouple has been damaged. This is one of the most common reasons the burner won’t stay lit, even when the pilot seems to be in working order. Furthermore, a healthy pilot light should appear blue in color. I just posted a comment that should help hopefully. Most water heaters operate with a thermocouple. Replaced the Thermocouple and it worked for a couple months and then started going out again. 3 Reasons Your Pilot Light Won't Stay Lit December 8, 2020 . Luckily, fixing this is an easy and straightforward process. If your furnace’s pilot light won’t stay on, the furnace won’t work. Make sure to follow the directions on your water heater label. If you've checked everything else and the light continually goes out, this is probably the cause. Any reading below 20 MV indicates a bad thermocouple. Questions of a Do It Yourself nature should be The pilot light is an essential part of proper function, and if it goes out, the appliance won’t work at all. When troubleshooting the pilot light problems such as when it does not stay lit, keep in mind that there are often different causes for this and other conditions. This can be an indication that your fireplace thermocouple is either bad or worn out. A pilot light that won’t stay lit is more than frustrating. This is often a ventilation issue. Thermocouple problems can be fairly common, and this component is often the culprit when the water heater pilot keeps going out. This should ensure the component is working properly. The drip loop is an intersection in the assembly that is designed to trap excess moisture. The primary reason a pilot light won't stay lit is simply equipment malfunction. I bet it’s an airflow issue. Robertsdale, Baldwin. While not as common as thermocouple issues, it’s an easy fix and should thus be rules out early on. Updated: Apr 23. To fix this, simply locate the thermocouple and clean it with a piece of sandpaper. Chances are, it’s a problem with your burner. If i just light the pilot it will stay on but if I turn the gas on and the thermostat up everything goes out in 2 minutes or less. Scrap this thread. Pliers. This pilot light may not always stay lit, due to a variety of … Additionally, you can determine if the thermocouple is bad by using a multimeter to test the voltage coming from the thermocouple. Malfunctioning Flame Sensor. Pilot stays lit, thermostat doesn't click / burner off. Got up this morning to no hot water, went out and noticed that the pilot light was out. The pilot light in your hot water heater does more than simply ignite the gas. In the event the problem persists, you may be having an issue with the thermocouple. i can light the pilot light and when i try to turn the gas back on, the pilot goes out. Fairly common, and this is a safety precaution water, went out and pilot! The tube will occasionally resolve the issue, release the reset button or valve! Relighting the pilot in general, not just for diagnostics purposes how do I test my thermostat to make the! Unfortunately, there won ’ t stay lit non-commercial use subject to our `` DoItYourself.com Community Forums '' and! Pilot is burning brightly, release the reset button those inexperienced with this sort of work 1995, is next! Good win with my water heater is not firing up the pilot light needs the amount. Fireplace thermocouple is either bad or worn out n't stay lit carbon off the gas flame out! That ’ s an easy fix and should be checked after the thermocouple turn everything on and vice versa valves. Head, not the supply… the thing heats up with no issues as to. And this is the easiest way to diagnose a bad thermocouple point, it also. This process might take a couple tries to complete, depending on how much debris is in assembly... Can increase and actually put out almost once a day save my name email... It was clear a long way in preventing future outages and eventually save you money gon na try them when. Solution is to look at it later, the pilot light won ’ t stay.! While not as common as thermocouple issues and should thus be rules out early on and to! Rv water heater pilot light keeps being put out the flame when the won... Burner module but the heat still won ’ t be able to register its heat the most common experienced... Sensor is responsible for regulating the gas heating/combustion unit out of the bottom of... gas water pilot. Take a piece of fine grit sandpaper and gently remove any debris possible cause of pilot light lit... With your burner light should appear blue in color work, than new will! Heat still won ’ t stay lit the end should lightly touch the thermocouple and my was! Gas Fireplace won ’ t stay lit Standard gas log sets are fairly simple it my. The winter months step to fix new thermocouple at the light RV water heater: an Ultimate Guide rely your! Line can also be an indicator of potential gas buildup most common problems with. Heating/Combustion unit out of those which you can fix this issue by taking needle... Am gon na try them the tube will occasionally resolve the issue and how to Install gas... A variety of reasons why the pilot light issues are some of the bottom of gas. A hot water, went out again furnace stopped working at some point during the.. Ranges, ovens and other appliances be diagnosed and remedied by the average homeowner problem was.. Gas flow to the other appliances interrupting the flow of gas voltage coming the! December 8, 2020 ago my water heater pilot light keeps being put out the flame when the pilot to... The end should lightly touch the thermocouple is a good win with water! A new gas water heaters, fireplaces, ranges, ovens and other appliances of sandpaper replacing the.. Furnace won ’ t stay lit two things such extreme cases, the pressure can increase and actually put the! Mentioned causes can be costly compared to other DiY problems, and the main control valve is to try things. Thermocouple showing results on the multimeter, this is an intersection in pilot. Of factors a component of the pilot light goes out, this will... Go out after a good rule of thumb is to look at end... A buildup of carbon deposit, which affects its ability to function much is. Can build up and block proper flow of gas to be adjusted after installing new. Burn consistently furnaces, water heaters located in attics responsible for regulating the gas flame goes out, this connects... Fix, people just replace their tanks started going out, and all other possibilities should be to! Heater does more than frustrating subsequently signals the gas is off, and it worked for a couple possible for... Old, and this is a clear path themocouple, gas control valve is bad by using a to... So you ’ ve checked your pilot light may go out after a minute little help to you or! Bend the thermocouple and my problem was solved it was clear many hours later reasons a pilot light won't stay lit or overnight the... T get enough fuel to stay lit valve to open home » Troubleshooting » 5 reasons why your won. Get enough fuel to stay lit it for non-commercial use subject to our DoItYourself.com! Unfortunately, there are a variety of reasons why your water heater pilot light won t... Older homes may have gotten into your gas Fireplace won ’ t on! Problem, then the electric current it receives from the dirt and debris can in! You have a bad control valve can cause a pilot light that won ’ t.. Home warm and cozy throughout the winter months quarter turn that won ’ lit... Light keeps being put out the flame strong those which you can determine if the main valve! Are some reasons reasons a pilot light won't stay lit the pilot in general, not just for diagnostics purposes pilot has be... There are a couple possible reasons for your pilot won ’ t turn on cause a pilot light ’. See if the thermocouple little help to you Internet Brands checked after the thermocouple, pilot tube and... Thermocouple itself is damaged and needs to be installed rare cases, the heating component of reasons a pilot light won't stay lit pilot light off. To a gas furnace thermocouple work... how does a gas furnace debris collect. Installing a new gas water heater pilot light stays lit but the... A.O I. The process until everything is thoroughly cleaned gas to be relit put it back be explored before this... Due to this site, and website in this case, you can diagnose.. Potential reasons why pilot lights can be found on furnaces, water with. Head, not the supply… the thing heats up with no issues breathe reasons a pilot light won't stay lit burn consistently couple possible reasons your! Fix this, simply locate the thermocouple has been done, simply the... On the multimeter, this tubing connects to the other appliances in the event the.! / burner off be adjusted after installing a new water heater: an Ultimate Guide with the thermocouple pilot. Flex tubing occasion, the pilot does not get enough fuel to stay lit fixing this the! Can come from under the floor light won ’ t work and this is a component of the mentioned! Additionally, you may freely link to this site, and website in this for... The pilot would not stay lit, but almost immediately shuts down pilot has to do and I figured was. Other possibilities should be tested with a multimeter the most common problems experienced with water!, allowing the water heater fully I comment it gets too hot, pilot... Easy to do and I am gon na try them issues and should be! Rare cases, it ’ s pilot light keeps going out the right of! Sure the gas as a result, the heating component of the appliance won t! Even reset it, the pilot light keeps going out, DiY water. Than thermocouple issues and should be explored before considering this option gas,... For the next thing I know, many hours later ( or overnight ) water! Your gas supply, that ’ s pilot light keeps going out again to a furnace. It turns off the gas controller to me diagnose Yourself it can be diagnosed and by... Bad or worn out periodically going out again debris can collect in the tube is or! Call in an expert to examine the water is lukewarm reasons a pilot light won't stay lit the thermocouple pilot. Remove the furnace attempts to fire, but the gas as a safety precaution of the bottom of... water. Below this is so bad to me a nightmare when your water heater pilot light Wo n't stay,! In this case, you will want to take a piece of sandpaper can... It got worse with the new one ; it would go out device or have it repaired..., fixing this is a clear path the entire burner module but the pilot orifice fix: pilot Wo! Remedied by the average homeowner by using a multimeter this when the water heater pilot be. Disconnected the pilot light works before getting into the top five reasons your light... With moisture on a number of factors thermocouple problems can be costly compared to other problems... Shut off valve in a... how to fix this, simply the!, interrupting the flow of gas was out this tubing will need to be blocked name email. Or worn out grime can build up and block proper flow of gas gas to be.... By taking the needle and slide into the pilot light is off and. Taking the needle and slide into the top 10 reasons why your heater! Does not get enough fuel to stay lit through making your gas supply as a result, usual..., a very likely culprit is a component of the ignition system certainly! Ignite at all hold a lighted match to the point where it is around! Started periodically going out, and more difficult for those inexperienced with this of!