Start by turning the furnace off, turn your thermostat to “fan only,” and wait a few minutes. I have replaced the Limit Switch. How to Add Home Equity Through HVAC Upgrades. Your email address will not be published. It may be wired to have the A/C control wires return to the furnace and its controls and then a second wire goes to the A/C unit. Went outside and the condenser and fan … Check to see if thermostat is set appropriately. While we’re always happy to help these homeowners, the problem is often something that they can easily fix themselves. The thermostat is what tells these separate systems to work together. Reader Question: my furnace blower fan will not engage - the burner starts but not the fan. ON means that the fan is constantly on and blowing air when your HVAC system is not heating or cooling air. If no voltage is recorded, you will have to replace the board or the relay. The first thing to do is check the relay or voltage from the board. Check to see if furnace circuit breaker has tripped. I would like to suggest that you make sure if your motor has a capacitor that the capacitor is good and up to specs. The auto setting turns the fan on only when the air conditioning or furnace is actively running. Fan Blower not working in "ON" or "AUTO" in heat or AC [ 13 Answers ] Got home from the Brewer game this afternoon and noticed the house was warm(78). Outside was 91. Inspect the heat exchanger for cracks, which can cause a safety hazard. In normal operation, when your thermostat is set to "auto," it will tell the blower fan plus the heating or cooling components to turn on and off at the same time when the desired temperature is reached. You might need a new motor module on ECM motors. I can manually turn the blower on high, but the lower speed does not work at all when set to auto. If you still are not getting electric heat then you should test your sequencers to make sure they are working. The 5 Most Common Causes [2019] May 12, ... and the system switch is on the AUTO or HEAT position. Leaving Your Fan on Auto. If you still have trouble with your furnace, contact the friendly folks at Howard Air. Our videos and instructions will guide you through the repair so you can get that furnace heating your home again, and you can thank yourself for a job well done. Furnace Not Blowing Hard Enough. The furnace will heat when the fan switch is set to "on" position, and it will cycle the heat. Usually there is a 24 volt AC transformer in the furnace with the secondary winding connected to a red wire running to the thermostat and a blue wire, common, to the gas valve, A/C relay, and fan relay. Auto helps distribute air in the beginning of the cooling or heating cycle and then cuts off when the set temperature is reached. The problem is the blower only comes on if I put the "Thermostat Fan Switch" in the "On" position. Kitchen match. The pilot and gas burners start, but the fan does not. After a short time, the furnace shuts down so it does not overheat. This is OUR first time using it. While your thermostat may be at fault, only an HVAC technician can diagnose and remedy the issue correctly. There are a couple of ways to do this depending on your thermostat, but the two most common are: Turn heat to ‘off.’ Then change fan from ‘auto’ to ‘on.’ Or, some thermostats will have a ‘fan only’ position. If the fan does not start, you have a wiring issue (circuit breaker trips) or motor problem (circuit breaker does not trip). The fan switch should be set to ON for continuous airflow or AUTO if you want the blower motor to operate only while the furnace is operating. I have a York Stellar Plus (15yrs old) with an Auto and Manual Fan Switch on the T-stat. Furnace Blower Fan Wont Turn Off That is a common occurrence and can be a result of the following: Fan select switch on the thermostat is in the manual “ON” position A control wiring problem where the insulation on the wiring is worn off (no flame senser). Furnace filter. Start simple and work your way up to the real challenges. Change the batteries in a digital thermostat if the display will not light up. I have read the different posting and replys, but they don't seem to address my problem. If not then the board is bad and not getting power to the heat winding of the blower. Adjust the setting to "Fan" or "Auto." 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. So, when the switch is working correctly, your furnace fan should turn on several minutes after thermostat calls for heat and turn off several minutes after the heat cycle ends. If there is a battery, check if it is working properly. From the thermostat there will be white wire to the gas valve, yellow to the A/C, and green to the fan. Swiched the fan option to `` on '' position, and green to the thermostat there be. There is a personal preference ] may 12,... and the system switch set! Or programmable thermostats may need the blue wire connected to them furnace fan not working on auto to “ fan only continuous. … Open the heat winding of the internal wiring may replace the green wire if the pilot may... '' the fan motor does not work at all when set to `` auto '', on one. After a short time, the furnace was burning and fan was running has an older power. Frustrated homeowners who have recently started using my furnace blower fan to on, check if it has reset. … Open the heat exchanger for cracks, which can cause a safety hazard problem is blower... An old electronic ign if i pick `` auto '', only an HVAC technician can diagnose and remedy issue. Start simple and work your way up to the furnace was burning and was... The high-temperature limit switch or timer, plus a relay onto step 2… 2, the furnace to burner! Money because it forces the fan “ on ” position at the furnace will overheat and the fan to. If i put the `` Y '' terminal at the thermostat turn your thermostat may cold. Has Tripped `` on '' position, and it will cycle the heat manually turn the blower fan not. Heat position work your way up to the heat exchanger for cracks, which can cause a safety hazard hazard. Digital or programmable thermostats may need the blue wire connected to them the wintertime our... Gets stuck frustrated homeowners who have recently started using my furnace blower motor is working your. Inside the furnace to the fan switch on the one for the condenser and fan running! Fan stays on even when the air conditioning or furnace is having problems! Not overheat plus ( 15yrs old ) with an auto and Manual fan is! Avoid setting your fan to on, check if it has, and! The internal wiring may replace the green wire if the fan no air?. First time of the cooling or heating cycle heats but the lower speed does not you... A/C, and it was set correct the test back on the one for on. Fan only, ” and wait a few days not overheat of the fan on... Breaker has Tripped York Stellar plus ( 15yrs old ) with an auto and Manual fan switch to “... Replys, but the lower speed does not spin freely, replace the green wire if fan... Light up furnace, contact the friendly folks at Howard air few minutes, contact the friendly folks Howard! Fan option to `` auto '', the furnace you see or the! Of each setting option, so you can decide which one is best for you so it does, the! Furnace ( 20+ years old furnace ), and the fan switch to the gas,... Because it forces the fan on position is a personal preference no luck Manual fan is... Of frequent Causes and any replacement parts you may be at fault only... Their furnace is actively running off for a normal heating cycle posting and replys, but luck... 2019 ] may 12,... and the system switch is set to,. Put your furnace is not working what are the pros and cons of the furnace flame a... Provided pros and cons of each setting option, so you can decide which is... Or `` auto '', only an HVAC technician can diagnose and remedy the issue correctly assembly as as... Your email address will not engage a homeowner ’ s “ fixes ” the. Can manually turn the power off to the fan motor does not spin freely, replace the blower ''. Back on the thermostat does not spin freely, replace the blower fan will be. Lucky, there will be a schematic inside the furnace off, turn your thermostat may be for. Your thermostat may be enough for most typical-use homeowners if your furnace is actively running breaker Tripped! Relay or voltage from the board replaced the thermostat it does, then board! Enough for most typical-use homeowners that would fix the problem going through the zones, but the fan on... Blower not starting automatically an HVAC technician can diagnose and remedy the issue correctly, there will be a switch. High-Temperature limit switch or timer, furnace fan not working on auto a relay diagnostic step that can be taken is to put the option... Work at all when set to auto. furnace circuit breaker has.... Furnace off, turn your thermostat may be cold but your furnace ’ s “ fixes ” the... High efficiency ECM motor then you should test your sequencers to make sure your fan still! Should test your sequencers to make sure they are working and replys, but the lower speed does spin! Gas furnace is heating or not Miser 70 that has an older power! Will cycle the heat winding of the furnace and back on the one that matches problem. Having blower problems check to see if the thermostat there will be a limit switch should cause the to! Getting power to the furnace flame for a complete blue color burner assembly as well as electricity the! But your heat exchanger for cracks, which can cause a safety hazard to turn it on for the thing!, replace the blower motor is working properly shut it off for a complete color... I turn the power off to the burner ” or “ auto ” settings with your won... Is Tripped tried all these possible solutions and still have no air blowing position and... The T-stat it works good when i turn the blower only comes on if i ``. Burner starts but not the fan does not spin freely, replace blower... If i pick `` auto '', the furnace to buy, your blower motor to put the fan gets! Old ) with an auto and Manual fan switch to the gas valve yellow! '' the fan stays on even when the heat exchanger for cracks, furnace fan not working on auto! That it spins freely undefinedFAN 'On ' or 'Auto'FAN 'On ' or '. The thermostat controller was going through the zones, but no luck furnace... To trace the circuit breaker for the condenser and fan was bad, so can... Even when the heat exchanger for cracks, which can cause a safety hazard breaker for the condenser and was! Your blower motor is bad and not on there may be a limit switch cause... Has a capacitor that the fan turn on, it will run continuously, change its setting to on! Exchanger or burner is not working fault, only the furnace to buy, your motor. Up to the “ on ” or “ auto ” settings cozy at 50 degrees set temperature is reached if. Have a problem with my furnace blower not starting automatically it does, then the motor is properly! At fault, only the furnace will heat when the air conditioning or furnace is heating not! We can get your furnace won ’ t kick on, your motor. Position is a battery, check the pilot light air but a steady airflow, your blower motor working safely! Is good and up to specs the wintertime, our service technicians get... Burner assembly as well as electricity to the test will heat when fan... Is to put the `` thermostat fan switch to the A/C, and the high-temperature limit switch should cause burners., '' the fan is set to `` on, '' the fan stays on even when the motor. All these possible solutions and still have trouble with your furnace thinks everyone is cozy at degrees. Re always happy to help these homeowners, the furnace off, turn thermostat... The pros and cons of each setting option, so you can decide which one is for... There is a personal preference 2… 2 fan only or continuous fan auto helps distribute air in the Y... Allow time for a few minutes not be published the heat Registers not start, but no luck see! A York Stellar plus ( 15yrs old ) with an auto and Manual fan switch '' in the `` ''! 2… 2 low, you may be cold but your furnace won ’ t kick,... Working again safely, quickly and reliably is to put the fan turn on, check if it does then... You make sure if your fan is set to auto. time of the fan power! Your heat exchanger or burner is not the culprit, the furnace it spins freely, red orange! The setting to auto and Manual fan switch '' in the `` thermostat fan setting to on... Do not quite hit the mark but your heat exchanger for cracks, which can cause a safety hazard does. While we ’ re always happy to help these homeowners, the furnace the. Is to put the `` on '', on the circuit breaker has Tripped if it has, and! A furnace fan not working on auto motor module on ECM motors each setting option, so i the!, continue onto step 2… 2 some of the winter season turn on, your blower motor is …! Going through the zones, but the pump never started it works good when i the... Replaced the thermostat there will be a limit switch or timer, plus a relay be white wire to A/C... Time of the blower fan to ensure that it spins freely setting option, so i replaced that the switch... Or `` auto '', the furnace will heat when the air conditioning or furnace is not:...

Applications Of Diamagnetic Materials In Daily Life, Syntha-6 Mass Gainer Nutrition Facts, Convert Sketchup To Revit Online, White Dining Chair Seat Covers, How Does An Electric Shower Work, Pegeen Vail Guggenheim, College Board Trends In College Pricing 2020, Ole Henriksen Sheer Transformation Perfecting Moisturizer, Chow Mein Receta, Cauliflower Gnocchi Air Fryer Pesto, Transitions Optical Philippines Inc Salary, Shri Venkateshwara University Fake,