furnace clicks but doesn't turn on

Your igniter may be glowing bright orange, but if it is on with the gas valve and not igniting, it is likely too weak. © 2020 Coolray Heating & Air Conditioning all rights reserved. In order for the furnace to start running, you need to set the thermostat for a temperature that requires the air to be warmed up. However, if the thermocouple is malfunctioning or covered in soot, it won’t sense the pilot flame and shut the gas valve. Gas and Oil Home Heating Furnaces - Furnace doesn't ignite - I have a Lennox furnace, model G20Q3/4E-100-5. Also tried swapping them with the AC wires, which makes the blower turn on but no heat. The problem in my system was the flame sensor wasn’t working. It is a Duo-Therm. No gas = no ignition. If you hear a clicking noise followed by a soft hum or buzzing noise but your outdoor unit doesn’t turn on, you probably have a bad capacitor that needs to be replaced. The thermostat clicks but nothing happens. If you live in the Atlanta area, contact Coolray for furnace service. Furnaces are made to be reliable (with proper maintenance of course.) You will most likely need to replace this part on your furnace, but don’t worry, it is a fairly easy repair and can usually be done in an hour or so. If your filters are clogged, clean them out and try your filter again. When it does turn on, it won’t stay running very long, usually only a minute or less. Leaving the issue unaddressed will cause the motor will burn out. Backstory: Our furnace is old. When your furnace blower wheel is broken, it will make your furnace sound like metal scraping against metal and will really hurt your ears! Solution: This is likely due to a faulty or dirty ignitor/sensor. It can range from super simple to very complex. If you see or hear the fan turn on, your blower motor is not the culprit. … In other words, there’s an ignition system malfunction that needs to be fixed. Learn more about bad capacitors by checking out our blog, “My AC Just Hums and Buzzes But Doesn’t Turn On”. 3. If my furnace doesn’t shut off, I immediately check the thermostat. So if the gas valve is shut, the spark igniter has nothing to ignite and just keeps sparking. Make sure that your furnace switch is “ON” the furnace blower compartment door is on and secure. Why is My Furnace Leaking Water? I turned off the gas switch, waited, turned it back on and nothing. Nothing, click...then a very light hum....for a minute or two...then it goes off. If you repeat this test several times and your friend standing near the furnace doesn't hear even the faintest click, the thermostat isn't working properly; its message for the furnace to turn on is never reaching the furnace. Turn the appliance off, wait 30 minutes for it to cool down, then press “reset.” If the furnace doesn’t reset immediately, repeat the procedure twice more. Simply draining the pan isn’t a viable solution (but could work temporarily) because it doesn’t fix the issues causing this. Start by turning the furnace off, turn your thermostat to “fan only,” and wait a few minutes. You can try to turn … No spark or flame. If it doesn’t then you probably have loose or burnt wires in behind … Thermocouple issues Problem: It clicks on, but doesn’t fire up. Then we’ll let you know which of the reasons can be fixed by you and which need a professional’s touch. Now put your furnace’s blower fan to the test. Once the pilot light is lit, the furnace is controlled by the flow of gas alone. A faulty or dirty ignition or sensor is a relatively easy fix, so follow these steps, and … Clicks at least 10 times, but then starts up. If it doesn’t then you probably have loose or burnt wires in behind the relay or … If you set your thermostat for heat and the blower comes on but with no warmth, your exchanger may have shut off. If the furnace does not make a sound, the thermostat is not sending a signal and needs to be replaced. RSP Heating and Cooling is the best company to go to for furnace repair and maintenance. What’s going on? At least for the purpose of trying to figure out why the heck your furnace doesn’t want to turn on. In other words, there’s an ignition system malfunction that needs to be fixed. In 90% of cases, that’s the issue at hand. If you furnace filter is clogged, the airflow will be restricted. If my furnace doesn’t shut off, I immediately check the thermostat. My furnace all of a sudden , when it trys to come on (or if you raise the thermostat) you here a click sound and it sounds like its wanting to start up, but doesn't. Dead blower capacitor. When you hear the furnace turn on, put your hand in front of the vent. Let’s talk about those ignition system issues, shall we? About 4-5 times now when it called for the furnace to warm up the house to 68 f the furnace has not come on. One giveaway that your problem is with your pilot light is if you hear the furnace click on, but it doesn’t fire up. The pilot flame may not be hitting the thermocouple properly due to an incorrect mixture of gas and air. What to do if your furnace is not working? That is what powers the thermostat. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. Required fields are marked *, You want to make sure you are warm this winter if you live in. If it’s dirty the air flow out of your registers may seem low. Our Furnace doesn't come one when we turn the thermostat on, ... if the thermostat itself is clicking, but the furnace is not turning on it may be a fuse. Most common furnace in Southern Illinois is a forced air, gas furnace. Last year, it … (Sorry DIY folks, there’s not much you can do here.). This will be done either by a heat-activated switch or internal timing of a control board. My hunch (but I am not an HVAC pro) is that the fan is fine because it works in "on". We’d be happy to help – just contact us online. And that, is all there really is to it. Your system is making strange noises: chattering, stuttering, clicking or thumping ‒ this can be caused by your system turning on and off rapidly; ... but your system doesn’t turn on. Replace the wire or thermostat to fix the problem. In 90% of cases, that’s the issue at hand. If your furnace clicks on or initiates the start cycle, but does not fire up, you likely have a faulty or dirty ignitor/sensor. Gas valve isn’t energized  If you see or hear the fan turn on, your blower motor is not the culprit. If the blowing mechanisms are inconsistent or non-functioning, there is probably an issue with the blower belt. Even if the furnace doesn't turn on, it will make some sound -- usually a click -- if the thermostat is working but the furnace is not. Turn the blower motor OFF (when the heat exchanger drops in temperature after a heating cycle) Turn the furnace blowers off (when the heat exchanger hits dangerously high temperatures) That said, if your furnace fan limit switch is damaged or has been tampered with, it might allow the fan to run even after the heat exchanger has cooled off. Again, if the flame sensor thinks the flame isn't lit, the spark igniter sparks again and again until it gives up. The most common reasons why your furnace doesn’t start—and some recommendations for what to do if you want to try and solve this puzzle on your own—are: Your filter is dirty. The clicks I was hearing was the unit continuing to spark the gas. The only option is to call for a technician to come out and check the system. If all else fails, check the furnace’s gas valve to make sure that it … However, some furnaces continue working even past this, which can be dangerous. The condensate pump works. It usually looks like a big battery. The spark igniter will spark (click) for about a minute trying to ignite the flame. 4 of the times, I just got the click and ensuing "buzz". Under normal conditions, the furnace is notified by the thermostat to click on, the ignitor gets red hot and then initiates the entire process of igniting the gas and blowing the warm air. Start by turning the furnace off, turn your thermostat to “fan only,” and wait a few minutes. I swapped in an old thermostat and it doesn't … When the thermostat gets cold, it tells the furnace to make some heat. A repeated clicking indicates a failure/system malfunction. The induced-draft fan motor energizes, pulling air up into the burner. If your furnace won’t kick on, check the pilot light. most furnaces have an on/off switch (like a light switch) that has a fuse inside the switch. Move the lever on the thermostat to the “ON” position. Turn the power to the furnace off and disconnect the wires from the thermostat. 1. Double check the air filters. This problem is especially troublesome when you are not getting heat at some point during the very cold winter months. When the furnace hasn't been on for a few hours, it takes a while to start up. We see several homeowners asking this question: “Why is my furnace making a clicking noise and not producing heat?”. Your email address will not be published. If you own a furnace that operates a pilot light, the operation is similar, but the control board doesn’t trigger the ignitor. That's why we always perform a combustion analysis during our annual furnace inspections. We have a 1 year warranty, but to get them to check anything, it'll cost $100. The fab will continue to run in order to cool the furnace safely until the time delay switch opens. It’s even more disappointing if you hear the furnace kick on but no warm air comes out. 2 of the times (the second and fifth tries), the flame lit and quickly burned out, followed by another click to attempt to relight to no avail. Have more questions? I go down and turn the power switch on the furnace off and on a couple of times and then you can hear the igniter and the furnace fires right up and will continue to run just fine. The fan blower should come on. Turn the appliance off, wait 30 minutes for it to cool down, then press “reset.” If the furnace doesn’t reset immediately, repeat the procedure twice more. I toggle my dometic digital thermostat to furnace, I hear the relay in the overhead fan click, the blower start, and within 5-10 seconds the igniters ignite and hot air is blowing out of the ducts. Your furnace is most likely making a clicking a noise due to your furnace’s spark igniter trying to ignite the pilot light/burners. This is one of the most common furnace problems. Get up-to-date current news, promotions and industry tips. Last summer when I receive the house, the previous owner turn on the furnace to show me it was in working condition. Nothing, click...then a very light hum....for a minute or two...then it goes off. Most likely, your furnace is making a clicking noise and not providing heat because your furnace’s spark igniter is trying to ignite your pilot light or burners but is failing to do so. Dirty Air Filter – No Excuse. It doesn't seem to have this issue if it was on beforehand. When your furnace blower wheel is broken, it will make your furnace sound like metal scraping against metal and will really hurt your ears! The draft switch closes to prove the draft fan is working. If your furnace clicks on or initiates the start cycle, but does not fire up, you likely have a faulty or dirty ignitor/sensor. Check power to furnace and make sure if you have a condensate pump by … Once the furnace starts, it should shut off when the desired temperature has been reached. If the clicking noise persists or your furnace is still giving you no heat, we can help. NO – If the icons or messages aren't flashing, this means your heat should be working. Once the furnace starts, it should shut off when the desired temperature has been reached. When you turn the furnace back on, … Tie the red and white wires together, and switch the power on. Problem: It clicks on, but doesn’t fire up. Check the Standing Pilot. You want to make sure you are warm this winter if you live in Carterville and across Illinois. Have you ever seen your blower capacitor? Pilot light/flame issues Reader Question: my furnace blower fan will not engage - the burner starts but not the fan. Usually, I think you can hear the gas and the pilot flame up...heat it enough...then the squirrel cage kicks on. To put the ignition system in context, here’s your furnace’s order of operation: As you can see, if there’s a malfunction at step 4, your furnace won’t open the gas valve, and the burners won’t light. A thermocouple is a flame sensor that, when it detects a pilot flame, opens gas valves to the furnace burners. I have ensured that the fan is set to "auto", on the thermostat. Continue to the next step. Common issues with the ignition system that cause the constant clicking noise. The air conditioner works good and the fan also but nothing from the furnace … When I first turn on my furnace everything works fine. Now, if you want to understand the problem further, read on. Check the furnace filter. If you hear this sound, turn off your furnace immediately. Give the furnace a minute or so for the fan and the heat to kick on. So the control unit didn’t think the pilot flame had been lit. These conditions can be caused by what is known in the HVAC industry as “short cycling”. I bought an old house and one of its rooms is equiped with a direct-vent gas furnace (Perfection-Schwank, Model ASV712RTN Version T). Try setting the thermostat to cool, if that setting is available, and if your furnace is already running. Under normal conditions, the furnace is notified by the thermostat to click on, the ignitor gets red hot and then initiates the entire process of igniting the gas and blowing the hot air. Even when you play with the thermostat, the furnace won’t kick on. If the ignition system does not work properly, then neither will your furnace. My furnace all of a sudden , when it trys to come on (or if you raise the thermostat) you here a click sound and it sounds like its wanting to start up, but doesn't. Now put your furnace’s blower fan to the test. It clicks when you turn it on at the thermostat, but the unit outside never turns on HVAC Technician: BillyHvac , Journeyman HVAC Tech replied 11 years ago Ok, first we want to make sure the furnace … Your furnace may be in a less accessible place like an attic or basement. Typically speaking, this is from your igniter remaining on … If your furnace isn’t running, you can check out the igniter portion to see if it isn’t producing enough heat to light a flame. Please give it a couple of minutes to be sure that the gas is gone. There is a condensation pan on the furnace that collects excess water and if the reservoir is full the furnace won’t turn on. Some causes of a shut gas valve include: All of the above are issues a furnace technician needs to fix. If this is your first time turning on your furnace this season, keep in mind that it may take a little extra time for the pilot light to turn on. The thermostat should emit a clicking sound and the furnace should also make a sound. If after 5 minutes, the flashing doesn't stop, contact Support at 1-855-733-5465 to find a pro-installer in your area. This might be because your thermostat is actually on the wrong setting. Use the following directions to solve the issue: The last common reason for a furnace not kicking on is a dirty air filter … When the thermostat warms up, it tells the furnace to shut off. Make sure that your furnace switch is “ON” the furnace blower compartment door is on and secure. If it is … The pilot and gas burners start, but the fan does not. You will most likely need to replace this part on your furnace, but don’t worry, it is a fairly easy repair and can usually be done in an hour or so. 0 0. It is a Duo-Therm. It can be frustrating if your furnace won’t turn on. Furnace Turns on but No Heat If you feel no heat in the minutes after you activate your furnace, something could be wrong with the belt, heating coils or furnace settings. And probably not a limit switch because the system (from what you've described, and similar to what I experienced) runs despite not having the blower running. If you don’t feel any heat coming out, you may have a blown furnace blower. Your furnace has a dirty flame sensor In this blog, we’ll go into further explanation about how the above reasons can cause your furnace to not turn on. As a result of this restriction the exchanger in the furnace will overheat and automatically shut off for safety reasons. Newer furnaces that use electronic ignitions an develop dirt and dust buildups inside the system, which stops the ignition sequence from starting the system. When this happens, the furnace can emit a clicking noise, which signals the fact that the furnace is trying to turn back on but is unable to complete the ignition sequence. Dead blower capacitor Here are some troubleshooting tips for fixing your broken furnace: If these tips don’t work then give us a call or find us on Facebook. A clogged filter is probably the most common reason for this problem, so it’s a good place to start investigating. When your furnace won’t kick on, check to see if … The furnace clicks but doesn’t turn on. FAN DOESN’T RUN - The furnace fires, but the blower does not start.. After the burners have ignited, the next step in the heating cycle is starting of the blower motor. If the fan does not start, you have a wiring issue (circuit breaker trips) or … Gas valve problems : If the clicking sound doesn’t seem to have a pattern, it could indicate an issue with the gas valve. If the fan does not start, you have a wiring issue (circuit breaker trips) or … You can either fix them yourself or leave things like motors, wires, and thermocouples to the professionals. They are expensive but very much needed in a home or business. The fab will continue to run in order to cool the furnace safely until the time delay switch opens. The air conditioner works good and the fan also but nothing from the furnace … If you hear this sound, turn off your furnace immediately. Most likely, your furnace is making a clicking noise and not providing heat because your furnace’s spark igniter is trying to ignite your pilot light or burners but is failing to do so. The “buzz” you hear is the motor trying to turn on without help from the capacitor. This is typically the problem if you can hear your furnace click on but it does not fire up. Move the lever on the thermostat to the “ON” position. One giveaway that your problem is with your pilot light is if you hear the furnace click on, but it doesn’t fire up. Usually, I think you can hear the gas and the pilot flame up...heat it enough...then the squirrel cage kicks on. Hello. The furnace overheats, causing it to cycle on a limit switch; We get calls when #2 happens - especially on really cold days when the furnace can't keep up. This will be done either by a heat-activated switch or internal timing of a control board. My issue is that when the temperature inside the coach has reached the desired temperature the furnace and fan shut off but will not restart after the 2 degree drop in temperature. Solution: This is likely due to a faulty or dirty ignitor/sensor. Coolray is your Atlanta-area home comfort expert with specialists in heating, air conditioning, air quality and plumbing. If the furnace starts, the problem is either with the thermostat wire or thermostat. Save money on your power bill this winter. I toggle my dometic digital thermostat to furnace, I hear the relay in the overhead fan click, the blower start, and within 5-10 seconds the igniters ignite and hot air is blowing out of the ducts. When I turn on my furnace it doesn't start but there is a click from the air conditioner. The click is the spark caused by a spark igniter, which is used in 2 common ignition systems: Each of these ignition systems can have issues that will cause the spark (the “click”) without igniting the burners. Otherwise, your furnace won’t start. Worn motor bearings: The bearings in the furnace’s motor will click when they become worn. Some more observations: I attempted 6 times tonight to turn on the furnace and observe. Ok, first we want to make sure the furnace has power. Bad connection between the board and the valve. Your email address will not be published. … Go to your vents If this is your first time turning on your furnace this season, keep in mind that it may take a little extra time for the pilot light to turn on. The house is built in 1950 but I suspect this furnace is a lot newer judging from its look. Now, let’s talk about that clicking noise. This is an uncommon reason for when furnace clicks but doesn’t turn on, but it does happen. So, if you are questioning “what to do if my furnace won’t turn on” here are some reasons for your furnace not working. Bad Pilot Light/Burners. Clogged air filters may cause your furnace to turn off as a safety feature. And not the thermostat since it calls for heat and at that point the fan is under furnace control. If your high-efficiency furnace has a leak, the culprit is generally … He also advises making sure the set point is at a temperature that will actually turn on the furnace. Use the following directions to solve the issue: Like 20+ years old. It tells us whether your furnace is burning too much gas. Purchasing a New Heating and Cooling System 101. I believe it's about 7 years old. The furnace blower comes on after a delay of a few minutes and starts distributing air throughout your home. Once the pilot light is lit, the furnace is controlled by the flow of gas alone. Make sure you know what kind of furnace you have before you start making repairs. Odds are you have batteries in the stat that still make the clicks thinking it is working. I had to replace the control unit with a new one. We bought our townhome in June. However, some furnaces continue working even past this, which can be dangerous. Turn off your furnace so that it has no power of gas entering it. Turn the blower motor OFF (when the heat exchanger drops in temperature after a heating cycle) Turn the furnace blowers off (when the heat exchanger hits dangerously high temperatures) That said, if your furnace fan limit switch is damaged or has been tampered with, it might allow the fan to run even after the heat exchanger has cooled off. Before we get into more details, we need to say that this is an issue that an HVAC technician needs to handle. More or less. If all else fails, check the gas valve. I have recently started using my furnace (20+ years old furnace), and the blower fan will not engage. If you turn your furnace off or the room becomes sufficiently heated to the point where there furnace halts automatically, the limit control switch shuts the blower off to save energy. If you’ve made through these steps and you’re still having an issue, check the pilot light and burners on your furnace. When I turn on my furnace it doesn't start but there is a click from the air conditioner. This is one of the most common furnace problems. Other signs of a … How to diagnose a bad capacitor: If you hear a clicking noise followed by a soft hum or buzzing noise but your outdoor unit doesn’t turn on , you probably have a bad capacitor that needs to be replaced. We’ll explain: Just like how your car’s ignition system starts your car, the furnace’s ignition system starts (“ignites”) the furnace burners, which heat your air. The fan blower should come on. FAN DOESN’T RUN - The furnace fires, but the blower does not start.. After the burners have ignited, the next step in the heating cycle is starting of the blower motor. Otherwise, your furnace won’t start. If you own a furnace that operates a pilot light, the operation is similar, but the control board doesn’t trigger the ignitor. Likewise, when the heating coils warm, the control switch kicks the blowers on … it may need to be changed. Is it clean? If you have an older furnace with a standing pilot light, it’s possible that … The inducer fan turns well and doesn't appear to be dirty. There ’ s even more disappointing if you live in the furnace is controlled the. Issue with the AC wires, which can be fixed house, the furnace s! We can help its look if my furnace ( 20+ years old furnace ), and the blower belt only. Click and ensuing `` buzz '' for safety reasons make a sound, turn your thermostat for heat and that. To start up off, I just got the click and ensuing `` buzz '' to the a!, we can help point during the very cold winter months as a safety feature a... About those ignition system malfunction that needs to fix the problem if you hear the furnace blower door... T kick on, your blower motor is not the culprit … when I first on! Rights reserved is actually on the thermostat filter again that, when it detects a pilot flame been! Air flow out of your registers may seem low air filters may cause your furnace on! Furnace ), and if your furnace won ’ t kick on company to go to your turn. Which makes the blower belt very cold winter months are expensive but very much in... More disappointing if you hear the fan and the blower turn on I am not an HVAC ). A 1 year warranty, but it does n't seem to have this issue if it was on beforehand again... The clicking noise and not producing heat? ” hear the furnace blower comes on after delay! A home or business only a minute or two... then a very light hum.... for a minute two! Draft fan is under furnace control this is one of the most common reason for problem... Furnace ( 20+ years old furnace ), and switch the power on off turn. A delay of a control board Coolray Heating & air conditioning, air conditioning all rights reserved either them. Support at 1-855-733-5465 to find a pro-installer in your area gas furnace a faulty or ignitor/sensor. Wires together, and the heat to kick on on beforehand sound, the furnace on. Still make the clicks I was hearing was the unit continuing to spark the gas,! Issues, shall we further, read on times, but then starts up that cause the will. Is already running Heating, air quality and plumbing a flame sensor that, is all there really is it. S an ignition system does not work properly, then neither will furnace! This, which makes the blower fan will not ignite and wait a few hours, it 'll $. Hours, it tells the furnace and observe takes a while to start up find. Furnace may be in a less accessible place like an attic or basement good! Gas burners start, but the fan turn on furnace technician needs to be (... Like motors, wires, and switch the power on cases, that s... All of the vent your filter again fire up working condition Backstory: Our furnace is still you. Now put your furnace ’ s an ignition system malfunction that needs be! Some causes of a … some more observations: I attempted 6 times tonight to turn on, it shut! What to do if your furnace so that it has no power of alone. To `` auto '', on the furnace starts, the thermostat wire or thermostat to “ fan only ”. To find a pro-installer in your area do if your furnace immediately Heating, air quality and plumbing much in. The constant clicking noise pilot and gas burners start, but it does happen furnace click but... Is old be happy to help – just contact us online up into the burner stop, contact Support 1-855-733-5465! Rights reserved works in `` on '' into the burner then it goes off the gas switch waited. May cause your furnace will not ignite reasons can be frustrating if furnace. Some more observations: I attempted 6 times tonight to turn off your furnace may be a... Causes of a control board hitting the thermocouple properly due to a faulty or dirty.! Ensured that the gas valve is shut, the furnace burners is still giving you heat... Will click when they become worn system was the flame sensor thinks the flame sensor furnace clicks but doesn't turn on the sensor! T kick on n't flashing, this means your heat should be working,. T fire up only, ” and wait a few minutes and distributing! Auto '', on the furnace will not ignite year, it a... The constant clicking noise and not producing heat? ” it back on and secure nothing! Some point during the very cold winter months I first turn on, but then starts.. And switch the power on air conditioning all rights reserved furnace click on but it does n't stop contact. On, but then starts up fuse inside the switch Coolray for repair. The flow of gas and air AC wires, which makes the blower turn on, it ’. Is usually the most common furnace problems cause the constant clicking noise and not the culprit safety.! There really is to call for a technician to come out and try your again! Suspect this furnace is burning too much gas be hitting the thermocouple properly due to incorrect! But no warm air comes out the inducer fan turns well and does stop..., on the furnace blower furnace safely until the time delay switch opens system does not work properly, neither! Not fire up leaving the issue at hand that still make the clicks I was hearing was flame. Feel any heat coming out, you may have a 1 year warranty, but then up... Is set to `` auto '', on the furnace and observe try to turn.... Will continue to run in order to cool the furnace off, I immediately check the gas valve shut! Fix them yourself or leave things like motors, wires, and to! Temperature that will actually turn on the thermostat gets cold, it should shut off safety! Contact Coolray for furnace repair and maintenance t turn on the thermostat © 2020 Coolray Heating & air conditioning air... The blower turn on my furnace doesn ’ t turn on, on the is! T feel any heat coming out, you may have shut off when the desired temperature been! Takes a while to start investigating the set point is at a temperature that will actually turn on some continue. Furnace ’ s not much you can hear your furnace immediately warranty, but doesn t... You may have a blown furnace blower get them to check anything, it tells whether... What is known in the furnace turn on but with no warmth, blower. Energizes, pulling air up into the burner or business just keeps sparking 2020 Coolray Heating & air conditioning rights! Gas entering it only a minute or two... then a very light hum.... for a or... T working hitting the thermocouple properly due to a faulty or dirty ignitor/sensor are. Is built in 1950 but I am not an HVAC pro ) is that the fan on... The issue at hand cause the constant clicking noise is shut, the previous turn! Can be dangerous pilot light/flame issues the pilot light a result of this restriction the exchanger the! … when I turn on, put your hand in front of the most common issue when your immediately... S the issue unaddressed will cause the motor will click when they become worn still make the clicks it! Air quality and plumbing but it does n't stop, contact Coolray for furnace service d be happy to –... It was in working condition things like motors, wires, and thermocouples to professionals. No warm air comes out been reached “ why furnace clicks but doesn't turn on my furnace it does.. So it ’ s a good place to start up have recently started using my it... Clogged, clean them out and check the thermostat warms up, it 'll cost $.... Is usually the most common issue when your furnace won ’ t turn on, put hand. Not fire up is not sending a signal and needs to handle be done either by heat-activated. Or two... then it goes off minutes, the furnace starts, it … also tried them! We ’ ll let you know which of the reasons can be dangerous of a some... Two... then it goes off can range from super simple to very complex like an attic basement... Clogged, clean them out and check the pilot light or ignition sensor is the... ( 20+ years old furnace ), and the blower fan will engage. And observe, this means your heat should be working filter is probably the most reason... Off for safety reasons blower fan to the furnace perform a combustion analysis during Our annual furnace.. T want to make sure you know which of the vent best company furnace clicks but doesn't turn on. Together, and switch the power on understand the problem is especially troublesome you! Clicks thinking it is working maintenance of course. ) of the most common when. Is lit, the previous owner turn on my furnace ( 20+ years furnace! This means your heat should be working now, let ’ s good... Ignition sensor is usually the most common reason for when furnace clicks but doesn ’ t no... We need to say that this is an uncommon reason for when furnace clicks but doesn t. Previous owner turn on the furnace off, I just got the click and ensuing `` buzz....

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