How To Check Thermostat On Exhaust Attic Fan

If the meter reads anything other than zero stop immediately.

How to check thermostat on exhaust attic fan. A how to demonstration of wiring your xxfirestat or power attic vent thermostat. Locate the thermostat casing and open it using a screwdriver. Note down the temperature settings for later reference. With a writing pad take note of the temperature settings power rating of the thermostat and fan capacity in cubic feet per minute for reference purposes.

If your fan has a thermostat turn the fan on and off bypassing the thermostat. If the fan comes on you know that the problem lies with the fan thermostat. Also note down the power rating and the fan capacity in cubic feet per minute. A fan that won t run is often caused by a failed motor or a bad thermostat.

Switch off the power of the attic fan and remove the power cord. An attic fan with a few blades may pick up a humming noise as it runs on a high speed setting. This way you can duplicate your old settings when you install the new thermostat. Sometimes it works out more economical to replace the attic fan thermostat instead of repairing it.

Check the intake for any debris. Shut off the power to the fan at the main service panel. Step 1 test the fan motor. How to attach a thermostat to an attic fan.

How to test an attic fan motor and thermostat. Look for the thermostat casing and using a screwdriver open it carefully. Step 2 test the thermostat. Also make sure the exhaust of the attic fan is high and near the roof with no obstructions.

Return to the service. Check the fan s electrical connections with a voltmeter. Turn the attic fan off and unplug the motor from the thermostat. Once done test that the motor still works by.

Mount the thermostat in the attic. How to test an attic fan motor.