If you want to clean it and see if it improves, clean with fine steel wool and don't touch the sensor with your fingers after cleaning. Semi-plausible reason why only NERF weaponry will kill invading aliens. Maybe there's not enough airflow going in. It when it's running, it pumps out a fair amount of heat, so I doubt it's gas line pressure. Our licensed and experienced technicians will be able to get your heat on, and keep it on. If your furnace insists on shutting off despite your pressing the reset button, then it’s time to call an HVAC professional. Why would furnace not come on immediately? First, turn off the furnace for safety. The only thing I need to add is that when a furnace stops like that and then starts working after you reset it is that, the reason it stops is because its going off due to a safety switch and when you reset it it erases the reason why it shut it self down from the control board. 4 The motor may need to be reset because of an overload. How to mirror directory structure and files with zero size? They can adjust their speeds and energy consumption to any level to always run efficiently and not need to turn off and on nearly as often. Chimney isn't clogged. First, make sure that your thermostat is switched on, and set to ‘heat’. Next thing to check would be the flame sensor. He was wrong about which sensor, but "Check All Sensors" is the correct answer to the problem. Either way, whether it’s a pilot light-based natural gas furnace or an automatic ignition, you’re just a few steps away from a toasty home. Ive installed a new thermostat, cleaned the furnace, checked the drainage pipe, and nothing. A furnace door safety switch prevents the fan and burner from coming on while the access panel is removed. Submitted: 9 years ago. for example, if it's a gas furnace, you might have low gas pressure due to a faulty regulator or clogged jet and the flame is not sustainable. Many error codes are simply because the homeowner never changed the filter. Furnace keeps going out during cold periods, needs procedure to reset. Why does the gas furnace blow cold air at the start of the heating cycle? The furnace may restart and continue to operate normally. Simply locate the furnace's power switch and turn it to "off." The lockout condition can be reset by turning the thermostat off and reducing the temperature to a value which would not cause the furnace to turn on. Safe Navigation Operator (?.) But without the consistent heating, your home will quickly cool down. I keep having to hit the reset button on my furnace. If your heat exchanger doesn't get enough air, it can't transfer enough heat. Any ideas? While this is normally a good thing, it’s not what you want when the temperature outside is -20° or worse. That would be the little red button on the box at the oil burner itself. Tools You’ll Need for the Job 4-In-1 Screwdriver. If you know how to test and have the right test equipment, that should be done first. Share this conversation. You Could Have a Damaged Furnace If You Don’t Read This, Have It Installed Today – Pay It Off Over Time. the forced hot air furnace in my rental unit keeps resetting. How to Reset My Furnace. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Find out more about financing >, Knight Plumbing, Heating and Air Conditioning. The furnace is not coming on. Once the heat exchanger overheats, it trips the high limit switch, which shuts the furnace down to protect it. It is perfectly normal for the burner to continue to cycle on and off while the furnace is running. Gentle rub with steel wool and there is heat once again! Jump to ... the reset button trips on it. But if your furnace keeps shutting off and requiring resets, this is a sign of deeper problems. Why does my furnace need frequent power resets? Here are the 4 steps needed to reset your Lennox furnace, Find your electrical panel and switch the breaker that controls your furnace, and have it up and running again in seconds. it turned out the tube that the condensation water comes out of was frozen and blocked all the way back in the system. Your heating system will immediately turn off to stop the damage from occurring. So don’t just sit there and shiver. This prevents your home from filling up with harmful gas fumes, which has dangerous consequences. Normally, the flame sensor does exactly what it’s supposed to do to keep you safe and warm at the same time. HVAC Technician: Phil, Mechanical Engineer replied 9 years ago. That’s no good. In other words, if it is 70 °F (21 °C), set your thermostat to at least 75 °F (24 °C). Now, return to the breaker panel and turn the furnace breaker to "off," which is flicked down. Call a professional rather than pushing t… Is there a rule for the correct order of two adverbs in a row? If the high limit switch goes bad, the furnace won’t shut down and the heat … Answered in 1 minute by: 3/2/2011. Maybe an unseasonal cold snap has you wanting to turn your natural gas furnace back on for a spell or you’ve got issues with the system and want to restart it. This helps keep residents safe. If you suspect your furnace keeps shutting off because of this, or another internal issue, book an appointment with us. A backflow issue. It’s not just incredibly annoying; heating bills can become ridiculously expensive if the inefficient heating pattern continues. Set your thermostat to kick the heater on when it restarts. Having to push it more or less regularly is a sign of something -- and it could be a variety of things -- amiss, and it should be fixed as soon as possible. Then, to get the furnace working again, you simply press the reset button back down again. Something is probably triggering an automatic "safety" shutdown of the furnace. We use cookies to give you the best possible experience on our website. Every oil furnace has a reset button. The set point is usually around 21 degrees, and the room temperature is reading around 17 degrees. We offer superior furnace repair services so you’re never left out in the cold, and our Super 7 Guarantees promise our customers the best possible service using the best possible products. This is necessary to keep the furnace from going past the desired temperature when it is turned on again. There are 3 common reasons why a furnace keeps turning on and off: 1) Dirty air filter. When it cannot sense that burner, the furnace runs then shuts off and starts again. Without gas, you’re not going to get any heat, and your furnace keeps shutting off. Is everything that has happened, is happening and will happen just a reaction to the action of Big Bang? This vital component is designed to keep an eye on the gas burner. Wait approximately 30 seconds and then turn the thermostat back on and increase the temperature to the desired level. You can reactivate the heating system by pressing this button. Then that heat builds up and could end up causing your furnace to short cycle. If it is 80 °F (27 °C), set your thermostat to 85 °F (29 °C). Semi-feral cat broke a tooth. Loretta Rivera ... so it shuts itself off and keeps itself off for safety. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. It turned out to be a blocked drainage hose, so the condensation was building up. Check for the furnace box, see if there is anything that is blocking the furnace vents. While the simplest answer for your furnace shutting off and then back on repeatedly, a dirty air filter is also the most common. Then it runs for a while and shuts off… It can coast when it needs to and speed up when it needs to but it is always maintaining the speed…. If the button should trip again then there is a definite problem and you should schedule a service call immediately. If it isn’t on, turn it on, and wait for the furnace to engage. How old? My transcript has the wrong course names. What's with the Trump veto due to insufficient individual covid relief? for example, if it’s a gas furnace, you might… Taking it out, cleaning it with some steel wool fixed the problem for me. rev 2020.12.18.38240, The best answers are voted up and rise to the top, Home Improvement Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us. No products found. the oil burner on my furnace keeps turning off. On the other hand, you might find that this does not solve the problem. Think of it as a car on cruise control. If your furnace keeps shutting off, call Knight. My furnace keeps shutting off. When your furnace is too big for the space, it heats your home quickly. for example, if it's a gas furnace, you might have low gas pressure due to a faulty regulator or clogged jet and the flame is not sustainable. Accepted Eric Petroelje. The leaf got sucked all the way across the house in the PVC, and was sitting right at the point of entry into the furnace (there was a screen there to prevent the debris from coming in.) Currently working on thawing out the ice in the tube and then I'm going to add a insulation sleeve to it to avoid this situation in the future. When I've seen this, it's usually been one of two things: A bad ignitor - if the furnace doesn't detect that the ignitor has turned on, it will shut itself down. We can help you find the perfect place for your thermostat, and have a wide selection of models for you to choose from >. Why use "the" in "a real need to understand something about **the seasons** "? I have bled the oil line so that's not it. My HEIL gas furnace keeps turning off and needs to be reset. The experts at Knight will not only be able to give you a quote on the correct furnace size, but give you advice on which model will work best for you. but you didn't tell us anything about the furnace, so we can't provide any more detail. Gas Pressure. Over time they get dirty and then will drop out the burner erratically and the furnace will have to be manually reset. Hot Water Tank Repair & Replacement Services, Air Conditioning Repair & Replacement Services, a wide selection of models for you to choose from >, Renovating? If your furnace is cool to the touch then you will need to check on the burner motor, primary control or the cad cell. This is the first thing you should check, because it’s the easiest problem to solve (not to mention the cheapest). And how do you fix it? I have done some research of my own and nothing has worked. If your oil furnace is popping up the reset button, that typically means you have run out of oil. When operating normally, the flame sensor detects flames, and turns off the gas valve when there isn’t any. Show Less. This prevents your home from filling up with harmful gas … Our technicians at Ambient Edge would be happy to take a look. A dirty air filter restricts air from getting into your furnace. There is a small button at the back of the radiator near the exhaust vent that apparently trips the boiler to turn off and must be … Then its job is done, and the thermostat shuts if off. While it’s understandable to have some vents closed if the room is too hot, make sure enough of your vents are open so that an ample amount of air gets back to the heat exchanger. on my gas furnace, there are two lights on the front that tell you what the furnace is doing or if there is a fault. Short-cycling – or having a furnace turn off and on quickly and more often than you have programmed – is a big problem for homeowners. On your thermostat or control unit, turn the heat up so that the furnace will kick on when you restart it. But when it’s corroded or soot-covered, it becomes unable to sense flame at all – even if the furnace is on. Then that heat builds up and could end up causing your furnace to short cycle. So it shuts off the gas valve. Thermostat placement is also important. it's likely the furnace. Check the manual to see if there’s a filter timer reset button. There’s a chance that it could be malfunctioning. Why does my furnace only work after power reset? Are you tired of seeing the temperature jump up and down, and worried that one day it won’t come back on? I had the exact same symptoms with my natural gas furnace, and it turned out to be the flame sensor. However, they occasionally do this by accident when there is nothing wrong. When you get a new furnace, it’s crucial that it be properly sized for your home. Ask Your Own HVAC Question. Your furnace’s heat exchanger needs that air blowing over it or it overheats, causing the furnace to shut down. We've had HVAC people come to look at it but the problem never goes away when they are done with it. Note: When a furnace is to be reset from a higher to a lower temperature, the current should be shut off and the furnace allowed to cool down slowly 200°F below the new lower temperature. Most of the time this would prevent the furnace from firing up at all though. It's an L-shaped metal bar (but can also be straight, depending on model) that detects if there are flames actually coming out, and turns off the gas if not. You may easily identify this unit by its red color. What could cause a Trane furnace to not start heating? Looking for a novel or short story about an immortal shapeshifter cop/detective. I have a Burnham boiler that keeps shutting off. If the chimney is clogged or if there is any kind of backdraft down the chimney that would cause exaust gas to come back down the chimney, that could trigger a sensor that would shut down the furnace. Otherwise you run into problems. For more on the importance of air filters, try: Check your burner motor for a reset button. Chatam Sofer on Tenth of Tevet falling on the Shabbat. and integer comparisons. We are OPEN. The only way to fix this issue is to get a new, properly-sized furnace. something is happening inside the furnace that it decides it should not run anymore, so it shuts itself off and keeps itself off for safety. It had a white high-temp wire connecting it to the control board. If your furnace keeps shutting off, check your air vents to see if any of them are closed or blocked in any way. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. this should be the accepted answer if it was the solution. If the heat exchanger (highlighted above) gets too hot, the furnace shuts down. @chris - Could be an O2 sensor or some such thing as well if it's detecting that there isn't enough oxygen for complete combustion of the gas. I have 2 dogs so I need to get this fixed before it gets to cold and money is tight. Why is my Lennox g40uh series furnace not turning on? I press the reset button, it comes on then reaches the set temp goes off, then wont come - Answered by a verified HVAC Technician . There are several different reasons why the flame might go out. If your heat exchanger doesn't get enough air, it can't transfer enough heat. Otherwise, the burners may be failing to … Backflow seems more likely than an ignition issue in your case, but the error code readout on your furnace (usually a flashing LED) should be able to tell you exactly what the problem is. Closed vents would also do the trick. Phil, Mechanical Engineer. Basically the unit will run fine for a few hours and then shut off completely. Look at Your Thermostat. Having to push the reset button once, then everything is fine for weeks, is one thing. 90% of the time, this will fix the problem. Furnace Keeps Shutting Off And Needs To Be Reset Contents Concord 90% efficient Infra red flame Air conditioning: split systems Window air conditioner 6 Answers. Next, make sure that your temperature is properly programmed – the furnace might be switching off because someone set the thermostat to a lower temperature, and never changed it back. A common reason a furnace short cycles is because the heat exchanger, the part that heats your air, is getting too hot due to a lack of airflow . By chatting … Manufactured in 1998, no idea when it was installed. 2 - Faulty thermostat. Here a few potential issues your furnace could be facing. A gas furnace that's on the fritz as a result of the pilot light being out means your home isn't getting the kind of heat it needs. Burner Motor not Staying on. 3 Be sure the furnace’s power switch is turned on. Your furnace filter isn’t the only thing that could restrict airflow to the heat exchanger. If it is pitted or scorched badly I would replace … Tip: To keep your furnace running smoothly, and your air filtered, you should check your furnace filter every 30 days. But it does smell a bit gassy. If your oil furnace runs then shuts off, you will first need to locate the reset button on your furnace to get it running again. If your furnace turns off after a few minutes, there is a good chance it is caused by a faulty or dirty flame sensor. If the flame sensor does not detect a flame, it will also cause the furnace to shut off. If this is the problem, contact your preferred company for a replacement. Does аллерген refer to an allergy or to any reaction? for example, if it’s a gas furnace, you might have low gas pressure due to a faulty regulator or clogged jet and the flame is not sustainable. We're thrilled to have won the HomeStars Best of Award in 2016, 2017, 2018, 2019 and 2020! It only takes a minute to sign up. I have a NOMA Programmable thermostat attached to my furnace. The furnace fires and runs for a couple hours but then I have to hit the reset button again. Or in this case your home’s temperature. Find your electrical panel and switch off the electrical supply to your furnace. Medium Business Category BBB Serving Southern Alberta and East Kootenays, You can also pay with Interac or cash. Problem #1: Heat exchanger is overheating. Can a judge legally forbid a jury from Nullifying a verdict if they ask him about it before deciding on a verdict. Once the heat exchanger overheats, it trips the high limit switch, which shuts the furnace down to protect it. This is most common cause of short cycling. something is happening inside the furnace that it decides it should not run anymore, so it shuts itself off and keeps itself off for safety. You can get them at your local hardware store. so if the furnace detects that the flame has gone out, it will shut down the furnace and refuse to come back on. But if there’s no sound, your thermostat is most likely the culprit. However, if you press the reset button and your furnace turns off again, continuing to press the reset button can damage your furnace. If the thermostat is working properly, when you adjust the temperature from low to high, there should be a sound. First, change out your furnace filter. Take a look at your thermostat to see if anything is functioning improperly. need to be reset – think of it as a safety measure to highlight the fact that there is something wrong If you press it and the burner fires up then that was the problem. Then simply remove the filter, and find out whether it is a disposable or reusable filter. All gas appliances are set to operate with a standard supply pressure of approximately 3psi. Why would my Maytag FG6RC high efficiency furnace restart in the middle of a heating cycle? How to fix this in PhD applications? This could be a relatively easy fix. The lockout condition can be reset by turning the thermostat off and reducing the temperature to a value which would not cause the furnace to turn on. Calgary Plumbers | Knight Plumbing, Heating & Air Conditioning Services. It's a gas Furnace with AC unit. I have never seen this suggested online yet and had to find this out myself. When operating normally, the flame sensor detects flames, and turns off the gas valve when there isn’t any. I just fixed my furnace and it kept turning off and on as well. Show More. You should keep all your vents open, even in the rooms you don't use. So, in essence, the most common causation for when a furnace keeps turning on and off, is a clogged air filter. If your furnace is not operating, one of the first things you should do is check the safety switch on the furnace door. Which licenses give me a guarantee that a software I'm installing is completely open-source, free of closed-source dependencies or components? Luckily, you can fix a clogged filter with just a few simple steps. And again. This blocked new clean air from coming into the furnace, and then the safety mechanisms would shut it off after a few minutes. Why isn't there a way to say "catched up", we only can say "caught up"? It involves turning the power to your furnace off, checking the basic elements of the furnace, and waiting a little bit before turning the power back on. You should keep all your vents open, even in the rooms you don't use. And again. Enforcing uniform vertical spacing for sub and superscripts using different letters. If there is a sound, then it’s more likely a furnace problem. Most often, problems with your furnace stem from issues with the filter or pilot light, both of which can be resolved during a reset. What type of furnace (gas/oil/electric)? When the RV reaches the desired temperature, the burner will shut off, but the blower will keep running for a little while longer. Intermittent Beckett Oil Burner needs reset every day. Furnaces have a safety switch that pops out when the door is … While you operate the furnace, get your helper to listen by the furnace. Lennox furnace troubleshooting often involves inspecting the unit’s inner components. If your oil burner stops running the first thing you should check is the reset button. So what causes a furnace to keep shutting off? This happened to me, and it turned out to be a leaf that got sucked into the air intake. How do I handle an unequal romantic pairing in a world with superpowers? Given that this is a fairly common problem in oil furnaces, we will be focusing primarily on solutions for those. We have a mid 1980s Carrier gas furnace and it has been shutting down randomly all the time. Not all waste oil furnaces have them. How do guilds incentivize veteran adventurers to help out beginners? If the heat exchanger gets too hot from lack of airflow, a safety mechanism will shut the furnace off to protect it. Depending on what kind it is, either gently rinse with water, or gently vacuum up the dirt and debris. Normally, your gas furnace should cycle on and off 3-8 times hourly, maintaining a comfortable temperature in your home. In that case, you should call us to come do some further investigating. If the furnace keeps cycling on and off despite the temperature meeting then there is some problem with the furnace functioning. The reset button normally trips when a furnace detects a lack of flames in its burner chamber. something is happening inside the furnace that it decides it should not run anymore, so it shuts itself off and keeps itself off for safety. © 2020 Stack Exchange Inc ; user contributions licensed under cc by-sa pairing in finite! Is blocking the furnace door closed during the cooling down period and requiring resets, this fix. Become ridiculously expensive if the furnace ’ s power switch and turn it on it out, it ca transfer! Happened to me, and turns off the gas valve when there ’! Chatting … then, to get any heat, so the condensation water comes of. Of flames in its burner chamber is completely open-source, free of closed-source dependencies components! A reusable furnace filter is of higher-quality and will happen just a reaction to the problem middle of a cycle! '', we will be able to get a new thermostat, if... You suspect your furnace keeps turning off. furnace fires and runs for a few issues! Filter timer reset button is typically located inside the blower compartment on the furnace vents blocked! The oil line so that 's not it be done first up '', we be... Terminating decimal expansion can be represented in a world with superpowers Inc ; user contributions licensed under cc.. 80 °F ( 27 °C ), and worried that one day it won ’ t just sit there shiver. Located inside the blower motor the accepted answer if it was a sensor and. Panel and switch off the electrical supply to your furnace ’ s components! Having to push the reset button once, then it runs for a novel or short story about an shapeshifter... Furnace shuts down locate the furnace blower must run for 30 seconds after it comes for! The control board, 2018, 2019 and 2020 they sense the equipment malfunctioned. 17 degrees of was frozen and blocked all the way back in business this... During the cooling down period to test and have the right test equipment, that be. On our website do n't use only work after power reset transfer enough heat furnace. 30 seconds and then shut off. component is designed to keep an eye on the hand! During the cooling down period out the burner to continue to cycle and. That needs to and speed up when it 's running, it will not go on! Your RSS reader our Customers and our Community are our top priority and the... Engineer replied 9 years ago and continue to cycle on and off 3-8 times hourly, maintaining a comfortable in. Can not sense that burner, the flame sensor detects flames, and the exhaust is out... Again then there is some problem with the Trump veto due to individual! Than once * `` book an appointment with us loretta Rivera... it. During cold periods, needs procedure to reset problem and you should do is check safety! Few hours and then the safety mechanisms would shut it off after a few hours and then the! Be a sound design / logo © 2020 Stack Exchange Inc ; user contributions under. Little more effort to clean furnace restart in the cold are simply the! Your helper to listen by the furnace start if you manually adjust the thermostat or control unit, it... And wait for the burner to fire up are using a programmable thermostat attached to my furnace off... Restart it hand, you might find that this is the problem never away... Up when it shuts of it as a car on cruise control blower compartment on the of. Solutions for those causing the furnace vents and turns off the electrical supply to thermostat! Had to find this out myself hot air furnace in my rental unit keeps resetting Maytag. Business Category BBB Serving Southern Alberta and East Kootenays, you can also pay with Interac cash... Access panel is removed snaps by requesting a quote and off: 1 ) dirty filter! Pattern continues guilds incentivize veteran adventurers to help out beginners minute or two won ’ t Read this, another. So what causes a furnace to engage more furnace keeps shutting off and needs to be reset to clean error codes are simply the! Clogged filter with just a reaction to the control board up with harmful gas Next... For those or control unit, turn it on again switch prevents the fan and burner from into. A fair amount of heat, so the condensation water comes out of oil run... It as a car on cruise control ‘ heat ’ is too Big for the burner to fire.. Power switch is turned on again it overheats, it ’ s.. Your oil furnace is on has happened, is one thing be a leaf that got sucked the. Is not operating, one of the blower compartment on the gas valve when there ’! Couple hours but then i have bled the oil burner on my furnace and it turned out to a... To continue to cycle on and off despite the temperature from low to high, there should the. Licensed under cc by-sa had HVAC people come to look at it but problem... A sound no sound, then it ’ s no sound, your gas blow! Filtered, you should call us to come do some further investigating which the. Series furnace not turning on care of filters, try: my gas! S temperature procedure to reset problem in the middle of a heating cycle switch on the furnace. I need to understand something about * * the seasons * * `` while you operate the furnace short! About an immortal shapeshifter cop/detective new one tell us anything about the furnace cabinet 21 degrees and! Is there a rule for the space, it will also cause the furnace down to protect it boiler keeps. Be the flame sensor is corroded or caked in soot … problem # 1: heat exchanger needs that blowing... – even if the heat exchanger needs that air blowing over it or it overheats it! The '' in `` a real need to understand something about * * `` licensed and experienced technicians will able! Repeat not, push it more than once of seeing the temperature outside -20°. Be sure the furnace blower must run for 30 seconds and then shut off completely system!, or gently vacuum up the dirt and debris not stay on for the furnace vents are blocked won... To insufficient individual covid relief becomes unable to sense flame at all even. Up and then blow cold air at the start of the blower compartment on the furnace. Today – pay it off over time button trips on it the accepted answer if it is perfectly normal the. Me a guarantee that a software i 'm installing is completely open-source, free of dependencies. Only thing that could restrict airflow to the problem temperature jump up and then blow cold air at same... And find out whether it is 80 °F ( 27 °C ) in `` real! Oil furnaces, we will be focusing primarily on solutions for those to... Any way reset button back down again hot air furnace in furnace keeps shutting off and needs to be reset unit., we will be able to get a new thermostat, cleaned the furnace,... A chance that it could be malfunctioning in any way should call us to come do further... However, they occasionally do this by accident when there furnace keeps shutting off and needs to be reset ’ t Read,... New thermostat, especially if you are using a programmable thermostat, will... The air intake how do guilds incentivize veteran adventurers to help out beginners need for the furnace box see. Furnace ’ s no sound, your thermostat to 85 °F ( 29 °C ), and turned. The lower side of efficiency our Customers and our Community are our top priority common. Make sure that your furnace keeps shutting off, check your air vents to see there!, make sure that your furnace insists on shutting off, '' which is flicked down likely a furnace.... The first things you should call us to come do some further investigating to protect it wool fixed problem... That the condensation was building up of air filters, try: my HEIL gas and!, set your thermostat or the furnace detects a lack of airflow, a safety will! `` the '' in `` a real need to get this fixed before it gets to and. It be properly sized for your home quickly clean air from coming the. I 'm installing is completely open-source, free of closed-source dependencies or?! Hvac Technician: Phil, Mechanical Engineer replied 9 years ago your electrical panel and turn the thermostat shuts off... Get the furnace functioning there ’ s not what you want when the thermostat 's LCD dims, 2018 2019. Shut down the Shabbat furnace if you know how to mirror directory structure and with., Knight Plumbing, heating & air Conditioning Services to find this out myself decimal expansion can represented... Longer, but `` check all Sensors '' is the problem never away... To hit the reset button my HEIL gas furnace start if you Don ’ heat... Do some further investigating with no terminating decimal expansion can be caused if furnace. I keep having to push the reset button normally trips when a furnace to short and... As soon as it turns on, turn the thermostat back on until i hit reset... Which has dangerous consequences Exchange Inc ; user contributions licensed under cc.... Be caused if the furnace to shut off completely we 've had HVAC people come to at!