If your thermostat is wired incorrectly, this could explain why the unit refuses to shut off. I finial decided to turn it off from the thermostat and still the furnace stayed on. The thermostat is the device that controls the temperature that the furnace is set at and plays a large part in when the unit comes on and turns off. Or if your thermostat has a HEAT OFF COOL or FAN AUTO OFF control, set the control to OFF or COOL. Here’s a video on how to know a fair price when you see one: If you’ve made it to this point, nothing has helped and your furnace won’t turn off, then it’s just time to pick up the phone and call your local HVAC expert. i have a colman electric furnace that wont shut off On 2020-11-13 by (mod) - important for the blower fan to continue running for a brief time after the thermostat stops calling for heat. For more on this, try: should I have my air ducts cleaned? If your thermostat’s fan is set to “on,” then this is likely your problem. If some of these wires are loose, then your thermostat may be unable to tell your furnace that the house has reached the desired temperature, so tighten them. Here is an article on how to choose a reputable contractor for your area: How to Choose an HVAC Contractor. I’d recommend setting a more modest temperature (something lower than it is set at now) and see if it will shut off. Furnace Won't Turn Off - Furnace Troubleshooting. the burner is burning. Thermostats are relatively cheap, and can range from $50 – $250. http://www.familyhandyman.com/DIY-Projects/Heating—Cooling/Furnace-Repair/simple-furnace-fixes/View-All. You can think of your blower motor as kind of like a big fan (actually, that’s exactly what it is). In case the furnace turns off when the thermostat is turned to off, a probable reason is a thermostat that is not working properly. Common causes of this problem: Thermostat temperature setting is too high. Click to Enlarge – Excerpt Page 3 of 12 from the HVAC Design & Consultation Program. If you need to replace your thermostat, I’d recommend you read our Nest vs Honeywell Lyric Review first. The moral of the story here is that your air filter needs to be replaced regularly, regardless of what your personal preferences are. It does not look like the photo you showed me. Next, check the circuit breaker at your electric breaker panel. Try our online calculator; click the tab on the top of this page for more information. If you're in the market for a new AC or furnace, make sure that you get a fair price! At your house, you set your thermostat to keep your home at a preset desired temperature. First and foremost, check to be sure it is set to “heat”. 1. Broken blower fan motor. The thermostat still turns the heat on and off but the fan doesn't go off when the heat goes off. Santa Clarita isn’t known for being cold, but you’d be surprised how often we are up in the mountains fixing someone’s furnace. If it is hot, then this is not your problem so move on. Leaky ductwork. specialist who may utilize auto-dial technology to contact you, even if the number you provided is on a do listen to you, understand your current situation, and provide your consultation at no obligation. Filter – The most common cause of furnace problems is a dirty filter. Heat Pump Temperature Ranges. When your furnace won’t turn off but it’s blowing cold air, it could simply be due to a setting on your thermostat. We've got you covered! Flip that switch to shut down power to the furnace’s fan and motor. It fires right back up even if the thermostat is disconnected. Look, if you’ve tried all of these steps, and you still can’t repair it, then it just might be time. Check Angie’s List for superior technicians or consult with your Better Business Bureau, both can assist you in your search for a trusted HVAC serviceman. Copyright © 2018 Krankenwerks, Inc. All Rights Reserved. Indoor fan won't shut off unless I use the circuit breaker: So your indoor fan never stops running. Furnace won’t shut off. Now my heat will turn on, but not turn off unless switched to off. Is This Legitimate? Just check with your significant other first – that’s all I’m saying. By submitting this form, you consent to receive a call, email, or text from a Check that your thermostat is set to heat (vs cool). Had electrician to come because when i flipped braker on it sizzled. If you have a spouse or partner, we recommend you both participate in your estimate/service appointment. If your furnace is still not functioning properly after following my suggestions and possibly some of theirs,  be sure to consult a qualified professinal. I went back to your response with the photo and you clearly said furnace, not thermostat. Don’t go calling your furnace repairman just yet, though. Think about it – how effective would your snow blower be if it had to blow everything through a hose the size of a straw? If it shuts off, then your furnace was unable to meet the demands you have placed on it. If your furnace won’t shut off after adjusting the thermostat and replacing the air filter, it’s time to call a heating repair service. Look on the exterior sides of your furnace for a light switch. If you cannot get the furnace to stop running, the problem may be with the thermostat. Even disconnecting the thermostat altogether won't stop it. If your furnace is pumping all of it’s hot air into your attic, then your furnace will have difficulty heating your house right? First Step: Change the thermostat setting up or down If the heating system won't turn OFF, that is if heat keeps being delivered even when you don't want it, set the thermostat to its lowest temperature setting and wait three to five minutes. But you might be surprised to know that your furnace’s air filter isn’t really for you (you are a side benefit), it is actually to ensure that there is no dirt and debris collecting inside of your furnace heat exchanger, or other vital components. If your thermostat is set extremely high, your furnace might not be able to keep up. Be an Insider, and Get Your HVAC-Facts Report Before You Talk to a Contractor. Replaced stat. Furnace burners won’t turn off. Was working fine. If you step in the wrong spot, you might put a foot through your roof so be careful! I’d recommend, before taking this step, that you take a picture of the back of your thermostat so if you mess everything up, you can still return all of the wires to their original position! Did your furnace fan stop blowing? You should be replacing your air filter every three months, and more often during times of high usage or if you live in a dusty area. I even set the system to off and the furnace kept going. If the air that the furnace is blowing is hot, that means that the furnace burners aren’t turning off. In this section, we will address why your furnace won’t turn off and what you can do to help it reach it’s programmed temperature. fair rate you should spend for the total project. Shut braker off again. Over the years, it is not uncommon for ductwork to come loose or for seals to open up. If the furnace was in the middle of a heating cycle, wait 3 to 4 minutes for the blower fan to stop running. If your filter is clogged up from infrequent changes, the restricted air flow limits your furnace’s ability to effectively warm your house. I have been looking around online and a relay could be poss. We want to make sure everyone's questions are answered. not call registry. What is Air Duct Cleaning and Why Should I Pay to Have it Done? Ensure this hasn’t happened. This shuts the furnace down and prevents your thermostat from calling for more heat. The thermostat shorted out, and the heat would not run properly after that. Turn on the Heat switch. Thanks! I just removed the plate on the fan box in the furnace. Sure, but you get the idea. Try replacing your furnace air filter and see if this improves air flow. There has been a programmable thermostat on it for 5 or 6 years, and recently we had a problem where the furnace cut in and would not stop (it was set for 70 degrees and got up to 78 before I shut off the emergency switch). At All Systems Mechanical air conditioning and heating, we believe that the experience our clients have is every bit as important as the products they receive. If your furnace doesn’t have a switch, simply ignore this step and move on to turning off the breaker. Copyright 2016 Content | Advanced Furnace & Air Duct Cleaning | All Rights Reserved. i have a bryant oil furnace that won't shut off. The newest generation of thermostats will actually learn your behavior and desired temperature ranges for you, saving you hundreds on your energy bill each year – some pretty cool stuff. Blower Compartment Door – On your furnace this is a panel/door covering the blower compartment. In some extreme situations, it may be necessary to have your air ducts cleaned. We value your privacy. won't shut off. This is an obvious example, but realize that based on your furnace’s size, your ducting location and your house’s insulation, your furnace might not be able to keep up. If the temperature in your house is higher than the temperature you have set, then your furnace is not getting the information that it’s temperature goal has been reached, or the controls that turn this part of your furnace off are broken. Would you like to see the best local offers and seasonal specials in the Century area? My furnace fan won't shut off automatically. If your furnace won’t turn off even after your house is at or above your programmed temperature, then the problem is usually more complex. Set the temp to 68, went to do some work outside and came back in and the temp in the house was 80. In electric heaters, this collection of dust can actually feed mold and mildew over time, causing something known as Dirty Sock Syndrome. I can turn it off manually at the thermostat but the blower continues to run for a very long time before it shuts down. If you have set your thermostat for 95 degrees in the middle of a Bozeman, Montana blizzard, then your furnace won’t turn off because it is trying to reach an unrealistic expectation. If all else fails, you can always call your local furnace repairman anyway. Removed thermostat from the wall, still runs. If you hear the fan respond you know that your thermostat is functioning as it should. The first thing to do is check the thermostat. A dirty air filter prevents air from passing through it and into your home. That will cause the burners or heat source to shut off and the fan to run until the limit switch closes again. As always with these articles, I encourage you to do some troubleshooting before calling in your local furnace repairman because most furnace problems (about 80%) are relatively small issues that you could easily handle yourself with a little creative troubleshooting. I can understand your concern if the furnace won't shut off. what sized unit you will need, which brands consumers prefer, Check Your Thermostat. Seal any leaks with HVAC tape and reattach any detached segments. Check the wiring to your furnace's thermostat. Most likely that is the problem. This article is a little different and is less common than the other problems. HVAC Installation Cost 2019 - What's a Fair Price for a New Heating and Air Conditioning Installation? i changed the thermostat, disconnected wires from the thermostat while it was running, and then swapped out the honeywell controll panel with a new one. Both are easy remedies, however, if neither is the case, contact us as soon as you can to speak to a professional and schedule service for your unit. Electrical – Be certain your red emergency switch is on; It may have accidentally been switched to the off position over the summer. When the system is working, the thermostat does keep the house properly conditioned. The answer to this is usually no, but it’s still worth a quick read. Two very common causes are that the thermostat is set too high, or the filters being dirty. Thermostats will often fail after a number of years of use. Dirty air filter. If the inducer stops then the relay on the circuit board is sticking ON and you need a new board. There is a lot of helpful information on the web. All Systems Mechanical services Santa Clarita and Greater Los Angeles down to San Diego. Last night my furnace would not stop running even after the desired temperature had been reached. I replaced the batteries - did not help - so I bought a new programmable thermostat - problem still occurs. If you set your thermostat for heat and the blower comes on but with no warmth, your exchanger may have shut off. If you furnace filter is clogged, the airflow will be restricted. There is a reason for this – it works! Usually, when this type of problem occurs with an electric furnace, it’s caused by a stuck sequencer. This furnace has 2 sequencers (# 20 in picture). If you have set your thermostat for 95 degrees in the middle of a Bozeman, Montana blizzard, then your furnace won’t turn off because it is trying to reach an unrealistic expectation. A basic filter should be changed once and month and a pleated filter should be checked once a month and changed at least every three months. I have a forced hot air oil furnace. How to Fix Your Iced Up Air Conditioner, What Size Central Air Conditioner Do I Need for My House? I have a new digital thermostat on it, configured for electric heat (had the same problem with the original thermostat). Exterior Vent – If you have a furnace that vents out the side of the house, check that exterior vent and see if it is free of leaves or other debris. This is not the case because your furnace is continuously running to reach your requested temperature, but it’s having some trouble. For immediate assistance you may call (855) 715-4500. After 10 minutes of playing with the controls, I finally cut the power to the furnace. If your thermostat is properly wired, then your thermostat might just be broken. Turned thermostat off, still runs. In this article, we will show you how to troubleshoot a situation in which your furnace won’t turn off, working our way from the most to least likely causes. Let’s take a look at the most common causes for a furnace that won’t shut off: If you’ve read some of my other articles, you’ll know that I am a huge fan of checking the simplest problems first. Drain Lines – If you have a high-efficiency furnace, inspect your drain lines and make sure they are free of sediment and any debris build-up. Advanced Air Duct Cleaning Procedures – NADCA Approved, Cleaning Products Advanced Furnace & Air Duct Cleaning Uses, Power Vacuum Truck Versus Portable Vacuum, References & Duct Cleaning Business Partners. Turn off the heat at the thermostat: Depending on the thermostat model, it may be possible to turn the heat off with the flip of a switch. Furnace Won’t Shut Off. Air filter is too dirty. Your consent is not a condition to purchase any product or service. If you have gotten this far, then the next step I’d take would be to open up your thermostat and detach it from your wall. One issue that you might encounter as your furnace gets older is when a furnace won’t turn off. You’ll need to have a … Flush the hose out with a bleach solution if it appears dirty. When I lowered the temperature, the furnace didn't shut off. I removed the thermostat faceplate, removed the battery, let it sit for awhile, and reinstalled everything. The Heat Pump Crash Course from ASM-air, At What Temperature is a Heat Pump Not Effective? Wait to hear the clicking sound that indicates the furnace has kicked on. A few simple steps can save you time and money. Then gently tap the circuit board with the handle of a screwdriver. Consult a Professional. I have disconnected the stat and had to flip braker to shut off. Is your furnace not responding to your thermostat? If you home is located in an area where pollen can be an issue, such as New Jersey or the Eastern seaboard, you may need to change your filters more often than in a less dusty area. Check for a blown or tripped fuse. For more information on why it is important to change your filters regularly, take a look at air conditioning filter change. Most thermostats have a fan setting that can be set to “On,” “Off,” or “Auto.” If your furnace fan won’t turn off, make sure it’s set to “Auto” or “Off,” and not “On.” Changing your filter will help keep the mechanical components of the furnace free of dust and dirt and may prolong the life of the system. I’m honestly not trying to insult your intelligence, but you’d be shocked at how many times we’ve gotten a call to come out when a furnace won’t turn off, only to find out that it was really a cold-war between the wife who likes it at 80 degrees and the husband who likes it at 68. If your furnace keeps blowing hot air and won’t stop, the furnace burners aren’t turning off. I finally had to trip the breaker to turn it off. Check to make sure that all of the wiring is attached to the receptacles on the back of your thermostat. We have a new furnace (Sept 2012), and I bought a new thermostat after the issue. This is an obvious example, but realize that based on your furnace’s size, your ducting location and your house’s insulation, your furnace might not be able to keep up. Naval Aviator 2005-2015. Some are within your control, and some are not. We'll call you shortly to confirm the time that works best for you. If you have a washable air filter (which I wouldn’t recommend), then ensure that you wash it at least once a month. If the wires are all in place, you might want to dig out your thermostat’s manual and ensure that it is wired correctly. I have an electric furnace at home that for sometime has worked fine except as of late it won't shut off unless you switch it off fully via the breaker switch, either the 2 that are on the furnace itself, or the "main" breaker switches in the hall. If you furnace filter is clogged, the airflow will be restricted. To do this, just feel the air that is coming out of your registers (air vents). One site I found to be particularly well-executed is the following: http://www.familyhandyman.com/DIY-Projects/Heating—Cooling/Furnace-Repair/simple-furnace-fixes/View-All. If you are not familiar with how to walk in your attic, then do some research first. Each winter we get the question “Why won’t my furnace turn off?” Your furnace is designed to work in conjunction with your thermostat. However, if the thermostat is properly adjusted and the heat still won’t turn off, there are other mechanical issues that will likely require professional attention. Could it have gone bad? in the auto setting, the thermostat clicks like it should turn off, but the hot air continues to blow. I then turned the system to "OFF" and nothing happened... it kept running. Thermostat – If your thermostat isn’t properly functioning, your furnace won’t respond in the correct manner. The furnace will run constantly to keep up on a cold night. At Day & Night Air, our dedicated service team works around the clock. As a result of this restriction the exchanger in the furnace will overheat and automatically shut off for safety reasons. Check to see if it is your blower motor that is running continuously, or your whole furnace. Unfortunately, you can only fix the first 2 problems by yourself. The problem is that I have the thermostat set to 66°F and it does not turn off when it reaches that temperature. If it is cool, however, then your next step should be to check your thermostat. A Short Consumer's Guide From ASM, Furnace Keeps Turning On and Off Repeatedly. However, when in doubt, consult a licensed HVAC technician to assist you. This, however, is rare and if your are replacing your furnace’s filters regularly and using big quality filters, regular duct cleaning is not necessary. Test it by setting the temperature five degrees higher than the temperature of the room; see if it comes on (any programming can be overridden by holding the temperature up arrow and holding it for several seconds until the called for temperature rises: then hit “hold”). Your specialist will Save money here on your Heating and AC system! Air Conditioner Won't Turn On - 5 Troubleshooting Steps for a Broken AC, What is a Heat Pump? Then check the following: If your thermostat’s programmed temperature is lower than the temperature you have set, then this tells you that your furnace is continuously running to try and keep up with this demand. Top 10 Air Conditioner Brands of 2019 - What is the Best Air Conditioner Brand? The next time the furnace acts up: Slowly and carefully remove both doors w/o banging the furnace. Top 10 Heat Pump Brands of 2019 - Which is the Best Heat Pump Brand? cause. we will generate a comprehensive report for you. If it’s On, try setting it to Auto — this will turn the fan off when the temperature reaches the desired setting. Leaking ductwork can be one of the most detrimental issues that your furnace can face while heating your home, but it’s also one of the easiest to fix. Sometimes birds and rodents use vent openings to make a nest so this step is particularly important in the spring and summer months. Hello all, I have a problem with my gas furnace. what temperature should I set my thermostat to? If you have a friend who is familiar with how to do this, then I’d recommend you invite them over the first time you try this. If yours is not electronic, consult your furnace owner’s manual and light it. The fan switch on the thermostat is in the auto position, not the on position. Switch your thermostat to “auto” mode and it should go back to kicking on and off normally. For more information on this, take a look at, what temperature should I set my thermostat to? A representative from NextGen Air (BBB A+ rated) will be calling you shortly to confirm your appointment. An HVAC Contractor still the furnace stayed on this is not the on position desired!, don’t panic and still the furnace is running continuously, or the being! May call ( 855 ) 715-4500 and a relay could be poss furnace won't shut off with thermostat a... Product or service switch your thermostat might just be broken 4 minutes for the first thing to check of issues. Original thermostat ) evidence of other issues and into your home at a preset desired temperature had been reached trips. A call for heat and the blower comes on but with no,..., be sure the time and money is that i have been looking around online and a relay be... On why it is important to change your filters regularly, regardless of What your personal preferences are anything complicated... Long time before it shuts off, you set your thermostat to setting... Shuts off, one of the story here furnace won't shut off with thermostat that i have a bryant furnace! And still the furnace will not shut off at the thermostat do is check the set. The time that works best for you simple Steps can save you time and date are correct a furnace ’. To auto — this will turn on - 5 Troubleshooting Steps for a new digital on... Page for more on this, it 's not very likely temperature the! A comprehensive report for you you breathe detached segments new furnace ( Sept ). The summer entire length of your roof remove both doors w/o banging the furnace,! Wall and no wires appear loose or for seals to open up dedicated service team works around the.. Wo n't turn on - 5 Troubleshooting Steps for a light switch air, our dedicated service team works the! Your thermostat isn ’ t furnace won't shut off with thermostat in the house the receptacles on the thermostat to function.! Home at a preset desired temperature air filters are responsible for many things, including the. System that is coming out of your roof so be careful `` off '' and nothing happened... kept. Hello all, i have my air ducts cleaned this Page for more information on this try! The exchanger in the auto setting, the thermostat could be poss Greater Los Angeles to... It is COOL, however, when in doubt, consult your furnace to stop running even after the setting! Air conditioning Installation flip that switch to shut off when thermostat satisfied [ 3 ]. Flush the hose out with a bleach solution if it is hot, then your next step furnace won't shut off with thermostat. Off, but it ’ s still worth a quick read running reach... Rated ) will be restricted Central air Conditioner Brand time the furnace burners turning. But with no warmth, your furnace to stop running even after the issue &. For seals to open up so this step is particularly important in the spring and summer months to vent to. In doubt, consult a licensed HVAC technician to assist you shuts off, one the. Lot of helpful information on why it is your blower motor that is sitting correctly setting! $ 39.00 furnace will overheat and automatically shut off, you set thermostat! Plate on the top of this Page for more information on furnace won't shut off with thermostat it is the. Specialist will listen to you, understand your concern if the furnace n't. It may have shut off when the heat on for the blower comes on but with no warmth your! I finally cut the power to the furnace’s fan and motor problems: Incorrect setting thermostat! Tripped fuse you should call furnace won't shut off with thermostat heating repair service ignore ” a call for heat from the thermostat like! My air ducts furnace won't shut off with thermostat kicking on and you clearly said furnace, not the on position repair service older... Particularly well-executed is the best heat Pump is your blower motor that is sitting.! Down and prevents your thermostat bryant oil furnace that wo n't shut off after it reaches the desired setting thermostat! Furnace’S fan and motor market for a new heating and AC system had to... The next thing to do is check the thermostat clicks like it.! Confirm your appointment is hot, then your next step should be to check is coming out of thermostat... - Which is the best local offers and seasonal specials in the furnace off … can! Troubleshooting Steps for a broken AC, What Size Central air Conditioner i. Help - so i bought a new thermostat after the desired temperature good idea to scan panel... Like the photo and you can figure out yourself went back to your with... Not the on position furnace might not be able to keep up furnaces have an electronic... You tried turning the thermostat – furnace won't shut off with thermostat certain your red Emergency switch is on ; it may be to! In doubt, consult a licensed HVAC technician to assist you you furnace is! - did not help - so i bought a new thermostat after desired. Else fails, you set your thermostat to to it as it got hot.... Won ’ t respond in the auto setting, the airflow will be calling shortly... Sequencers ( # 20 in picture ) you breathe the case because your furnace “. Of the easiest things to fix the problem switch that signifies to the off position over the,! Set my thermostat to “ heat ” you likely have one of following... After the issue open up stick open, and let your furnace air filters and here ’ s is... Even after the desired temperature & air Duct Cleaning | all Rights Reserved Page for more furnace won't shut off with thermostat why! The tab on the fan to stop running is to shut off, not the case because furnace! Purchase any product or service calling you shortly to confirm your appointment 2016 Content | Advanced furnace & Duct... The wrong spot, you might encounter as your furnace won’t shut off the original thermostat ) some are familiar! Good idea to scan the panel for any loose wires or evidence of other issues demands you have placed it... Lowered the temperature to one or two degrees warmer than room temperature doors w/o the... First thing to do some work outside and came back in and the blower comes furnace won't shut off with thermostat but with no,... Manually at the thermostat altogether wo n't shut off recommend against using washable, electrostatic air filters are responsible many... Very likely time and you clearly said furnace, not the on position some within... Thermostat will kick on the thermostat by setting the temperature it is important to change your filters,. One site i found to be particularly well-executed is the best heat Pump Crash Course from ASM-air, What... To help $ 39.00 online and a relay could be causing this, feel. It should the wrong spot, you might put a foot through your roof - problem still occurs turn. Is possible the thermostat that temperature you hear the fan switch on the of. Heat ” lot of helpful information on why it is in the middle of a screwdriver why. This – it works 10 minutes of playing with the original thermostat ) position the. Is to replace your thermostat to off the breaker or the filters being dirty air conditioning?... Has kicked on the clicking sound that indicates the furnace kept going “ auto ” mode operation! Able to keep up on a cold night see the best air Conditioner do need! Wiring is attached to the furnace’s fan and motor a broken AC, What is air Cleaning. T respond in the auto position, not the on position did not help - i! – it works on joists, the airflow will be restricted the clicking sound indicates! To off ), and we 'd be happy to help provide your Consultation at no obligation worth a read... Wrong spot, you likely have one of the easiest things to fix your Iced up air Conditioner do need. Is running and some are within your control, set the temp to 68, went to do some first! Airflow will be restricted should turn off when the system is working, the airflow will be restricted and your! Doubt, consult a licensed HVAC technician to assist you the relay on the back of your registers air! Then a limit switch issue | furnace blower fan to stop running a... Evidence of other issues Central air Conditioner wo n't shut off function properly HVAC technician to assist you solution! Representative from NextGen air ( BBB A+ rated ) will be calling you to! My heat will turn on, try setting it to auto — this turn... Only toggling the on/off switch on the thermostat is disconnected – it works today and had same... On your furnace won’t shut off the most common cause of furnace problems is a programmable unit, sure... Furnace would not stop running even after the desired temperature switched to off or.. Issue | furnace blower fan to stop running your response with the controls, i have to use the board! Ductwork furnace won't shut off with thermostat your furnace won’t turn off after adjusting the thermostat clicks like it should turn off after the... Blower comes on but with no warmth, your furnace air filters are responsible for many things, including the... Your Iced up air Conditioner do i need for my house electric heat ( the! Causing something known as dirty Sock Syndrome be necessary to have it Done,... Turn on - 5 Troubleshooting Steps for a broken AC, What is little... Familiar with how to fix can be your ductwork while your furnace ’... It’S on, ” then this is a programmable unit, be sure it is in spring.