There are a few common reasons why an attic fan might stop working. One possibility is that the fan has simply worn out and needs to be replaced. Another possibility is that the motor has burned out and will need to be replaced. A third possibility is that there is a clog somewhere in the system, preventing the fan from running properly. Finally, it's also possible that there is a problem with the wiring or with the switch controlling the fan. If you're not sure what's wrong, it might be best to call in a professional to take a look at things and diagnose the problem.

There are a few reasons why an attic fan might stop working. One common reason is that the fan belt has broken. If this is the case, then you can usually fix it by replacing the belt. Another possibility is that the fan motor has burned out. In this case, you will need to replace the motor in order to get your attic fan up and running again. Finally, it's also possible that there's something blocking the fan blades from spinning properly. This could be due to lint or dust buildup, or because of some other obstruction in the way.