Why Is My Air Conditioner Fan Not Working?

Frustration might set in if you turn on the air conditioner only to discover that the fan isn’t turning and the temperature inside your home is rising. But before you lose your composure, it’s a good idea to troubleshoot to see if it’s something you can fix yourself or if you need to have a professional Carrier HVAC technician come out and service your air conditioning unit.

Why Your AC Fan Is Not Working

Since there are so many moving parts in your central air conditioner, there are several potential causes for its failed fan. These are only a few examples of possible problems:

Check Your Thermostat

You should check the thermostat first. The air conditioner will only work if the thermostat is set to heat instead of cold. To ensure you select the correct cooling temperature, you should go back to cooling mode or auto mode (alternating between cooling and heating automatically). The recommendation is to set your home’s thermostat at 23 degrees Celsius, which is both comfortable and energy efficient.

If you are using a programmed thermostat and experiencing this problem during a period when cooling is required, double-check that the comfort schedule is set appropriately for cooling.

Broken Fan Blade

If your outdoor unit makes strange noises when the system is on, it may have a faulty fan or a damaged fan blade. As a safety measure, switch off the unit at the thermostat before doing any troubleshooting. If the system goes on while you’re evaluating the fan, the broken or damaged blade might cause serious injury.

Cracked, loose, or damaged fan blades might throw the outdoor unit’s balance off or cause physical damage to other parts, all of which can result in strange noises. Having a fan repaired by a professional is the best approach if you find a damaged or broken blade. 

Blocked Air Filter

A filthy, blocked air conditioning filter is another frequent and easily fixed cause of a malfunctioning central air-con fan. The air filter removes particles as small as 0.3 microns from the air, helping to maintain clean air and internal components of your cooling system. An indoor fan may only seem to be adequately circulating air if a dirty filter is frequently cleaned or replaced. To put it plainly, if the airflow is severely impeded, the whole system will shut down. You might remedy the issue by cleaning or changing the air filter.

Some other reasons your AC fan might not be working include the following:

  • Tripped Circuit Breaker
  • Broken Fan Blade
  • Burnt Out Condenser Fan’s Motor
  • Frozen Evaporator Coil
  • Compressor Not Working
  • Malfunctioning Run Capacitor

If you are experiencing issues with a non-functioning central air-conditioning fan and have tried everything mentioned thus far, it’s time to schedule an appointment with certified professionals. These companies handle residential and commercial air conditioning repair and have the expertise to fix these and other problems quickly. They also help with information about air conditioner for sale and the different systems in the market.

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