Is your air conditioner’s fan not working? Or maybe you’re not sure if it’s the fan that’s causing your AC issues.
In any case, you’ve come to the right place for answers. The following is a list of common AC fan issues and how to resolve them. Why is ac repair fan not running?
Simply follow the steps in this AC fan troubleshooting guide to get your cold air flowing again as soon as possible:
Scenario 1: The fan is not spinning, and the compressor cannot be heard.
First, turn on your air conditioning, walk outside to the compressor unit, and listen. Even if the fan is not operating, you should be able to hear the compressor hum. If you don’t hear anything, the fan isn’t the issue. Your compressor is not receiving power. This could be due to a faulty circuit breaker or contactor.
First, go inside and turn off the air conditioning. Then proceed to check the circuit breaker. You’re looking for a switch that says “HVAC,” “furnace,” “AC,” or “compressor.” If the switch is turned off, try turning it on and going inside to test the AC. If the switch is turned on when you check it, turn it off, wait a few seconds, then turn it back on and test the air conditioning.
Listen to the compressor outside. If you still don’t hear anything, it’s most likely a contactor problem. Continue to Solution 2.
The contactor controls the flow of power to your compressor unit. This explains why your compressor isn’t receiving power if it’s faulty. The only way to be certain that this is the issue is to measure the voltage of the contactor. This is not a job for inexperienced people. Unless you are an experienced HVAC professional, contact someone to inspect your system.
Scenario 2: The compressor is operating, but the fan is not spinning at all
If you hear the compressor humming, but the fan isn’t spinning, it’s most likely due to a faulty capacitor. The capacitor is what causes the fan to spin. When the fan is running, it doesn’t require much energy. However, starting the fan requires a significant amount of energy. The capacitor stores this energy like a battery until it is used to start the fan.
To see if the capacitor is the issue, try “kick-starting” the fan. To fit through the fan grate, you’ll need a long stick of wood or other non-conductive material. But first, make sure the air conditioner is turned on and set to run. Then, using the stick, push the fan hard enough to make it a spin. If the capacitor causes the problem, this should be enough to get the fan moving. If it begins this way, contact an HVAC technician to have your capacitor replaced. Always search for HVAC companies near me. So, you’ll get the best result.
The problem must be somewhere else if you can’t get the fan to start, no matter how hard you spin it.
If the fan does not start with a kick-start and you hear the compressor running, you most likely have a faulty fan motor. This is more common with poorly maintained systems or systems that operate in areas where a lot of dirt/debris is blown around by the wind.
The only thing you can do about a bad motor is replaced it. This is, however, an expensive option, so make sure you exhaust all other options on this list first. Then, have a reliable HVAC technician inspect it to ensure this is the problem. Also, if your HVAC system is over ten years old, it may be time to replace it entirely.
Scenario 4: The Fan Slowly Spins
The following scenario occurs when your fan spins slowly. This symptom may appear while your system is running or when you attempt to restart the fan.
In this case, the simplest solution is to replace your air filter. Unfortunately, many homeowners and tenants are unaware that this should be done regularly. An overflowing air filter is essentially a clog in your system’s airflow. This strains the fan, causing it to run slowly or burn out. You can find instructions if you don’t know how to check the air filter. If this isn’t the case, move on to Solution 6.
Scenario 5: The fan slowly and loudly spins
The following scenario occurs when your fan makes a loud noise as if it is grinding against something while spinning slowly. You may notice this again when attempting to start the fan. This likely means that the fan is obstructed by debris or another component.
Turn off the air conditioner via the thermostat and the circuit breaker. Examine the fan for any debris or components it may contact while spinning. This is made easier by manually spinning the fan with your kick-start stick. If you see any debris, clean it up, re-start everything, and listen to it while it’s running. However, if this does not resolve the issue or you can see the fan contacting another component, contact an HVAC professional to repair it.
Scenario 6: The fan/system randomly turns on and off.
Does your fan or system cycle on and off at random, regardless of your thermostat settings? You may even hear an electrical clicking noise as the system cycles on and off.
This is almost certainly due to a problem with the system’s wiring, control board, or another electrical component. To fully diagnose and repair the problem, contact an HVAC repair technician. Learn more about how much does ac repair usually cost. Mr. Quality is best for HVAC repair. Contact them at 708-748-1946.