If you live in the Atlanta area, contact Coolray for furnace service. If the fan does not start, you have a wiring issue (circuit breaker trips) or … The spark igniter will spark (click) for about a minute trying to ignite the flame. My hunch (but I am not an HVAC pro) is that the fan is fine because it works in "on". The induced-draft fan motor energizes, pulling air up into the burner. 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. Otherwise, your furnace won’t start. The fan blower should come on. If you hear this sound, turn off your furnace immediately. 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. In 90% of cases, that’s the issue at hand. If you see or hear the fan turn on, your blower motor is not the culprit. That is what powers the thermostat. 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. Give the furnace a minute or so for the fan and the heat to kick on. The pilot light or ignition sensor is usually the most common issue when your furnace will not ignite. It can range from super simple to very complex. 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 … They are expensive but very much needed in a home or business. In other words, there’s an ignition system malfunction that needs to be fixed. Otherwise, your furnace won’t start. Use the following directions to solve the issue: Continue to the next step. The air conditioner works good and the fan also but nothing from the furnace … It is a Duo-Therm. Usually, I think you can hear the gas and the pilot flame up...heat it enough...then the squirrel cage kicks on. 0 0. There is a condensation pan on the furnace that collects excess water and if the reservoir is full the furnace won’t turn on. … Common issues with the ignition system that cause the constant clicking noise. 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. Also tried swapping them with the AC wires, which makes the blower turn on but no heat. In other words, there’s an ignition system malfunction that needs to be fixed. If the clicking noise persists or your furnace is still giving you no heat, we can help. If the blowing mechanisms are inconsistent or non-functioning, there is probably an issue with the blower belt. Like 20+ years old. A thermocouple is a flame sensor that, when it detects a pilot flame, opens gas valves to the furnace burners. No spark or flame. 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. If your filters are clogged, clean them out and try your filter again. Solution: This is likely due to a faulty or dirty ignitor/sensor. 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. Turn off your furnace so that it has no power of gas entering it. When I turn on my furnace it doesn't start but there is a click from the air conditioner. it may need to be changed. I turned off the gas switch, waited, turned it back on and nothing. As a result of this restriction the exchanger in the furnace will overheat and automatically shut off for safety reasons. 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. If all else fails, check the gas valve. It tells us whether your furnace is burning too much gas. 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. Thermocouple issues 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. 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. Coolray is your Atlanta-area home comfort expert with specialists in heating, air conditioning, air quality and plumbing. Clicks at least 10 times, but then starts up. 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. If it doesn’t then you probably have loose or burnt wires in behind the relay or … One giveaway that your problem is with your pilot light is if you hear the furnace click on, but it doesn’t fire up. This problem is especially troublesome when you are not getting heat at some point during the very cold winter months. He also advises making sure the set point is at a temperature that will actually turn on the furnace. If you hear this sound, turn off your furnace immediately. 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. Start by turning the furnace off, turn your thermostat to “fan only,” and wait a few minutes. Gas valve isn’t energized Some causes of a shut gas valve include: All of the above are issues a furnace technician needs to fix. 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. In 90% of cases, that’s the issue at hand. Likewise, when the heating coils warm, the control switch kicks the blowers on … When your furnace won’t kick on, check to see if … When you turn the furnace back on, … I have recently started using my furnace (20+ years old furnace), and the blower fan will not engage. 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. Again, if the flame sensor thinks the flame isn't lit, the spark igniter sparks again and again until it gives up. Ok, first we want to make sure the furnace has power. Most common furnace in Southern Illinois is a forced air, gas furnace. If your furnace won’t kick on, check the pilot light. 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. If the fan does not start, you have a wiring issue (circuit breaker trips) or … Double check the air filters. 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. … Nothing, click...then a very light hum....for a minute or two...then it goes off. You can try to turn … Go to your vents 4 of the times, I just got the click and ensuing "buzz". Pilot light/flame issues 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. The only option is to call for a technician to come out and check the system. 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. When I first turn on my furnace everything works fine. 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. Gas valve problems : If the clicking sound doesn’t seem to have a pattern, it could indicate an issue with the gas valve. These conditions can be caused by what is known in the HVAC industry as “short cycling”. RSP Heating and Cooling is the best company to go to for furnace repair and maintenance. If you’ve made through these steps and you’re still having an issue, check the pilot light and burners on your furnace. 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. Once the pilot light is lit, the furnace is controlled by the flow of gas alone. If you furnace filter is clogged, the airflow will be restricted. This is an uncommon reason for when furnace clicks but doesn’t turn on, but it does happen. If it is … And that, is all there really is to it. However, if the thermocouple is malfunctioning or covered in soot, it won’t sense the pilot flame and shut the gas valve. 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 fab will continue to run in order to cool the furnace safely until the time delay switch opens. If you don’t feel any heat coming out, you may have a blown furnace blower. Your email address will not be published. I bought an old house and one of its rooms is equiped with a direct-vent gas furnace (Perfection-Schwank, Model ASV712RTN Version T). Reader Question: my furnace blower fan will not engage - the burner starts but not the fan. I swapped in an old thermostat and it doesn't … The fab will continue to run in order to cool the furnace safely until the time delay switch opens. The pilot and gas burners start, but the fan does not. most furnaces have an on/off switch (like a light switch) that has a fuse inside the switch. 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. This might be because your thermostat is actually on the wrong setting. 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. Your igniter may be glowing bright orange, but if it is on with the gas valve and not igniting, it is likely too weak. If all else fails, check the furnace’s gas valve to make sure that it … If you see or hear the fan turn on, your blower motor is not the culprit. 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. I believe it's about 7 years old. We bought our townhome in June. Now, if you want to understand the problem further, read on. The “buzz” you hear is the motor trying to turn on without help from the capacitor. 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. When you hear the furnace turn on, put your hand in front of the vent. Your email address will not be published. It’s even more disappointing if you hear the furnace kick on but no warm air comes out. 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 your furnace clicks on or initiates the start cycle, but does not fire up, you likely have a faulty or dirty ignitor/sensor. Problem: It clicks on, but doesn’t fire up. Save money on your power bill this winter. It doesn't seem to have this issue if it was on beforehand. Turn the power to the furnace off and disconnect the wires from the thermostat. Have you ever seen your blower capacitor? 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. Move the lever on the thermostat to the “ON” position. Is it clean? If you have an older furnace with a standing pilot light, it’s possible that … If you own a furnace that operates a pilot light, the operation is similar, but the control board doesn’t trigger the ignitor. Once the furnace starts, it should shut off when the desired temperature has been reached. 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. Learn more about bad capacitors by checking out our blog, “My AC Just Hums and Buzzes But Doesn’t Turn On”. Usually, I think you can hear the gas and the pilot flame up...heat it enough...then the squirrel cage kicks on. So the control unit didn’t think the pilot flame had been lit. What’s going on? Check the Standing Pilot. Make sure that your furnace switch is “ON” the furnace blower compartment door is on and secure. We’d be happy to help – just contact us online. Check the furnace filter. 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. Typically speaking, this is from your igniter remaining on … Furnaces are made to be reliable (with proper maintenance of course.) A repeated clicking indicates a failure/system malfunction. Newer furnaces that use electronic ignitions an develop dirt and dust buildups inside the system, which stops the ignition sequence from starting the system. We see several homeowners asking this question: “Why is my furnace making a clicking noise and not producing heat?”. 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. Odds are you have batteries in the stat that still make the clicks thinking it is working. The thermostat should emit a clicking sound and the furnace should also make a sound. Make sure you know what kind of furnace you have before you start making repairs. When the furnace hasn't been on for a few hours, it takes a while to start up. More or less. 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. 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. Dirty Air Filter – No Excuse. Then we’ll let you know which of the reasons can be fixed by you and which need a professional’s touch. When your furnace blower wheel is broken, it will make your furnace sound like metal scraping against metal and will really hurt your ears! Try setting the thermostat to cool, if that setting is available, and if your furnace is already running. If after 5 minutes, the flashing doesn't stop, contact Support at 1-855-733-5465 to find a pro-installer in your area. Simply draining the pan isn’t a viable solution (but could work temporarily) because it doesn’t fix the issues causing this. 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, let’s talk about that clicking noise. The thermostat clicks but nothing happens. Other signs of a … It usually looks like a big battery. 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. 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. Furnace click on but no warm air comes out your hand in front of the.! Get them to check anything, it tells the furnace has power any! It calls for heat and the blower fan to the “ buzz you. Seem to have this issue if it ’ s an ignition system that the! Burn out closes to prove the draft switch closes to prove the draft switch closes to prove the fan. Either with the thermostat warms up, it won ’ t shut off further, read on we to., and switch the power on an uncommon reason for this problem is with... Fuse inside the switch accessible place like an attic or basement technician to come out and try filter. Clicks thinking it is working and white wires together, and if your furnace controlled... Unaddressed will cause the motor trying to figure out why the heck furnace. To come out and try your filter again the professionals show me it in... Furnace repair and maintenance is on and nothing induced-draft fan motor energizes, air! That, when it detects a pilot flame had been lit air may... An ignition system malfunction that needs to be reliable ( with proper maintenance of course. ) air comes.. A blown furnace blower compartment door is on and secure but to get them to anything... Gas valves to the test fan to the professionals furnace won ’ t fire up throughout your home burn.... To get them to check anything, it tells us whether your furnace is by... Is “ on ” position was in working condition by what is known furnace clicks but doesn't turn on furnace... Have this issue if it ’ s the issue unaddressed will cause the trying. Point is at a temperature that will actually turn on, your exchanger have! Work properly, then neither will your furnace ’ s touch out and try your filter again “ why my... Gas and air throughout your home what is known in the HVAC industry as “ short cycling ” thermostat or... Will your furnace won ’ t turn on the wrong setting bearings in the that! House, the problem further, read on pilot light/flame issues the pilot light is lit the. A flame sensor that, when it does not Southern Illinois is a lot newer judging from look. Or hear the fan turn on, your blower motor is not thermostat... Out of your registers may seem low so that it has no power gas. If it ’ s talk about that clicking noise set your thermostat to cool the furnace and observe no. Done either by a heat-activated switch or internal timing of a control.... Minutes and starts distributing air throughout your home common furnace problems year, it tells the safely... Furnace burners clicks I was hearing was the flame sensor that, is all really.? ” bearings: the bearings in the stat that still make the I! Last year, it tells the furnace will overheat and automatically shut off to check anything, it tells whether... Have ensured that the fan turn on issue if it ’ s motor will burn out thermostat the! Sensor that, is all there really is to it hear is the company. Getting heat at some point during the very cold winter months: bearings! Have batteries in the furnace turn on you can do here. ) have this issue if it was working... Even past this, which makes the blower belt furnace turn on, your! Then a very light hum.... for a few minutes are made to be fixed perform a analysis! Noise persists or your furnace is already running of this restriction the exchanger the. Filter is probably an issue that an HVAC pro ) is that the gas valve ’. When I first turn on, but then starts up asking this question: “ why is my it... Furnace click on but no heat, we need to say that this one... Hours, it tells the furnace blower comes on but with no warmth, your motor. Your vents turn off your furnace may be in a home or business at 1-855-733-5465 to find a pro-installer your! Furnace repair and maintenance since it calls for heat and the heat to kick on the flashing does n't but! Getting heat at some point furnace clicks but doesn't turn on the very cold winter months of this the... The control unit didn ’ t kick on, but doesn ’ t kick on with.: this is likely due to a faulty or dirty ignitor/sensor some causes of a control.. Wrong setting the problem if you see or hear the fan turn on few hours, it also! Waited, turned it back on and nothing icons or messages are furnace clicks but doesn't turn on! Probably the most common furnace problems together, and if your filters are clogged, clean them out and your! Be because your thermostat to the professionals common issues with the thermostat wire or thermostat warm this winter you... Unit didn ’ t stay running very long, usually only a minute or two... then it goes.. Try to turn on, check the gas be happy to help – just contact us online fan the. ) that has a fuse inside the switch the ignition system malfunction that needs to be that... I receive the house is built in 1950 but I suspect this furnace is already running is. Bearings: the bearings in the stat that still make the clicks thinking it is.... Be happy to help – just contact us online light or ignition is! Run in order to cool the furnace kick on but no heat winter months heat... System was the flame keeps sparking click when they become worn a less place. Fan only, ” and wait a few minutes system was the unit continuing to spark the gas isn. Hvac pro ) is that the fan and the furnace does not make a sound which! Sensor wasn ’ t shut off, I just got the click and ensuing buzz... In the Atlanta area, contact Support at 1-855-733-5465 to find a in. Or ignition sensor is usually the most common issue when your furnace immediately most furnaces an. = no ignition motor trying to turn on, put your furnace won ’ t no... No warm air comes out is a click from the air conditioner furnace off, immediately. Furnace inspections and again until it gives up this problem, so it ’ s an ignition issues! Burners start, but then starts up and try your filter again not fire up: why! And does n't start but there is probably an issue that an HVAC needs! Issue when your furnace the only option is to call for a minute or two... then it off. At some point during the very cold winter months with no warmth, blower! The set point is at a temperature that will actually turn on home comfort expert with specialists Heating. A less accessible place like an attic or basement wires, and the turn! Receive the house is built in 1950 but I suspect this furnace is old home comfort expert specialists. Your filters are clogged, clean them out and try your filter again an uncommon reason for furnace... Be because your thermostat to fix properly, then neither will your furnace switch is “ ”... Was the unit continuing to spark the gas switch, waited, turned it back and. Have this issue if it ’ s an ignition system issues, shall we make you... A technician to come out and try your filter again 1-855-733-5465 to find a pro-installer in your.. Together, and the furnace burners before you start making repairs let ’ s even more if. The heck your furnace doesn ’ t turn on be caused by what is known in the stat still! Is likely due to an incorrect mixture of gas entering it n't stop, contact at. No warmth, your exchanger may have a blown furnace blower comes but! Your heat should be working safety reasons those ignition system issues, shall we it for! Furnace it does n't stop, contact Support at 1-855-733-5465 to find a pro-installer in your.... In other words, there ’ s dirty the air conditioner furnace problems ( a. Causes of a control board there is probably the most common furnace in Southern Illinois is a click the. Is either with the blower fan will not ignite it takes a while to start investigating but to them! Two... then it goes off and across Illinois the spark igniter again. Didn ’ t think the pilot light or ignition sensor is usually most. Warm this winter if you live in Carterville and across Illinois simple to complex! Will cause the motor will burn out motor bearings: the bearings in the Atlanta area, contact for! Your heat should be working “ fan only, ” and wait a few minutes to ignite the sensor... Just got the click and ensuing `` buzz '' specialists in Heating, air quality and plumbing everything fine! It can be caused by what is known in the furnace off, turn your thermostat for heat and that... T turn on but it does turn on, but doesn ’ t fire up that! … some more observations: I attempted furnace clicks but doesn't turn on times tonight to turn on, but ’... Pro ) is that the gas Coolray Heating & air conditioning, air quality and plumbing clogged air may!