If the compressor is working, but the fan won't turn, then the problem is most likely with the motor and/or capacitor. When an AC fan is not spinning and no audible indications of compressor activity are detected, it is usually due to a lack of power or a malfunctioning compressor contactor.
Either it isn't getting proper voltage, the capacitor is sized incorrectly or wired wrong, or the compressor is mechanically locked up/has a motor winding issue.
If the fan won't start even with a kick-start, and you hear the compressor running, you probably have a bad fan motor. This is more common with systems that are poorly maintained or that operate where a lot of dirt/debris is blown around by the wind. The only thing you can do about a bad motor is to have it replaced.
The outdoor AC unit is humming like normal, but the fan isn't spinning, and you hear a buzzing noise coming from the unit. If this describes your situation, you most likely have a bad fan capacitor.
If you see the AC fan not spinning, the fan motor may have burnt out. If the fan motor has been working very hard and hasn't received regular annual or biannual maintenance, motor bearings can break down. Fan motors can be quite pricey to fix or replace. You may end up having to replace the entire system.
An outside AC fan not spinning could be caused by power supply issues, a faulty capacitor, a burnt out motor, contactor issues, wiring problems, debris or obstruction, a faulty thermostat or control board, or frozen evaporator coils. Contact your local Carrier dealer to help troubleshoot the issue further.
If you don't turn off the power to your AC, you run the risk of heating the unit's compressor past its limits as it attempts to cool your home without a functioning fan. If the fan doesn't start to spin on its own, it might be more than a bad start capacitor or contactor.
Signs of a bad AC capacitor include humming noises coming from the unit, slow starting or stopping of the fan motor, and frequent cycling on and off. AC capacitor troubleshooting should begin with checking for any visible signs of damage such as bulging capacitors or leaking fluid.
The capacitor is responsible for starting the motor and enabling the fan blades to spin. If it's faulty, you'll likely hear a humming noise while the fan remains stationary. Additionally, your ceiling fan might hum but not spin due to an issue with the fan's wiring or connections.
The average cost of a new condenser fan motor ranges between $300 and $700, depending on the model, your AC unit, and labor costs. While this isn't cheap, replacing your fan motors before they break can save you thousands of dollars in HVAC repair services.
If your compressor isn't working but the fan is,you may have a faulty capacitor. This is a common and fairly simple problem, but it's important to leave this repair to a qualified and experienced HVAC technician.
The fan will only be circulating the heat, though. If you only have a broken compressor, the rest of your air conditioner may be working without a hitch, including the fan, coils, and air filtration system. You could even keep using your HVAC for the fan component without damaging the unit.
For AC capacitor replacement, anticipate spending between $150 and $400, depending on the capacitor's type and accessibility. A bad AC capacitor is a fairly minor repair, and most HVAC technicians will recommend a repair rather than replacing the unit when the capacitor is the problem.
Resetting your AC unit usually involves turning off the power, waiting for a specific duration, and then turning it back on. This process can vary slightly depending on the make and model of your unit. Typically, you'll find a reset button on the outdoor unit. Press and hold it for a few seconds.
If your outside AC unit is running but no cold air is blowing inside, the likely causes include low refrigerant, a dirty air filter, or a faulty compressor. These problems reduce cooling efficiency. Have a technician inspect and repair the unit to restore proper cooling.
Whether the blades aren't spinning or the fan is making tons of noise, most issues with an electric fan are caused by poor lubrication or blockages in the vents. To solve most problems with an electric fan, disassemble the fan, lubricate the central pin and bearings, and clean out the vent and motor case.
If your air conditioner is running but the fan isn't spinning, it could be due to a faulty capacitor or a problem with the fan motor. Check the capacitor first for any signs of damage or bulging. If it looks okay, it's likely an issue with the fan motor itself.
Pay attention to any unusual noises coming from the ceiling fan. Humming or buzzing can indicate capacitor issues. If you notice these sounds, inspect the capacitor and consider consulting a professional if necessary.
If the start capacitor malfunctions or wears out, it usually prevents the HVAC unit or the blower from turning on. A bad run capacitor won't prevent the unit from starting, but it can lead to the unit shutting down prematurely, overheating or making more noise than usual.
#1 Most Common Air Conditioning Repair – Bad Capacitor
The fan of course makes a whirring noise, the compressor is like a deep buzz like a refrigerator running. Holding your hand above the fan should feel warmer than the outside air.
When the AC system's compressor works but the fan doesn't spin, you have a broken fan motor caused by a bad start capacitor on your hands. The start capacitor is an electric device similar to a large battery in your outdoor unit. It starts up the system by providing a jolt of stored energy to the electric motor.
First, you notice there's warm air coming from your vents. Then, you hear a humming or buzzing sound coming from your outdoor AC unit, and you see that the fan isn't spinning. Does this describe your situation? If so, it probably means you have a bad fan capacitor.
Generally, an AC capacitor will last around 20 years, but there are a number of factors that can shorten that lifespan. If you've noticed performance issues of any kind with your air conditioner, take the time to run your system through its phases and review its performance.