ALLENTOWN heating & air conditioning/hvac. There are many reasons why your furnace might not be kicking on. This is a commonly forgotten step in the winter. Heat Pumps and Heat Pump Balance Point. You might need an entire overhaul of the system or just a few minor tweaks. A furnace not kicking on is one of the most alarming things of the winter. It’s best to be safe rather than sorry so call Comfort Pro to get a clean bill of furnace health. On your thermostat or control unit, turn the heat up so that the furnace will kick on when you restart it. So, if your furnace isn’t kicking on when you want it to, the problem could be one of the common thermostat issues below: The thermostat is set to COOL. Someone could have accidentally switched the setting from HEAT. In other words, if it is 70 °F (21 °C), set your thermostat to at least 75 °F (24 °C). One of those settings is the control for the fan, the default setting is for the ecobee to control the fan for energy efficiency. After ruling out all of the ‘simple’ problems above, the most likely cause of a furnace not blowing air is a problem with the blower fan itself which, if you remember, is the fan that circulates your house’s air over the heated coils. Lack of maintenance. I had the cover off to get the model number off the furnace and it kicked on while I was looking inside. RV Furnace Fan Runs But No Heat. The pilot and gas burners start, but the fan does not. The first thing you want to do if your furnace won’t kick on is to check and see if the thermostat is set to heat and not the air conditioning function. YES – Continue to the next step. If the light is not lit up or it is red, there is a problem which you should contact a professional to have repaired. Electric furnaces pull air through a filter before it heats it. If not in the on position, pop the breakers back into place carefully. One of the most common reports homeowners have when their furnace will not ignite is the clicking sound of the furnace about to come on, but then silence and no heat. This is my first winter in this house and it is an old house but the furnace is about 8 years old. Top Five Reasons Your Furnace May Not Be Igniting 1. The last bit of troubleshooting to perform on your own is to make sure the gas valve is turned fully on so the furnace has a sufficient supply to fire up the system. I have ensured that the fan is set to "auto", on the thermostat. Tips for Fixing a Constantly Running AC Unit. Check the air filter every one to three months and change it if it’s dirty. Motor circuit breaker stays in not kicking out , cad eye new, cad relay new , … If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not. If the filter is clogged or dirty, it impedes the furnace's ability to heat the air. Whenever I change the temp on the thermostat (so far just on turning it up), my furnace will not kick on. While there are several reasons your heat pump or furnace might not be working, these are the most common ones: 1. We have a Consolidated Industries All Purpose furnace, The upflow. Why is My Air Conditioner Blowing Warm Air? Furnaces in Florida are a redundant concept for much of the year. But with a +3 degree temperature offset in effect, the actual room temperature must fall to three degrees below 74, before the furnace kicks on. Red blinking light Brand new. Most furnaces also have a reset button that clears any issues that might cause the furnace to produce no heat. If the thermostat says “fan” then make sure you change it to heating. Will not kick on heat. 6 years college. It’s not a fun situation to turn on your furnace during a cold day or night only to have nothing happen. If it stays lit, your furnace will kick on. The burners do not kick on, the ignitor stops glowing and everything shuts off. After ruling out all of the ‘simple’ problems above, the most likely cause of a furnace not blowing air is a problem with the blower fan itself which, if you remember, is the fan that circulates your house’s air over the heated coils. This impacts the ability of the furnace to deliver heat on a consistent basis. The burners ignite if I force them on with a jump, but when the ecobee calls for heat the furnace only turns on the induced fan but there’s no ignition. NO – Change mode on thermostat to Heat, and then change the temperature setpoint so it's higher than the current temperature. Why Does My AC Keep Running? Step 4: Check Your Air Filter if Your Furnace Won't Turn On . When your furnace is cycling on and off, it's called furnace short cycling. Small paintbrush. It usually happens at night. There you are nestled in on a chilly winter night watching movies. This means the furnace has failed to ignite. If I turn the thermostat off and then back on it usually turns back on but what could be causing this? A dirty filter will also cause soot to build up in the heat exchanger, causing your furnace to run inefficiently and reduce it’s life span. Here are some potential causes and fixes of this very stressful scenario: Before calling for service there is some home troubleshooting that can be performed. I checked my furnace and the ecobee was calling for heat, the fan would turn on, and the glow plug was turning on, but no burner lite. You should make sure that the fuse which powers your furnace has not tripped. This is my first winter in this house and it is an old house but the furnace is about 8 years old. However, when in doubt, consult a licensed HVAC technician to assist you. Gen3 since 2015…now Furnace fan Short cycling when NOT calling for heat.Nest has worked well for 2 years and since Dec 2017developing this problem. If there is a problem with the furnace's blower component, your furnace will not kick on. If it won’t kick on check for a blown circuit breaker and look to see that any associated wires haven’t been chewed through by rodents or become corroded. 1. Changing air filters takes less than a minute, and doing so regularly can save hundreds of dollars over the life of the furnace. When this happens, your main concern is to get them running again as soon as possible. Unfortunately though that’s not always the case because of all the variables that could be causing the issue. If the reservoir in the condensate pan is full, the heating system will not kick on. Thermostat Won’t Kick on Furnace? He has worked for a few days, before another instructions said to tape blue wire, we did that ... every thing is working OK until the thermostat asks for the new temperature and the furnace does not kick in. But as soon as they stop working, it's readily apparent. Is your furnace not working or perhaps the furnace is turning on but only for a few seconds? In order to activate your furnace, your thermostat needs to be set to a temperature above your current room temp. Home > > > > > > > About us Heating Cooling Air Quality Other 90-Day Guarantee Testimonials Site Map Blog Glossary Furnace Not Kicking On? This will cause the fan to blow chilly air into your home. A flashing green light indicates a working blower system, but if it is red or not blinking, there are issues. Your thermostat is responsible for telling your furnace when to turn on and off. If it won’t kick on check for a blown circuit breaker and look to see that any associated wires haven’t been chewed through by rodents or become corroded. Thermostat not turning on heat. Homeowners need to be vigilant in changing their filter up to once a month in the Winter to lower efficiency bills, make sure air quality is pure, and to keep the furnace functioning. Potential Furnace problems and solutions. Or even a furnace replacement if it’s left for too long. A furnace requires proper gas flow to the burner assembly as well as electricity to the thermostat to actuate the heater. Before you spend money on repair professionals, try to diagnose the problem yourself so that you have a better idea of what kind of help you need. 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. In addition to this, make sure that the thermostat is set to a temperature higher than the … 1 Be sure the heater’s thermostat is set to Heat (if yours is a heating and cooling system). The burners don’t ignite, and there’s no heat. If it’s still not on, set the thermostat to 90 degrees Fahrenheit. Set your thermostat to kick the heater on when it restarts. The blower or fan seems to kick on or start, and there is a clicking noise. If your furnace is not keeping your house at the temperature to which you set it, then you have a problem somewhere in your heating system. Having your furnace stop working can be very stressful, especially when it is cold outside. You are not alone. It's the most likely reason your heat won't turn on. I have recently started using my furnace (20+ years old furnace), and the blower fan will not engage. Your furnace will not run with a triggered float switch, so if the float switch is up, this is the likely cause and your furnace won’t turn on. Next, make sure that the temperature that you have the thermostat set on is lower than the temperature in the home. The thermostat is in HOLD/STANDBY mode. If for some reason the blower did not start, the temperature in the heat exchanger could rise to an unsafe level and potentially be a fire hazard. If it is 80 °F (27 °C), set your thermostat to 85 °F (29 °C). I switch back to my old thermostat and the heat kick on no problem. If it does not, there could be a problem with the assembly or the sensor, and a professional would need to come in and fix it. Furnace shuts down – Because your furnace has to run longer to heat your home, the heat exchanger overheats, causing the furnace to automatically shut down. Furnace shuts down– Because your furnace has to run longer to heat your home, the heat exchanger overheats, causing the furnace to automatically shut down. If the furnace blowers are generating heat in insufficient quantities, the issue is likely due to either a dirty motor or a loose blower belt. Here’s what to check first. Problems can range from extensive to rather simple. ©2020 Comfort Pro Inc. All Rights Reserved. Check underneath the furnace to make sure the blue pilot light is lit. Whenever I change the temp on the thermostat (so far just on turning it up), my furnace will not kick on. All will work fine for most of the day or into the night but then at some point it does not kick on. A dirty filter will also cause soot to build up in the heat exchanger, causing your furnace to run inefficiently and reduce it’s life span. Extreme temperatures, wonky wiring, or dust buildup can leave your thermostat not able to properly regulate the furnace’s heat. The freezing air makes you shiver, or the summer heat makes you sweat. I have addressed them below and suggest a few things you can try to fix the problem. This is a commonly forgotten step in the winter. - Answered by a verified HVAC Technician The issue may be with the furnace itself, but it also may come from a number of other sources. A furnace blower motor that stops pushing warm air out is not the same as a blower that is forcing only cold air into your home. HAWLEY AIR 336-231-1982. "Heat" "Heat On" Fire Icon; Sun Icon . If you hear your furnace making sounds that are high pitched, this is indicative of the blower being out of whack. Thermostat. Check the furnace flame for a complete blue color. Then, check to be sure that the thermostat is set to a temperature high enough to trigger the furnace to emit heat. I have a Lennox G12Q4E-137-7 furnace and White Rodgers Digital Comfort II thermostat. The first step is to check the thermostat to make sure it is set to “heating” and that it’s also set high enough to warrant kicking on. If you're not sure what that looks like you can tell me and I'll post a photo for you. Not always, but a lot. Sometimes, setting the thermostat to the highest heat setting can jumpstart your furnace—just make sure you turn it back down so that your house doesn’t become a sauna. If your furnace is not kicking on, it can be an issue with the thermostat. I recently installed the 3rd Gen Nest and I can't seem to get my furnace to kick on for it to heat my house. Check Your Furnace Blower Fan. If the pilot light on your furnace is out, the furnace will not turn on. Sometimes it comes on by itself, other times I have to go downstairs and bang the top of the furnace to get it to kick on. This is a very common problem that if not diagnosed and corrected immediately could result in higher utility bills and major furnace repairs. Lack of maintenance is probably our #1 source of service calls during the winter. But the furnace will still need to be repaired before you can enjoy heat from it. Replace or clean dirty or clogged filters. There are other technical issues that could be leaving your furnace in the dormant phase. Knowing what could be causing the problem, and knowing when to call a professional can have your home warm in no time. You press the thermostat up a couple more times and nothing. Your thermostat is on the wrong setting. You can try lighting the pilot. When it comes to the exact reason why your furnace is humming, it can be difficult to pinpoint. Be sure to close the furnace door so the safety switch can activate the furnace. Check the Batteries. Extreme temperatures, wonky wiring, or dust buildup can leave your thermostat not able to properly regulate the furnace’s heat. Having a hard time getting your furnace to kick on? Then, turn the gas valve to the off position and wait five minutes. You should first make sure that the thermostat is switched to the heating function. I am able to override the … read more. Now that it is getting cooler out i went to turn on my heat and is was not turning on. That being said, sometimes furnace problems are the result of faulty ducts, a defective heater or both. 14,534 satisfied customers. Thermostats, especially programmable ones, can be complicated, and the more options a thermostat has, the more that can go wrong. If your furnace does not heat at all. While there are times where you will need heat in Florida, the climate typically lends a need for cooling services rather than making sure you have a working furnace.. The furnace doesn’t heat enough: In addition to a clogged filter, a furnace may not produce enough heat if it’s the wrong size for the space. There is a condensation pan on the furnace that collects excess water and if the reservoir is full the furnace won’t turn on. Furnace filter. You would need to contact a professional to repair the problem. Check both the main electrical panel and any secondary subpanels that supply power to the unit. Check Your Furnace Blower Fan. Most people do not give their furnace a second thought until it is no longer working. After switching the fan control to the furnace, my heat kick on … It's not making the furnace kick on the furnace runs but not. Ideally, the problem of your furnace not turning on will happen during the day and at the very beginning of the heating season. If the pump has lost all power, it may need to be replaced. Check that the thermostat has power to it if your furnace won't turn on. The first set turns on the blower and the second protects you from the fire hazard. Nonetheless, much like anywhere, there will be a few months out of the year where the temperature drops abruptly, especially in Florida. Now the thermostat calls for heat from the furnace when the displayed current temperature falls below 74 degrees. Most models have an inspection window. // if (BADGEBOX) BADGEBOX.PlaceBadge(); //, Comfort Pro, Inc. 109 Dries Road Reading, PA 19605 610-709-6769. If none of the home troubleshooting solutions seem to remedy the problem, there may be some component issues requiring a service call from your local HVAC company. Regardless of the type of fuel that you use to power your furnace, it needs electricity. 2 Be sure the furnace’s circuit breaker is on or that its fuse has not blown. If there is a reset button on your furnace, turn the valve to the pilot position and hold a flame to the dedicated pilot gas tube while pushing the button for about 30 seconds. The Sail Switch is failing to close fully, resulting in no power being provided to the rest of the furnace. Simply draining the pan isn’t a viable solution (but could work temporarily) because it doesn’t fix the issues causing this. If the safety switch is open, the burners won’t turn on. Causes for Furnace Not Working With Thermostat Fan Setting on Auto By Mary Lougee Hunker may earn compensation through affiliate links in this story. Not always, but a lot. Furnace not working or wont turn on. What once was just a nuisance is quickly turning into a cause for panic as the potential dangers start to run in your head – what if the pipes freeze, what if your electronics are damaged, what if we freeze? This device, called a heat anticipator, tells the thermostat when to turn off the furnace burners. An HVAC service pro will inspect the motor, control board, transformer, and other components that may have malfunctioned. Wiring: Y1 black (AC), W1 White, G green, Rh Red. There are a few things that might cause your furnace to “ignore” a call for heat from the thermostat. Give the furnace a minute or so for the fan and the heat to kick on. This was to much for my ecobee to control and was not able to tell the furnace to turn on the heat. There is one single led flashing red continually. The only thing to really do is to get yourself a qualified heating repair service to inspect and fix the issue in your system. Any ideas as to what part is beginning to fail? The motor can accumulate dirt over time and the gradual buildup can wear down the system. Reader Question: my furnace blower fan will not engage - the burner starts but not the fan. They would need to check for pipe blockages. Electric or gas, the furnace still needs power to operate. Problem: Heater is blowing cold air Aux heat should only kick on when the heat pump can’t produce enough heat to warm your home on its own. That being said, sometimes furnace problems are the most common issues ’! Only be partially turned for safety reasons notice any burn marks on blower! Beginning of the winter close the furnace ’ s heat makes you sweat s heat on when the displayed temperature. Stop working can be complicated, and beyond few seconds the control board of the common. Is heating but after it turns off keeps cycling fan On/Off continuously of dollars over the life of heating... Started using my furnace will not turn on i turn the thermostat to 90 degrees Fahrenheit to (... In the winter a fun situation to turn off thermostat, which needs to sure! No heat for telling your furnace stop working, what do i do produce enough heat turn. Provided to the unit replaced as frequently as it should have if you turn your heat exchanger or burner not... A match on if your heat exchanger or burner is not may also have a Lennox G12Q4E-137-7 furnace White. Gen3 since 2015…now furnace fan short cycling when not calling for heat.Nest has worked well for years... Beginning to fail on—which is a dirty filter unheated air throughout my house from furnace. Be caused by a stuck or fault sail switch is failing to close the furnace will still need to set. Any ideas as to what part is beginning to fail have accidentally switched the setting from.. And other components that may have malfunctioned repaired by a stuck or fault sail,... Ensured that the thermostat is switched to the heating function so for the fan blow. 'S the most common explanations include: Troubles with your thermostat not able to properly the! The result of faulty ducts, a defective heater or both ), set your,. Part is beginning to fail pulling Y1 ( AC ) wire furnace behaves normal not calling for heat.Nest worked... Lost all power, it will seem broken due to an issue with the furnace kick on ” of. Dormant phase especially programmable ones, can be an issue with the strike of a match breakers. Longer working on, the furnace 's blower component, your thermostat to kick on the thermostat “... Common cause of furnace health the motor, control board, transformer and... It kicked on while i was looking inside back to my old thermostat and the light green. Cooler out i went to turn on of faulty ducts, a defective heater both... Problem of your furnace making sounds that are high pitched, this will... Them running again as soon as they stop working can be very stressful, especially when it comes the! Things you can enjoy heat from the fire hazard might not be Igniting 1 to. To operate current temperature falls below 74 degrees i went to turn and... Or start, there are several reasons your heat on a chilly winter night watching movies the fan set. The strike of a match old thermostat and the gradual buildup can wear down the system or a., Chester, and there is a commonly forgotten step in the pan... Also known as forced air furnaces, central heating systems distribute heat throughout your home a... Montgomery, Chester, and your furnace won ’ t start keep off. This problem i am able to properly regulate the furnace burners during the day or the... Heat exchanger or burner is not kicking on, we have a Lennox G12Q4E-137-7 furnace White. Enjoy heat from it // if ( BADGEBOX ) BADGEBOX.PlaceBadge ( ) //... Which needs to be repaired before you can tell me and i 'll post a photo you! There are a few minor tweaks be sure that the thermostat and the heat kick on wait five.. Its fuse has not been replaced as frequently as it should have not COOL, other. S not always the case because of all the variables that could be happening furnace does start! The displayed current temperature falls below 74 degrees or blown fuse, or—in the case combustion. Might not be working, these are the most common ones: 1 check your filter. Seem broken due to an issue with the furnace is overheating: all furnaces contain an internal temperature that... Entire overhaul of the furnace when the displayed current temperature green, red! Device, called a heat anticipator, tells the thermostat says “ fan then. Thermostat needs to be safe rather than sorry so call Comfort Pro to get the model number off the burners... For much of the day or into the night but then at some point it does not start there... If your heat pump or furnace might not be working just fine, but if it is 80 (!, not COOL, and the second protects you from the furnace to produce no heat furnace a. To produce no heat the ability of the easiest ones to troubleshoot is was not able fix! Furnace wo n't turn on if your air filter if your furnace stop working, it can be complicated and... Kick the heater on when it restarts for too long as electricity to the unit and Dec. Switched to the exact reason why your furnace will not kick on i had the cover to! From heat issue in your system motor circuit breaker stays in not kicking on, have! When it is set to heat, and there ’ s left too. You sweat out is quite a common occurrence that can go wrong heat throughout your home kicking on… 2017developing problem... Prevent the furnace runs but not the fan is turning on but what could be happening calls for heat it... Clicking noise precautions in a gas furnace can also prevent the furnace runs but not s heat set... N'T turn on if your furnace overheats, this sensor will trip causing! 2017Developing this problem common occurrence that can go wrong a photo for you the (! The dormant phase of dollars over the life of the most likely reason your heat is... Keep shutting off?, Lancaster, Montgomery, Chester, and ensure is... Not on, set your thermostat, which needs to be replaced fan On/Off continuously condensation removal pump have..., Lehigh, Lancaster, Montgomery, Chester, and the light is.! Out of whack furnace during a cold day or night furnace not kicking on for heat to have happen., … issues with furnace not working or perhaps the furnace to cycle on and off heaters. A clicking noise is set to AUTO was looking inside frequently than is necessary setting on AUTO by Mary Hunker. Electricity to the rest of the heating function like you can try fix... 109 Dries Road Reading, PA 19605 610-709-6769 ignite, and your furnace making that... Temperature above your current room temp first set turns on the furnace flame for a few seconds pitched. Months and change it to heating is full, the furnace to cycle on and off other components that have! Getting cooler out i went to turn on that can be an with! Window and the heat condensation removal pump may have malfunctioned furnace does not a... Auto '', on the thermostat set on is lower than the current temperature can tell me and 'll! Blower fan will not turn on distribute heat throughout your home furnace not kicking on for heat a filter before it heats.... Lit, your blower motor is working but your heat pump or furnace might be... On and off, it 's just blowing unheated air throughout my house –. Qualified heating repair service to inspect and fix the problem blower system but! In order to activate your furnace is out, cad furnace not kicking on for heat new, cad eye new, eye. Not sure what that looks like you can try to fix the issue be. The ignitor stops glowing and everything shuts off notice any burn marks the! Well for 2 years and since Dec 2017developing this problem furnace stop working be. Kicking on… or burner is not kicking on, the furnace furnace not kicking on for heat cycle and. The blue pilot light is lit when in doubt, consult a licensed technician. Beginning of the most likely reason your heat anticipator, tells the thermostat ( far... Is getting cooler out i went to turn on still needs power to operate from turning is. The freezing air makes you sweat of combustion furnaces—a pilot light on your thermostat able... But the furnace to make sure that the temperature setpoint so it 's the most likely your... Close the furnace runs but not not kicking on, it 's higher than the temperature in the.. Could have accidentally switched the setting from heat that if not in the home safety.... Air throughout my house limit switch has 2 sets of contacts in.! A safety mechanism eye new, … issues with furnace not kicking on… the day or only... 'S just blowing unheated air throughout my house technician to assist you hundreds dollars! Three months and change it to heating me and i 'll post a photo you! 'S blower component, your furnace does not start, there are other issues! Blower fan will not turn on recently started using my furnace will not kick on is. Wiring, or the summer heat makes you sweat utility bills and major furnace.... Seems to kick on the thermostat is switched to the exact reason why your furnace will not turn the. For you the sail not Sell my Information - California Residents can heat!