- - Faulty thermostat. The thermostat is responsible for controlling the AC fan. If it is not working properly, it may not be able to send the signal to the fan to turn on.
- - Blower motor failure. The blower motor is what powers the AC fan. If it fails, the fan will not be able to turn on.
- - Clogged air filter. A clogged air filter can restrict airflow and cause the AC fan to overheat. This can cause the fan to shut off as a safety measure.
- - Loose electrical connections. Loose electrical connections can prevent the AC fan from receiving power.
Here are some troubleshooting steps you can try to fix the problem:
- Check the thermostat. Make sure the thermostat is set to "Cool" and that the temperature is set lower than the room temperature.
- - Clean the air filter. Remove the air filter from the AC unit and clean it with soap and water. Make sure the filter is completely dry before reinstalling it.
- - Check the electrical connections. Inspect the electrical connections to the AC fan to make sure they are tight. Tighten any loose connections.
- - Reset the circuit breaker. If the circuit breaker for the AC has tripped, reset it.
- - Check the fan motor. If the fan motor is making a humming noise or is not spinning at all, it may need to be replaced. Contact an HVAC technician for assistance.
If you have tried all of these troubleshooting steps and the AC fan is still not working, you may need to call an HVAC technician for further assistance.
