When the temperature within the attic reaches a set point the fan will turn on and start venting the heated air cooling the attic space.
Attic fan thermostat test.
Step 2 test the thermostat.
Replacement thermostat for the lomanco 2000 1800 power vent factory set adjustable thermostat on at 100 degree farenheit and off at 85 degree farenheit push to test button model number.
A fan that won t run is often caused by a failed motor or a bad thermostat.
Once done test that the motor still works by plugging the motor into an extension cord that is connected to an outlet.
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How to test an attic fan motor and thermostat.
Ventamatic 1600 cfm mill electric powered gable mount electric attic fan 180 model cx1600ups 79 29.
Step 1 test the fan motor.
Likewise adjustable thermostats will shut the fan off.
Broan nutone 1020 cfm silver electric powered gable mount gable louver vent 113 model 353.