Complete line of attic garage and gable fans.
Master flow attic fan not working.
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.
Little or no airflow.
If the motor is working but the fan blades are not moving the problem may be the belt.
To pick one up for.
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When running at a high speed setting does the attic fan run hard or sluggishly.
Could be thermostat motor motor capacitor if it uses one electrical switch bird or bees nest stopping the fan from turning wire connection came loose squirrel chewed wires etc.
A fan that won t run is often caused by a failed motor or a bad thermostat.
Locate the thermostat casing and open it using a screwdriver.
How to test an attic fan motor and thermostat.
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If you notice that the attic fan is not switching on or off according to temperature variation it indicates that the thermostat is no longer functioning properly.
Remove the outer casing of the attic fan and check to see if the belt is sagging cracked worn or broken.
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I would go with an hvac contractor an electrician might be able to determine the cause but would not likely have the parts or routinely deal in them.
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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.
If it is rotating slowly or not producing a lot of air in the high speed setting you may have a problem with the exhaust or intake.
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Switch off the power of the attic fan and remove the power cord.
Not too hard to install.
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Attic fan not turning on.
If there is any damage to the belt replace it with a new one.