How To Repair Attic Fan Motor

Others are secured with a screw or two.

How to repair attic fan motor.

Remove this by taking off the wires making a note of which ones belong where and unscrewing the motor from the base. Some motor plates release by pressing or prying on the side of the fan housing. Shield the twisted wiring connections with wire caps. If however the fan still doesn t turn on the problem is most likely with the fan motor or the thermostat.

Spray some lubricant wd 40 or similar into the air ports at the top bottom of the air holes in the fan housing for about 3 to 5 seconds. Then unplug the fan and remove the motor plate photo 2. It s best to hire an electrician to deal with electrical problems. Match the colors of the wires and then twist the ends of the bare wires together.

The bolts may be attached to the fan motor itself. A fan that won t run is often caused by a failed motor or a bad thermostat. Alternatively there will be a bracket that holds the motor in place. Step 2 add the new motor.

The cause of the problem could be the belt. Next strip the ends of the wires of the new motor. Sometimes you face an issue where the attic fan s motor comes on but the fan blades don t move. Using wire strippers strip the ends of the wires that you cut when you removed the old attic exhaust fan motor.

If the fan comes on you have an electrical problem in the circuit the attic fan is on. How to test an attic fan motor and thermostat. Remove the mounting bolts that hold the motor onto the steel flange. Tap the motor a few times with the handle end of a hammer or piece of wood as if you were swatting a bug.

Turn off the power to the fan at the main breaker panel. 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. Take your new motor and place it into the fan.

Fix the wires into the correct positions using your pair of pliers.