How To Fix Attic Fan Motor

Little or no airflow.

How to fix attic fan motor. Fix the wires into the correct positions using your pair of pliers. Sometimes cleaning out your fan and or adding some oil is all it takes to correct a problem. Your belt might have deteriorated to the point where it is slipping and not turning the blade effectively. 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. Sometimes you face an issue where the attic fan s motor comes on but the fan blades don t move. 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.

Turn off the power to the fan at the main breaker panel. Others are secured with a screw or two. Remove this by taking off the wires making a note of which ones belong where and unscrewing the motor from the base. You ll need to take out the outer casing of the fan and look to see if the belt is cracked sagging worn out or broken.

If the motor is working but the fan blades are not moving the problem may be the belt. The nut will be on the fan blade collar. Remove the outer casing of the attic fan and check to see if the belt is sagging cracked worn or broken. If the fan comes on you have an electrical problem in the circuit the attic fan is on.

It s best to hire an electrician to deal with electrical problems. A fan that won t run is often caused by a failed motor or a bad thermostat. Most fans have an on off switch that bypasses the fan s thermostat. Remove the fan blade nut that attaches the fan blade to the motor shaft.

Step 2 add the new motor. Remove the screw using a hex head wrench. If however the fan still doesn t turn on the problem is most likely with the fan motor or the thermostat. Then unplug the fan and remove the motor plate photo 2.

If there s a problem with the belt replace it with a new one. Take off the back using the screwdriver and locate the attic fan motor. You can start by checking the fan for debris and making sure that your fan s motor is properly lubricated. Slide the fan off the motor shaft.

The cause of the problem could be the belt.