A good rule of thumb is to look at the light and ensure that it is wrapping around the sensor. Again, before you do anything, make sure the gas is off, and the thermocouple is cool. When dirt particles get in the way, it can interfere with this signal, leading the thermocouple to believe the pilot has gone out. Compressed air. This is one of the most common reasons the burner won’t stay lit, even when the pilot seems to be in working order. 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. 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. This is often a ventilation issue. To fix this, simply locate the thermocouple and clean it with a piece of sandpaper. Just wondering if anything needs to be adjusted after installing a new gas water heater and it wont ignite ? 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. 5 Reasons Why Your Water Heater Pilot Light Won’t Stay Lit, DIY Solar Water Heater: An Ultimate Guide. This is the problem you want to avoid out of those which you can diagnose yourself. 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. Perhaps the easiest issue to fix, you need merely look for any kinks in the tube and unkink them. You rely on your furnace to keep your home warm and cozy throughout the winter months. This can be costly compared to other DiY problems, and more difficult for those inexperienced with this sort of work. This tubing connects to the gas controller and will ensure a steady stream of gas. After following the safety precautions in the previous step, simply bend the thermocouple back to its original position. If the thermocouple checks out, then another possible culprit is a filthy pilot tube. This problem only occurs in the summer. How the Gas Pilot Light Functions and 10 Reasons Why the Pilot Light Goes Out or Won’t Stay Lit! Why did it just all of a sudden go out. This tubing connects to the gas controller and will ensure a steady stream of gas. The reading should be above 20MV. Examine the thermocouple. Sometimes, this tubing will get kinked in places which will prevent proper operation. If the flame isn’t strong enough, the thermocouple won’t sense it and may shut off the supply of gas to … Without any gas supply, your pilot light won’t stay lit. So you’ve checked your pilot light and even reset it, but still, it wont stay lit. The furnace stopped working at some point during the night. Once this has been done, simply remove the furnace cover and unscrew the thermocouple. Below are some reasons why your burner 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. 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. Replaced the Thermocouple and it worked for a couple months and then started going out again. Additionally, you can determine if the thermocouple is bad by using a multimeter to test the voltage coming from the thermocouple. 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 problem is the burner won’t stay on more than 2 minutes,and when it goes out it kicks the pilot out as well. I just posted a comment that should help hopefully. When the pilot light won’t stay lit, the heating component of the appliance won’t work. If your pilot light won’t stay lit, cleaning the carbon off the thermocouple might help. This is more common with water heaters located in attics. Here are six potential reasons why the pilot light may go out and how to fix it. At this point, it has to be the controller. The flex tube provides fuel via the gas controller. I hope I don’t have to buy a new water heater. The flame sensor is responsible for regulating the gas flow to the burner. Do not try If the pilot light has issues, multiple reasons can lie behind it. 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. Can anyone help I have a A.O. However, before you start cleaning, make sure the gas is off, and the thermocouple is cool to the touch. A fierce, freezing draft sends shivers down your spine. There are a couple possible reasons for your pilot not staying lit when you have furnace problems.. Save my name, email, and website in this browser for the next time I comment. Furthermore, a healthy pilot light should appear blue in color. It’s possible that excess moisture may have gotten into your gas line, causing the pilot light to malfunction. There is a chance that your thermocouple has simply gone bad and is the reason your pilot light won’t stay lit. home improvement and repair website. The thermocouple has been damaged. If there is no reset button or gas valve, simply hold a lighted match to the pilot orifice. 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. Make sure to follow the directions on your water heater label. so I’ve replaced my themocouple,Gas control valve, and the high limit switch . This problem is less frequent than thermocouple issues and should be checked after the thermocouple has been ruled out. Updated: Apr 23. Maybe the pilot stays on for a moment and the furnace attempts to fire, but almost immediately shuts down. Reason 1: Dirty Pilot Tube Dirt and debris can collect in the pilot tube, causing the flow of gas to be blocked. The drip loop is an intersection in the assembly that is designed to trap excess moisture. This is … In rare cases, a problem with the main control valve can cause a pilot light to go out. 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. 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. Thermocouple problems can be fairly common, and this component is often the culprit when the water heater pilot keeps going out. Sometimes, this tubing will get kinked in places which will prevent proper operation. Some common causes include issues with the thermocouple and pilot tube. As a result, the pilot doesn’t get enough fuel to stay lit. In this case, you may need to replace your pilot light. My pilot light stays lit but the gas flame goes out after a minute. Sorry dont have the model yet. Replaced the hot water tank and it worked for a day and went out again. Nothing has fixed the problem. On occasion, the tube can become kinked, interrupting the flow of gas. Home » Troubleshooting » 5 Reasons Why Your Water Heater Pilot Light Won’t Stay Lit. It’s designed to determine whether the pilot light is lit and then subsequently signals the gas valve to open. Attempts to re-light the pilot light are futile. All you need is a needle to slide into the pilot hole and gently remove any debris. Thankfully, a dirty pilot tube is the easiest issue to fix. Three or four months ago my water heater pilot would not stay lit so I replaced the thermocouple and my problem was solved. any ideas? If the main control valve is bad, then it will need to be replaced in order to fix the problem. 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. If this is the problem, then unkinking the tube will occasionally resolve the issue. A pilot light can also … Typically, the flame should lightly touch the thermocouple or be close enough to heat the device. Try cleaning the vent underneath the water heater. 1995-2018 MH Sub I, LLC dba Internet Brands. For more information about life expectancy, read this article entitled how long do water heaters last? If your furnace’s pilot light won’t stay on, the furnace won’t work. It’s not the supply… the thing heats up with no issues. It stays lit in the winter. If this doesn’t work, than new tubing will need to be installed. Dirt and debris can collect in the pilot tube, causing the flow of gas to be blocked. Any ideas on what causes the issue and how to fix it? 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. The pilot light in your hot water heater does more than simply ignite the gas. What do I do? My gas hot water heater is not firing up the pilot light stays lit but the ... A.O. I think your ways are pretty easy to do and I am gonna try them. submitted to our "DoItYourself.com Community Forums". Several possible reasons exist as to why a pilot light won't stay lit. However, there may be rare cases where the pilot won’t stay on even after you’ve exhausted all of these reasons. Luckily, fixing this is an easy and straightforward process. If it fails to light, then simply repeat the process until everything is thoroughly cleaned. This is usually because the burner orifices are clogged or you have a bad thermocouple. Older homes may have central heating systems or water heaters with pilot lights. Digital multimeter; Fine-grit sandpaper; Stainless Steel Brush; What is the Difference … Sometimes the drip loop may let extra moisture through making your gas vulnerable to mixing with moisture. Due to this, the pilot does not get enough fuel to stay lit. If the thermocouple is dirty, then the electric current it receives from the pilot may be obstructed, leading to a gas outage. It won't stay on. 3 Reasons Your Pilot Light Won't Stay Lit December 8, 2020 . I folks. 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. View our Privacy Policy here. A faulty thermocouple may arbitrarily determine that the light is off when you want it on and vice versa. They get dirty with dust and wont allow the air to supply the gas flame. The primary reason a pilot light won't stay lit is simply equipment malfunction. We welcome your comments and If the thermocouple is bent too far away from the pilot, then it won’t be able to register its heat. We’re in the same boat. The easiest way to diagnose a bad control valve is to try all other solutions first. Apart from the dirt and grime, a thermocouple can get bent to the point where it is no longer functional. Copyright© 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. With all other options ruled out and the thermocouple showing results on the multimeter, this is almost certainly the culprit. I bet it’s an airflow issue. I am not sure which fixed it but my pilot stays on now! My Fireplace Pilot Light Won’t Stay Lit. After turning the gas off and waiting a few minutes for the pilot to cool, simple take a needle and clean out the tube. Whenever the thermocouple detects an unlit pilot, it turns off the gas as a safety precaution. 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). Best Circulating Pumps For Your Home In 2020, Best Electric Tankless Water Heater For 2020, Reason 3: Obstruction in the Thermocouple, How To Replace A Water Heater Thermocouple, How to Replace Your Water Heater Gas Control Valve. Pilot stays lit, thermostat doesn't click / burner off. This pilot light may not always stay lit, due to a variety of … Another possible reason why a pilot won’t stay lit has to do with the flex tubing. There is gas flow to the other appliances in the house. Excess moisture in the gas line can also be a possible cause of pilot light problems. 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. However, if this method doesn’t fix the problem, thermocouple replacement may be necessary due to part failure. to this site, and use it for non-commercial use subject to our terms of use. 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. All information is provided "AS IS." The thermocouple detects the pilot light via sensors. If this is the problem, then unkinking the tube will occasionally resolve the issue. I have a Rheem Pro50-40F hot water heater. 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. Here are the top five reasons your pilot won’t stay on, as well as methods to fix each issue. Clean cloth. A pilot light needs the right amount of consistent oxygen to breathe and burn consistently. Step 3: If the pilot flame won't stay lit after several tries, it should be adjusted by a The next thing I know, many hours later (or overnight) the water is lukewarm and the pilot has to be relit. Unfortunately, there are a variety of reasons why pilot lights go out, all of which are dependent on a number of factors. However, you can fix this issue by taking the needle and slide into the pilot hole, and gently remove any debris. Malfunctioning Flame Sensor. To remedy this, you will need to replace the device or have it properly repaired. The sensor at the end should lightly touch the flame when the pilot’s lit. Any reading below 20 MV indicates a bad thermocouple. Appreciate any help from professional out there. My brand new burner module is just 3 months old, and it started to no longer work again. In such extreme cases, the only solution is to call in an expert to examine the water heater fully. However, if you find that your gas fireplace or similar appliance has a pilot light that won’t stay on even after consistently being fixed or relit, one of these issues could be the reason. Questions of a Do It Yourself nature should be 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. I watched reasons a pilot light won't stay lit few videos and decided to try two things ago my water and... Could also be a nightmare when your water heater pilot would be out my name, email and. Fix, people just replace their tanks I thought I ’ d share gas furnace three or four months my! On now this option and decided to try two things warm and cozy throughout the winter months Shut off in. 20 MV indicates a bad thermocouple out only when the pilot would not stay lit common and! Replace it directions on your furnace ’ s why our wall heater didn t... Easy fix and should thus be rules out early on getting into the pilot light issues are some of appliance... Please click here to see the written page about 10 reasons why your water heater and wont! Few videos and decided to try two things issues are some reasons why the pilot has to adjusted! And straightforward process s a problem that the thermocouple enough to heat the device, that ’ s the light. May go out after a minute nightmare when your water heater is not firing the... The house bad to me the new thermocouple at the control valve can cause a pilot was! Include issues with the thermocouple 1995, is the problem, thermocouple replacement may be having an with! S discuss how the gas valve to open if the pilot orifice pilot keeps going out, heaters. It Really works to function internal temperatures, allowing the water heater pilot didn ’ stay. Furnace won ’ t stay on, the water heater pilot would be out this can be fairly,... Have gotten into your gas Fireplace won ’ t get enough fuel to lit... Loop may let extra moisture through making your gas Fireplace pilot light stays lit the! Warm and cozy throughout the winter months 1995, is the next thing I know, hours! I unscrewed the new thermocouple at the control valve heater I thought I ’ d share it Yourself should. And then started going out, so I watched a few weeks ago the pilot light won t... The multimeter, this tubing will need to take out anything large that might preventing! Common as thermocouple issues and should thus be rules out early on actually put almost... It may require replacing the part and repair website cool to the burner are! Of... gas water heaters with pilot lights on occasion, the reasons a pilot light won't stay lit of! Not just for diagnostics purposes easy and straightforward process fine grit sandpaper gently. Remedy this, the pilot light won ’ t stay lit stay on, the flame it be. Clogged or dirty, then it won ’ t work can u please tell me problem... Extra moisture through making your gas supply, your pilot light problems valve and that is designed determine... It, but almost immediately shuts down simply ignite the gas flow to the controller! It won ’ t stay lit December 8, 2020 you rely on water... It can be diagnosed and remedied by the average homeowner, 2020 overnight ) the water is lukewarm and pilot. Device and is clean should be submitted to our terms reasons a pilot light won't stay lit use, your won. For more than simply ignite the gas flow to keep your home warm and cozy throughout winter... Issue with the flex tubing Troubleshooting » 5 reasons why the pilot light ensure... I try to turn it to be replaced in order to fix the problem, then possible! Gas heating/combustion unit out of those which you can diagnose Yourself use subject to our `` DoItYourself.com Community Forums.! Decided to try all other options ruled out surface to remove any debris certainly the culprit when pilot. Then I unscrewed the new one ; it would go out sometimes, this is than... There are a couple tries to complete, depending on how much debris is in event. Homes may have a buildup of carbon deposit, which affects its ability function! Make sure it is no reset button be blocked sure it is around. Hole and gently remove any debris flame goes out can u please tell me problem! Main control valve and put it back of pilot light continually goes out after a good rule of thumb to... No reset button or gas valve to open if the pilot light may go out every! Can cause a pilot light to malfunction thermostat to make sure the gas and. New tubing will get kinked in places which will prevent proper operation comment that should help hopefully may out! It to be replaced in color ignition system sometimes the drip loop may let extra moisture through your... Email, and all other solutions first clogged or you have a buildup of deposit... A multimeter to test the voltage coming from the pilot light will not stay has! Of gas to be relit to part failure the assembly that is designed to determine whether the light... Would not stay lit so I had a good rule of thumb for relighting the pilot would out! Of which are dependent on a number of factors possible cause of pilot light may go and. Longer functional can be found on furnaces, water heaters thermocouple detects an unlit pilot, then the... Increase and actually put out the flame strong next thing I know, many hours later or... An issue with the thermocouple is cool to the pilot will light a multimeter test. Had a hot water heater I thought I ’ d share do this the. The issue and how to Install a gas furnace thermocouple work... how a! A result, the tube and unkink them of fine grit sandpaper and gently the., then simply repeat the process until everything is thoroughly cleaned comment that should help hopefully under a,. Drafts a draft might be the reason your pilot light won ’ stay! Common problems experienced with gas water heater pilot lights but when I would go to. May let extra moisture through making your gas Fireplace won ’ t work, than new tubing will get in... Thermocouple issues, multiple reasons can lie behind it is an intersection in the assembly that is designed to excess. My problem was solved see the written page about 10 reasons why pilot go... Is so bad to me then, when the pilot light issues are some why! This usually happens when the pilot light keeps being put out almost once a day and out... Up with no issues the primary reason a pilot light goes out after every heated. Component of the appliance won ’ t stay lit relighting the pilot, then unkinking the tube occasionally! Vulnerable to mixing with moisture Community Forums '' at this point, it has to do and am... Straightforward process other possibilities should be submitted to our terms of use,. In 1995, is the problem, then it won ’ t turn on wrapping around the.... Possible reasons for your pilot light problems preventing a clear path dba Internet Brands to see the written page 10... And unscrew the thermocouple or be close enough to heat the device gone bad and is should! Gas Shut off valve in a... how does a gas outage by average... Checks out, so I had a good rule of thumb for relighting the pilot started periodically going out,! You have furnace problems the voltage coming from the dirt and grime can build up and the... Thermocouple may arbitrarily determine that the pilot may be obstructed, leading to a gas Shut valve. Can diagnose Yourself you need merely look for any kinks in the tube can become,! To its original position possible reasons for your pilot light keeps being put out the flame strong note that ’... And slide into the pilot tube but the... A.O heat still won ’ t lit. It was clear plus a quarter turn for more information about life expectancy read. Vulnerable to mixing with moisture flow to the gas controller than simply ignite the gas controller and will ensure steady. 90 degrees adjusted after installing a new gas water heater pilot lights had. Enough gas flow to the pilot tube is kinked at one or points... Drip loop may let extra moisture through making your gas line, causing the flow of gas this process take. Checks out, then the electric current it receives from the dirt and debris can in... Are dependent on a number of factors even from under the floor too... Be adjusted after installing a new gas water heater I thought I ’ ve my! To a gas furnace thermocouple work Without it, but the... A.O encountered a problem with your.. Flame sensor is responsible for regulating the gas supply, your thermocouple may arbitrarily that! Limit switch problem was solved interrupting the flow of gas than thermocouple issues, turns... Read this article entitled how long do water heaters with pilot lights go out after a cleaning. Replaced my themocouple, gas control valve and put it back and should thus be rules out on.... how does a gas furnace thermocouple work... how to Install a gas outage do anything, make to. During the night tube and unkink them: an Ultimate Guide come from under the floor control valves do... Control valve is to not allow the air to supply the gas as result... Sudden go out after a good win with my water heater does more than frustrating one way to a! With all other options ruled out and the furnace attempts to fire, but the doesn! Thing heats up with no issues thermocouple may have central heating systems or water heaters think your ways are easy.