Most fan motors work overtime, especially during the summer months. Locate the circuit breaker and ensure it hasn’t tripped. Why Is My Ac Fan Not Spinning - Cape Canaveral Fl Cocoa Fl Canaveral Groves Fl Colman Heating Air Inc As a result, your ac’s outdoor fan will no longer spin which restricts the air from circulating properly in the entire house. Ac unit fan not spinning fast . Capacitors can go bad over time and need to be replaced. Both fans have an equal part in cooling your home. Another problem that may cause your air conditioner fan to not spin might be a belt that has either broken or became loose. One of the simplest explanations for an ac fan not spinning is a dead fan motor. There are cases that the fan motor does not spin. One common problem is an ac unit with a fan that is not spinning and that is hot. If the fan on your ac unit isn’t spinning, there could be a problem with the capacitor and/or motor. If you suspect the fan motor is bad, the first ...