Over the past few days the dryer has started to hum after being turned off. The humming noise is loudest behind dial. The first time this happened I opened the door and closed it, and the humming stopped. However now, it hums constantly when off. I have checked the filter, and have unplugged it, and plugged it back.
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f you hear the motor humming and not starting at all it most likely has a severe friction problem with the drum or motor. It could possibly have some type of garment jamming the blower wheel preventing the motor from starting too.
Open the dryer door and manually rotate the dryer drum counter clockwise (CCW). It should take very little effort to rotate the drum. If it's hard to rotate that could explain why the motor hums instead of starting up. If it turns freely, shut the door and see if will start. If it still hums and not start it may have bad motor or a low voltage supply to the motor.
This is usually the motor but not always. Remove the belt. Check for obstructions in the blower fan housing. Manually rotate the shaft of the motor. If the motor is very stiff, or impossible to rotate manually, and the blower fan housing is clear, you need to replace the motor. If the motor rotates freely, run the motor momentarily with the belt removed and the blower in place. If the motor runs fine with the belt removed, there may be a problem with the idler pulley or the clothes drum. Try to rotate the drum by hand. If it is very difficult to move, correct any problem with the rollers, pulley, rear bearing, then reassemble the dryer and try it again.If the motor hums but doesn't rotate on its own even with the belt removed--yet you can turn it freely by hand--you usually need to replace the motor or the motor start capacitor. You can also enter your model # for diagrams and illustrations at www.appliancehelponline.com
the humming noise is from the motor,see if you can spin the drum by hand,if it moves you have a bad motor,if it's hard to turn you could have something stuck in the blower wheel or the belt is jammed somewhere,the blower wheel is behind the duct that the lint filter slides into
You have a motor that has a thermal overload built into it. This is for the dryer's protection. My best guess is to replace the motor. But before you do all that, make sure the wiring is good from the receptacle to the controls in the back of the dryer. It could not have a good connection thus causing this noise.
can you rotate the drum by hand? the humming noise is the motor trying to turn,you should be able to turn drum by hand, it could a faulty 'condensur' for motor start up,get back if you can't sort it.good luck eire