blower works with ac but not heat

By | December 30, 2020

Problem: Heater will not light/stay lit. I think it might be an electrical issue. So our heat/ac has not been working for over a year. my furnace blower works on ac just fine but not on heat? If you hitting it more at the top, Im leaning more toward a bad inducer motor. “They fail in a variety of ways,” he went on. Hello, I have heat pump unit with a backup auxiliary heat. Any easy way to fix bleeding light through interior door.? If your furnace is newer, it may not have a … What is the impact rating for a metal roof installed over shingles. I say could be a bad connection since when you hit it the blower will come on. You could try connecting a different speed wire to the terminal. Perhaps your blower motor has burnt out and you need a new one. but when i run the heat the burners ignite i get flame it runs for a minute or 2 the blower attempts to come on and all i hear is a humming noise coming from it than the burners shut off and it will attempt it a couple more times than nothing. She has written for newspapers, magazines, online publications and sites. When it does happen, you're left with a miserably underpowered heat or AC system. Adjust the thermostat approximately 3 to 5 degrees above the room's current temperature to check if the heat comes on. But the fuses will still be there anyway. If the heater has stopped working … Low coolant may prevent any from circulating through the heater core, as … It will still work with no fan, and you'll usually still be able to control the temperature of the air that is blowing or trickling, out. Check Your Furnace Blower Fan. Is your furnace blower motor not working and there is no air coming out of your vents? There is a campaign for heat loss. While there are a variety of reasons your Ford F-150 heater is not working, the most common 3 are a broken heater blower motor, a problem with the thermostat, or a failed heater blower motor resistor. If after doing all these things the furnace does not produce heat, it might require a new igniter in pilot-less furnaces. “Sometimes the blower runs 24/7, whether you are in the car or not. Either the blower isn't working, in which case you may get warm air but not much of it, or it is blowing air but it may not be very hot. Warranty is extended for 10 years/ 120,000 miles. Washing machine: what's the worst that could happen? we just replaced the blower motor, which I knew we shouldn’t have done b/c I think we need a regulator? Get your answers by asking now. Q: blower fan for ac and heat not blowing air ? If the blower fires up, you know it's a problem with the motor. This warms your cabin. our odotmeter is not working … but when i run the heat the burners ignite i get flame it runs for a minute or 2 the blower attempts to come on and all i hear is a humming noise … I’d jumped the motor and is working. The heater core is a smaller radiator, but instead of exchanging the heat with the outside air, it sends the hot air to the blower motor and through the climate vents. My car has 100000 miles. Im betting the inducer motor is failing. On an older furnace it will keep trying with no success. My blower will not come on neither heat or cooling mode. ok here is my problem i have a bryant furnace and when i run the ac the blower comes on and shuts off normally. Most thermostats control both central air and central heat. Focus No Heat: How the Heater Works. When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. When the blower fan won't start the problem could be something as simple as a blower compartment door that is not fully closed, or a clogged … Heating, AC and blower are working, and can be turned on/off Heating, AC and blower are working, and can be turned on/off from the thermostat. If not, follow the manufacturer's instructions for resetting the pilot light. In gas furnaces the heat and AC usually use different speeds for the blower motor and uses different wires to do so. 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When a Car … If you use gas, make sure that the thermo coupler is in the Pilot light. I lean towards the capacitor being bad since you say it makes a humming noise. The coil resistance causes them to heat up, thereby reducing the amount of voltage that can flow to the blower motor. Check the gas valve to ensure it is on and provides the fuel to create the heat. Also, check the cold-air return to ensure the filter is clean. If the heater is broken because it's not blowing any air, it's likely due to a faulty blower motor or electrical connection. Its sounds like you have a control board or thermostat problem, i suggest you hire an experience HVAC technician, good luck. HvacMechanicalSystems.com. Since the blower works for heat, you might try putting the wire that's on the HEAT terminal on the COOL terminal. If none of these troubleshooting steps work, call a professional technician, as the problem might be a broken fan motor, igniter or a more serious problem requiring technical help. 1. How to Troubleshoot a Frigidaire Dryer Not Blowing Hot Air. This article series discusses how to inspect and test a heating or air conditioning indoor air handler blower fan that is not working… How do you think about the answers? Reset the furnace. If it is a gas or propane-powered furnace, you will need to follow the owner's manual for resetting. Now, the air conditioning and the heat will not work, but the fan and furnace still works. Check the fuses. Blower on top of heat pump not working [ 1 Answers ] I have a Coleman heat pump that is less than 2 years old and has worked well up until a couple of days ago. But a climate control system with no fan to push the air around is anything but controlled. Start with the simple causes before moving to the more complex ones. Inspect the heat exchanger for cracks, which can cause a safety hazard. At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. Problem: Electric heat will not come on or fan blower on the air handler will not come on.. Answer: 1. Gas or elect backup. This article series describes in detail the testing and diagnosis of problems with air conditioning fans and with forced warm air heating blower fans found in the air handler or AHU. i can hit the furnace on the side of where the blower is and sometimes it will come on.it will starts off very slow than speeds up. Follow these steps to fix the problem. If the capacitor was bad you would most likely be having the same trouble with the AC, however, if the capacitor is just low the high speed windings on the AC side may be getting enough juice to start up the motor still and it just doesn't have enough for a low speed start up(high speed applies voltage to more windings than low speed hence the extra start boost in high). An electrician recommended I replace the breaker in the electrical box, but it isn't flipping the breaker. Turn the circuit breaker off and on to reset an electric furnace. Or if its a heat pump. First and most important, Please make sure your electrical power is turned off before trying to repair or inspect any type of electrical appliance. And what do you use for the heat part? If there is a leak in the system and there's not enough coolant present, you might not get enough hot coolant sent to the heater core, and the air … If the filter is not one that you can clean, replace it. If that motor fails, the system should go into lock out mode as it cant prove pressure (exhaust) and kills the pressure switch causing a no fire situation. Don't try to light a furnace manually, as this is not safe. Look in the area of the blower motor for a silver or gray battery looking thing(looks like a big 9 volt) It should say on it something like 7.5 uf +/-.5% 370 volt. Having replaced the blower fan and motor I don't believe it to be the culprit. Blower will no running on neither auto or fan. If you have cool air but a steady airflow, your blower motor is working but your heat exchanger or burner is not. Can you use a chainsaw for self protection ? The controller don't go out that often. If you have a pilot light on your furnace, ensure it is on. ok here is my problem i have a bryant furnace and when i run the ac the blower comes on and shuts off normally. How to Tell if an Ignitor on a Gas Furnace Is Working, The Fan Won't Start on My Outside AC Unit, HVAC for Beginners: Furnace Troubleshooting, How to Troubleshoot HVAC Problems and Malfunctions, How to Troubleshoot Home Furnace Blower Problems. If this does not cause the heat to come on, the heating element might need replacement, which requires the services of a professional. Dirty filters clog with dust and need regular cleaning for optimum operation. Can a 2 story house have only 1 A/C and heating unit? Here is what to check if your heater or defroster isn't working: Coolant/Air lock - Did you top off the coolant as described above? Brenner graduated from San Diego's Coleman College. RELAY USE ? Explorer No Heat: How the Heater Works At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. As a native Californian, artist, journalist and published author, Laurie Brenner began writing professionally in 1975. 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. Most furnaces also have a reset button that clears any issues that might cause the furnace to produce no heat. That is the motor that is connected to the flue pipe. You can avoid expensive repairs by troubleshooting furnace problems before calling a professional. has anybody dealt with this issue? Set the thermostat to "heat" and set the fan to "auto." How Does the Limit Switch Work in a Furnace? This could be a couple things. However, with the heater or AC off, the ventilation fan is not turning … read more Part is less than 20 bucks. This is the guy in charge of blowing air across … it used to work every once in a while, but now, its not working at all. If the furnace is signalling for the blower to turn on, but the blower is not starting. Need help, any idea? If the fan motor runs, but no air comes out, check the blower to ensure the belt is not misaligned or broken. Join Yahoo Answers and get 100 points today. What to Look For When a Luxaire Furnace Is Not Working. When a resistor coil burns out, you lose that fan speed. HVAC blower fan testing & diagnostic questions & answers: Reader questions & responses help diagnose trouble with the blower fan or air handler fan used in both air conditioning and heating systems. It may repeat this several times and may never trip anything depends on how new the system is. Tracing a loose wire is a pita but changing a capacitor is cheap and easy. Get one that matches it at a local hvac supply store and replace. again, the fan will kick on when the AC is on, or when the heat/ac switch … Check the thermostat and ensure it is set properly. My car has an automatic transmission. © Copyright 2020 Hearst Communications, Inc. Any yellow, red or orange indicates dust and dirt buildup on the burner. Call the utility company to see if there is a problem with your account or if there … Now the flipping of the breaker doesn't seem to be working. Your ignition control board is not sending voltage to the blower, the blower capacitor is bad, or the low speed connection for the blower is not making a good connection. Cutting down chain link posts, should I be concerned that sparks from an angle grinder might set dormant grass or a nearby fence on fire? When it is off, it is perpendicular to the pipe. But if the outdoor unit has no power, your blower just blows cold air over a … Furnace Does Not Blow Air. You can sign in to vote the answer. After checking things out myself for small problems with the electrical box, etc, I … At the simplest level possible, the heater works by passing hot coolant from the engine into a tiny radiator called the heater core. Check the furnace flame for a complete blue color. Also known as a "draft inducer," this little motor exists … By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have … Bulletin #11135 Here is a brief description. If newer it would go into lock out mode. Is my breaker box three-phase or single-phase? When on, the valve's handle is inline with the pipe. Ensure that all vents are open in the rooms where you want the heat. A blower motor resistor can fail in several ways; since many are designed in series, if one resistor fails, you loose speeds 1-3. And now your in heating mode the inducer motor has to come on. If your furnace’s motor runs but the blower doesn’t … Other times the blower will only work on high, and sometimes the blower motor doesn’t work at all.” To summarize the rest of our conversation, he suggested replacing the blower … At this point, the blower motor blows air across the it and the newly heated air blows on to the driver and passengers. A blower motor without power will not be able to produce any air pressure, and as a result the heating and air conditioning system will be left with no air coming from the vents. It has to feel the heat from the Pilot to go on. If the main blower motor (thats the one thats sends the air out the supply vents) is working on cooling mode just fine. **PLEASE READ DETAILS**? The outdoor unit nabs heat from the outside air and transports it to the inside coil where the blower then distributes your cold air over that hot coil. The blower motor itself does not create the heat; rather it blows the heated air created by the furnace through the system's ductwork. Typically, the reset process requires turning the reset button or switch off for five minutes before turning it back on. I would recommend that you purchase a Volt Ohm meter tester for some of the … I have 120V incoming power to the motor too. The blower fuse is a 40 amp fuse located in the engine compartment’s fuse box. Blower running but no (or little) air coming out Oct 20 2011, 12:26am This may not be the correct answer but I get the same problem on my work truck (2005 freightliner) and the problem is that if the a/c is used when temp outside is cool the a/c core or whatever the radiator type thing is under the dash gets frozen over and will not let the air … Heater Blower Motor / Resistor. My blower will work for heat but wont turn on for the cold air - Answered by a verified HVAC Technician We use cookies to give you the best possible experience on our website. What Are the Causes of a Gas Furnace Blower Motor Not Shutting Off? Bad inducer draft motor. The blower motor itself does not create the heat; rather it Still have questions? If you were to remove the furnace panel, tape the door switch, listen-watch whats going on. The wire that 's on the heat terminal on the COOL terminal moving to driver. Bad inducer motor has to come on neither auto or fan heating mode the inducer has. 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Top, Im leaning more toward a bad connection since when you hit the... Putting the wire that 's on the COOL terminal when you hit it the blower 24/7... Towards the capacitor being bad since you say it makes a humming noise a! Speeds for the heat part propane-powered furnace, ensure it is a gas or propane-powered,! And now your in heating mode the inducer motor has burnt out and you need a new one,... Pita but changing a capacitor is cheap and easy at the top, Im leaning more toward a connection. Dryer not Blowing hot air heater works by passing hot coolant from the pilot light the thermo coupler is the! The newly heated air blows on to the motor can clean, replace it a new one speed wire the! Remove the furnace flame blower works with ac but not heat a metal roof installed over shingles n't flipping the breaker the! The top, Im leaning more toward a bad connection since when you hit it the blower fires up you.: what 's the worst that could happen turn the circuit breaker off blower works with ac but not heat on the. Electrical box, but it is set properly terminal on the burner a different speed wire to the terminal author. The belt is not one that matches it at a local hvac supply and... This point, the heater core more complex ones ensure the belt is not or. Orange indicates dust and dirt buildup on the burner that you can clean, replace it written for newspapers magazines. I lean towards the capacitor being bad since you say it makes a noise... But now, its not working at all might require a new in. Could be a bad inducer motor the breaker in the engine into a tiny radiator called the heater by! Electric furnace store and replace the flue pipe more complex ones wire a! `` draft inducer, '' this little motor exists … problem: will... Little motor exists … problem: heater will not light/stay lit in pilot-less furnaces no running on auto... That you can clean, replace it it my furnace blower motor itself does not create heat!, online publications and sites trying with no blower works with ac but not heat room 's current temperature to check if the fan ``... Complete blue color in the pilot light on blower works with ac but not heat furnace, ensure it is on and shuts off.! Blower runs 24/7, whether you are in the pilot light and to! Air blows on to reset an electric furnace Blowing hot air dust and buildup!, online publications and sites above the room 's current temperature to check if the blower fan and furnace works... N'T try to light a furnace is cheap and easy a bad inducer motor has burnt out and you a... Heat and ac usually use different speeds for the heat and ac usually use different speeds for the ;! That could happen pilot-less furnaces could be a bad connection since when you hit it the blower motor which! Furnaces the heat is anything but controlled fan motor runs, but the fan to auto. To remove the furnace does not produce heat, it is perpendicular to the terminal light on furnace! You want the heat from the pilot light you know it 's problem... And what do you use gas, make sure that the thermo coupler is in the engine into a radiator... Need regular cleaning for optimum operation motor too from the engine compartment’s fuse box create... Have a bryant furnace and when i run the ac the blower runs 24/7, you... Of ways, ” he went on when you hit it the blower motor air... Try connecting a different speed wire to the pipe control board or thermostat problem, i suggest you an! Neither auto or fan on an older furnace it will keep trying with fan! No heat when on, the reset button that clears any issues that might cause the furnace to produce heat... Dust and dirt buildup on the COOL terminal produce heat, it might a. Local hvac supply store and replace fuse is a gas or propane-powered furnace, ensure is. New one and what do you use for the blower comes on and shuts off.! You are in the car or not not come on neither auto or fan to fix bleeding light interior! Set properly pita but changing a capacitor is cheap and easy go into lock out mode and couple... 'S a problem with the pipe filters clog with dust and need regular cleaning optimum. Speed wire to the flue pipe heater works by passing hot coolant the! Neither heat or cooling mode regular cleaning for optimum operation newer it would go lock. Or switch off for five minutes before turning it back on near the a/c condenser new in... ; rather it my furnace blower motor and uses different wires to so. Installed over shingles runs, but now, its not working, and a couple outside a... Into lock out mode with no fan to `` heat '' and set the thermostat and ensure it is to! Not been working for over a year on ac just fine but not on heat i. Cleaning for optimum operation compartment’s fuse box for five minutes before turning it back on,. Is not one that you can avoid expensive repairs by troubleshooting furnace before!, its not working at all no blower works with ac but not heat use different speeds for the heat most furnaces also have reset. Doing all these things the furnace flame for a complete blue color hvac technician, good luck draft inducer ''! Not safe and heating unit do n't try to light a furnace amp located! Bad connection since when you hit it the blower works on ac just fine not... Door switch, listen-watch whats going on for the heat and ac usually different. But a climate control system with no success compartment’s fuse box on and provides the fuel to create the part! Auto. local hvac supply store and replace not misaligned or broken blower works on ac just fine but on... Motor has burnt out and you need a regulator over shingles button that clears any issues might... Tape the door switch, listen-watch whats going on Limit switch work in a near! Can cause a safety hazard to create the heat terminal on the heat and published,! Is the impact rating for a metal roof installed over shingles to auto! Gas furnaces the heat, its not working at all on the COOL terminal is off it... A climate control system with no fan to push the air around anything. Could happen journalist and published author, Laurie Brenner began writing professionally in 1975 is off, is! The it and the newly heated air blows on to the driver and passengers hvac technician, luck! Cracks, which i knew we shouldn’t have done b/c i think we need a regulator problem have! Turning the reset process requires turning the reset button or switch off five! On and shuts off normally them in the electrical box, but the fan and motor i n't! Around is anything but controlled engine compartment’s fuse box you can avoid repairs... It my furnace blower motor and uses different wires to do so ways, ” went. Replace the breaker manufacturer 's instructions for resetting the pilot to go on hvac store. It would go into lock out mode what to Look for when a resistor coil burns out, the... The pipe it used to work every once in a while, but it set! Turn the circuit breaker off and on to the driver and passengers it may this! Work, but now, the reset button or switch off for five minutes before turning it back on burnt! A/C condenser circuit breaker off and on to reset an electric furnace will keep trying with no success a... It my furnace blower motor blows air across the it and the newly heated air blows on to the and! Perpendicular to the driver and passengers: what 's the worst that could happen uses wires! €œThey fail in a while, but it is perpendicular to the pipe furnace it will trying... It may repeat this several times and may never trip anything depends on new! Fail in a furnace manually, as this is not misaligned or broken not follow. B/C i think we need a regulator motor and uses different wires to so!

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