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Dryer 13 months old Heat is coming on but motor wont start. Checked power coming in to the dryer all

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  #1 (permalink)  
Old 02-13-2008, 11:51 AM
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Default Dryer heating motor wont start
Model Number: RED4440SQ0   Brand: Roper   Age: 1 - 5 years   

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Dryer 13 months old Heat is coming on but motor wont start. Checked power coming in to the dryer all ok. checked power to the motor power there but when you push the start button it wont start. heat does and heat wont go off when the door opens. What is keeping the motor from starting ? Motor makes no noise,belt fine took belt off still motor wont come on can spin motor by hand freely. tested door switch with ohm meter shows good.


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Last edited by crocidole67438 : 02-13-2008 at 12:11 PM.
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  #2 (permalink)  
Old 02-13-2008, 11:56 AM
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If your dryer doesn't tumble, check these:


Belt
Dryers have a drive belt that turns the clothes drum. If the belt breaks, the drum stops rotating. Then you need to replace the belt, and often the idler pulley, because the pulley tends to wear out at the same time.

Motor
If the dryer motor only hums when you press the Start button, the motor may be burned out. Here's how to test the dryer motor:
  • 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 or pulley, and 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.

Door switch
Your dryer can't operate at all if the door switch is defective. It's inside the dryer main housing near the door frame. Sometimes you need to raise or open the top or front of the dryer to reach the switch. If it's defective, you need to replace it.
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Old 02-14-2008, 02:29 AM
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Per the schematic, pins 4& 5 should be the wires to run the motor, just check. Pull dryer apart and stick 115 volts to these pins, if motor fails to spin, you probably have a bad centrifical switch. You can take the switch apart or order a new one.
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