Question about Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener

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Chamberlain garage door opener won't close

I just bought a house with a chamberlain whisper drive garage door opener. It was working fine until the emergency release was pulled while the door was in the open position. Now the door will open without a problem but the door seperates from the drive track when closing. The door stays in a semi open position while the drive track continues on the path. If we manually lower the door, the door will reconnect with the drive track to open properly (the emergency release is returned to the closed position.) Does this sound like something I should get a professional to look at?

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Read manual, if you have, on trolley engagement

Posted on Jan 17, 2009

  • marty metzger Jan 17, 2009

    read up on trolley operation

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My chamberlain Whisper Drive HD600 garage door opener Light's click but do not go on. The door is working fine.


Probably just a burned-out light bulb. The "click" you hear is the relay closing. Replace the bulb. *Disclaimer: I am not a lawyer, despite the handle. Words to live by: "Every creative act results from a sudden cessation of stupidity." -Edwin H. Land, inventor of the Polaroid Land Camera"The problem can always be solved with the materials in the room." -My college Physics Lab Professor

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The motor runs but it only opens a few inches and slowly goes back down its a chamberlain whisper drive model HD900D


Hi. I have seen this before, although usually not from chamberlain garage door openers.

Pull the release cord that unlocks the door from the opener, and manually open the door ALL the way open.

Then lock back in place in the open position.

Then use automatic opener to shut door.

It will close very slowly, but should close all the way.

Then, open the door again using the remote, and the door will once again open slowly, this time it should open all the way.

Then close door with remote, and door should now close as it is supposed, with the proper speed.

The slow opening and shutting is the system position sensor resetting itself.

This is why your door is acting up.

I would also look up by the belt drive connects to the front of the garage door opening, to make sure there isn't any dirt, cobwebs, or other obstructions on the sensor that may cause it to re-close the way it does.

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I have a chamberlain whisper drive garage door opener. When I open the door and it reaches the top it starts making a loud noise. It's like the motor is still trying to pull the door up but it can't...


SOUNDS LIKE THE UP LIMIT IS EITHER OUT OF ADJUSTMENT OR NOT WORKING.

TURN IT ABOUT THREE TURNS COUNTER CLOCKWISE. THIS SHOULD BE ENOUGH TO MAKE IT NOT OPEN ALL THE WAY. THEN ADJUST IT 1/2 TURN AT A TIME THE OTHER WAY UNTIL IT GETS CLOSE THEN SMALLER ADJUSTMENTS TILL YOU ARE HAPPY WITH WHERE IT STOPS.

HOPE THIS HELPS

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If the wall button will operate the door up but none of the devices do then look at the wall button. Find the lock button and push it for 2 seconds and then try the remotes again. This is your vacation lock. You can get a manual at chamberlain.com. Now if the door does not open or close with the remotes you can reprogram them. Press the colored learn button on the motor head and then press the button on the remote. Repeat for each remote. If they fail to program you will need a new logic board. Thanks BB

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The belt on my Chamberlain Whisper Drive dipping


Where the belt attaches to the trolley carriage which attaches to the door there is a black adjustment nut with a spring on it. Tighten it up more by turning it clockwise until the belt tightens up. The belt will droop a little when the door is all the way shut normally but should not during operation. If you tighten it up too much the belt will slap on the rail during operation. Make sure the spring is set on the adjustment screw too. This holds the belt tight over time. Thanks BB

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Door would not close all the way


DOES IT REVERSE OR STOPS BUT NOT TOUCHING THE FLOOR?

IF IT DOESN'T TOUCH THE FLOOR YOU EITHER NEED TO ADJUST THE DOWN TRAVEL OR LENGTHEN THE CONNECTING ARM.

IF IT REVERSES YOU NEED TO DETERMINE IF IT IS THE SENSITIVITY OR THE SAFETY EYES.

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Hi there. I have a Chamberlain Whisper Drive


I just had that problem this morning and the cause was that the springs that help hold the weight of the garage door were broken. This caused the garage door opener to raise the garage door a fe inches and then drop again. We called in a professional and $200 later we had new springs and everything works fine now.

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There isn't a trick but you must make sure you got the right remotes for your opener. The receiver which is part of the logic board can quit working and it sounds like this may be the case in your situation.

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