How To Fix Attic Fan Motor

Sometimes you face an issue where the attic fan s motor comes on but the fan blades don t move.

How to fix attic fan motor.

Most fans have an on off switch that bypasses the fan s thermostat. Take off the back using the screwdriver and locate the attic fan motor. If however the fan still doesn t turn on the problem is most likely with the fan motor or the thermostat. Some motor plates release by pressing or prying on the side of the fan housing.

Some attic fan repair problems are relatively simple and can be done without the help of a professional. Remove this by taking off the wires making a note of which ones belong where and unscrewing the motor from the base. If the motor is working but the fan blades are not moving the problem may be the belt. If there s a problem with the belt replace it with a new one.

You can start by checking the fan for debris and making sure that your fan s motor is properly lubricated. Remove the screw using a hex head wrench. Fix the wires into the correct positions using your pair of pliers. Step 2 add the new motor.

The nut will be on the fan blade collar. Have you had an roofing siding or insulation work done before you noticed the difference in performance. A screw or bolt may have come loose. Remove the fan blade nut that attaches the fan blade to the motor shaft.

It s best to hire an electrician to deal with electrical problems. Little or no airflow. The cause of the problem could be the belt. If there is any damage to the belt replace it with a new one.

Take your new motor and place it into the fan. Others are secured with a screw or two. How to test an attic fan motor and thermostat. If the fan comes on you have an electrical problem in the circuit the attic fan is on.

Then unplug the fan and remove the motor plate photo 2. Sometimes cleaning out your fan and or adding some oil is all it takes to correct a problem. Remove the outer casing of the attic fan and check to see if the belt is sagging cracked worn or broken. Turn off the power to the fan at the main breaker panel.

A fan that won t run is often caused by a failed motor or a bad thermostat.