The outdoor fan is an essential component of your air conditioning system. It works with the compressor to circulate refrigerant and cool the air in your home. If the outdoor fan is not working, it can cause serious problems for your AC system. Here's what can happen if your AC outdoor fan is not working:

Decreased Cooling: When the outdoor fan is not working, the air conditioning system will have difficulty cooling your home. Without the fan, the compressor will not be able to remove heat from your home effectively, and the refrigerant will not be able to circulate properly.

Increased Energy Bills: A malfunctioning outdoor fan can cause your AC system to work harder than it should. That can lead to increased energy bills, as your system consumes more energy to keep your home at a comfortable temperature.

Compressor Damage: If the outdoor fan is not working, it can cause the compressor to overheat and potentially fail. The compressor is one of the most expensive components of an air conditioning system, and its failure can be a costly repair.

Ice Buildup: If the outdoor fan is not working, the air conditioning system may develop ice buildup on the coils. That can reduce the system's effectiveness, as the ice is a barrier between the air and the refrigerant.

Short Cycling: When the outdoor fan is not working, it can cause your AC system to short cycle. Short cycling is when the system turns on and off frequently, which can cause unnecessary wear and tear on the components and increase the risk of breakdowns.

If you suspect your AC outdoor fan is not working, addressing the issue as soon as possible is important. The longer you wait, the more damage the malfunctioning fan can cause to your system. Contact a qualified AC mechanic to diagnose and repair the problem. Sometimes, the issue may be a simple fix, such as a faulty capacitor or loose wiring. In other cases, the fan motor may need to be replaced. A qualified technician will be able to determine the cause of the problem and make any necessary repairs to keep your AC system running smoothly.