Your attic fan may not be turning on because of an electrical problem like a tripped circuit breaker a blown fuse or a bad connection.
Roof fan stopped working.
If the motor is working but the fan blades are not moving the problem may be the belt.
Best of all whole house fans use only one tenth of the energy that air conditioning does.
Electricity to fan not working if after flipping the breaker and testing a couple different outlets you discover that the issue is electric rather than in the fan itself you will likely need to call in an electrician to take care of it.
If there is any damage to the belt replace it with a new one.
Over time wiring can break down or weaken which causes this problem.
Roof vents with fans like the maxxfan roof vent w 12v fan ma00 04000k do not have a fuse anywhere in the fan itself.
How to troubleshoot a whole house fan.
Remove the outer casing of the attic fan and check to see if the belt is sagging cracked worn or broken.
By pulling in cooler air a whole house fan reduces or eliminates the need for air conditioning.
If the attic fan isn t turning on it could be an electrical issue a problem with the thermostat or the motor of the fan that s not working.