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Listen for a humming noise — this means the fan blades are working. If you hear a hum but notice the AC unit fan not spinning, then there could be one or more things wrong with the unit. This is one of the easiest heating issues to resolve. But if you set the unit to auto, then you’ll find that the heater will only turn on when it drops below the temperature you’ve set the unit to. Since furnace blowers need more power than the circuit board can provide during startup, they typically use capacitors to hold startup energy. It wouldn’t provide enough juice to kickstart the fan.
If you have a programmable thermostat, be sure that a program is not set to tell your AC not to run. The reason for your AC unit fan not spinning could simply be a power issue. Subsequently, your AC fan will stop spinning, and the unit won't work. If the matter is not serious, you can just go to your circuit breaker box flip the switch back on.
Stay Inside and Check the Evaporator Coil
To check for a broken fan blade, turn the unit totally off and look through the top of the unit to see if your fan blades are intact. If one is broken or damaged, keep the system off and call your local Trane expert for professional assistance. One of the most common reasons why your AC fan is not spinning is because the thermostat is not set correctly.
If the issue is a tripped circuit breaker, keep in mind that it could have been caused by a power surge of some kind, possibly weather related. If the system continues to trip the circuit breaker, shut it down and call a professional HVAC technician. If the system is on, but set for heating instead of cooling, the system likely won’t operate. Switch it back to either cooling or auto mode , and check that an appropriate cooling temperature is selected.
Circuit Breaker is Tripped
The fan in your outdoor unit connects to a condenser fan motor which turns the blades. AC fan motors that are malfunctioning result in poor system performance and fans that either doesn’t run at all or work very slowly, often with a burning smell. You need to call your HVAC company to come to inspect the air conditioning unit and make repairs.
The inside of the home has one, and the outdoor AC fan is the other. The indoor blower fan directs cool air into the house. The outdoor fan helps remove the hot air from your home. If you experience either AC fan not working, it affects the efficacy of your HVAC unit leading to lukewarm air blowing into your home.
How the Furnace Fan Works
Simply call a professional to come and clean things out. Be sure to schedule regular cleanings so that you can enjoy clean air and efficiency throughout the year. The noises are most pronounced when starting or shutting the furnace. In some cases, your fan needs a little help to keep working.
If there is no flame in the furnace, then the furnace will shut down to prevent unburned gas from leaking out. Another common reason for your AC fan not working is a bad capacitor. It also speeds up the repair process when you can correctly articulate your issue with your local HVAC technician. Your outdoor fan is what transfers the heat from your home to the outside air and is located within the outdoor unit. Make sure to turn off your furnace, air conditioner, or any electric device when troubleshooting to avoid safety hazards. While you’re at it, check if there is rust in the pipe and if there is soot in your furnace.
Common Reasons Your AC Unit Fan is Not Spinning
Turn off the gas first, and then clean the soot off of the pilot. You can simply use a tool to scrape off the soot until you get down to clean metal. After you’ve removed the soot, turn the gas back on and look to see if it ignites properly again. During the wintertime, our service technicians often get calls from frustrated homeowners who have recently discovered that their furnace blower is not working. While we’re always happy to help these homeowners, the problem is often something that they can easily fix themselves.
If your belt has gone bad, it will make unusual noises like squeaking from slippage. This is always the first thing you should check before undertaking any other troubleshooting steps. Dealers can answer questions, help you find the right products for your home, and repair your system. Follow our interactive troubleshooting guide to find answers to your system’s problems.
The gas valve is responsible for delivering a steady stream of gas to the furnace’s burners. A dirty high limit switch will trip excessively, even when it’s not supposed to. If your furnace’s high limit switch is dirty, then you can scrub it off using sandpaper or a scouring pad.
All you have to do is find the circuit breaker and determine what set it off. The outdoor condensing unit holds the compressor and fan motor, which both receive power from the contactor. The contactor is an electrical switch and it can go bad with age. If the contactor fails, the fan motor won’t receive any electricity and you’ll notice the outside AC fan not spinning. After you repair your AC system, make it a point to have your local Sears air conditioning professional stop by on a yearly basis for a maintenance checkup. With regular service, your system will last longer, work more efficiently, and save you money on your energy bills in the long run.
The condenser fan is the key to the lifespan of your HVAC unit. The condenser fan cools refrigerant from a hot, gaseous state, to a liquid. When the condenser fan is well-maintained, it prolongs the life of the entire HVAC unit. A bad furnace control board will manifest itself in a number of ways. Usually, it’s pretty obvious when you have a bad control board. For example, you’ll smell that “burnt electronics” smell coming from your furnace.
When your AC isn’t cooling properly, you may want to check your outdoor unit. If the outdoor fan isn’t spinning, first check the breaker or fuse box. If a reset doesn’t correct the problem, there may be a couple of problems at work here.
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