Question about Friedrich Digital PTAC PDH12K35B Central Air Conditioner

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Fans wont turn without manual start

Once fan is started by pushing the button, rotation does not occur until manually started, then fans work fine until motor is turned off then it will not restart the fans rotation

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You have a bad start capasitor

Posted on Dec 12, 2008

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Posted on Jan 02, 2017

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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.

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1 Answer

My dryer will not start. It is not locked. I've turned it off and unplugged it for 30 minutes. All the buttons work fine, but the timer just flashes when I push the start button. Help!


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See also following indications from Repairclinic:

It won't tumble If your dryer doesn't tumble, check these:

Belt
Motor
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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.

Click here for a belt installation diagram.

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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