How To Test A Attic Fan Motor

A reading of zero means the fan motor winding is likely shorted and causing the breaker to trip or blow. It can sometimes be very confusing to test fan motors for people who don t have much experience. Step 3 test the connection between the thermostat and the power source.

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Let the wires that run from the capacitor to the motor.

How to test a attic fan motor.

If either of these conditions exists the fan motor needs to be replaced. Once done test that the motor still works by. Turn the attic fan off and unplug the motor from the thermostat. Step 2 test the thermostat.

Step 1 test the fan motor. How to test fan motor starting capacitors. Create a parallel circuit by placing the leads on. Switch the analog volt meter from ohms to volts.

This guide will hopefully make testing fan motors for you easy regardless of your experience level or type of fan motor that you are testing. How to test an attic fan motor. As you probably know fan motors can be designed for several different purposes most common of these are single phase motors. An infinite reading on the other hand may indicate an open motor winding.

Look for a resistance reading. Disconnect the wires that supply power to the motor with appropriate screwdrivers.