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

1 Answer

Whe I push the wall mounted button the opener just hums

3 months ago I had an outfit work on this opener. They replaced gear kit adjusted limits and replaced capacitor. It has worked fine till now.
Any help would be Great..Thank you..Bob Bilbrey

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  • Joseph Chapman
    Joseph Chapman May 11, 2010

    Is the traveler all the way up to the bolt at the powerhead?


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  • 98 Answers

Sound like the "outfit" that worked on your operator did not change the bottom bushing on your motor mounting plate. Some "outfits" only change the white gear #41A2817 and some change the gear shaft assy. #41C4220A without changing the bottom bushing.

Posted on Jan 04, 2009

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1 Answer

Door will not move up or down,the drive motor just hums.


On the inside of the motor box, check to make sure the chain has not come off the gear.

Apr 05, 2010 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Door opens by itself at 3 pm everyday


Anytime a door opens and/or closes randomly or doesn’t work consistently I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation / interference stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

In your case the expansion of the wall in the afternoon may be enough to cause pressure on the wire to increase the problem.

HOPE THIS HELPS

Mar 13, 2010 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chamberlin Series 1100 Garage Door Opener will not move over 1 Ft


replaced gears on my neighbors and had same problem< took cover off of limit switches and found a switch had a bent arm. straightened it and all worked good.

Dec 31, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chamberlain 1/2HP garage door opener making noise but not opening


TIME TO REPLACE THE GEAR KIT PARTS ARE AVAILABLE IF YOU ARE A REASONABLE MECHANIC IT IS A DOABLE REPAIR - FOLLOW THE INSTRUCTIONS!!!!!

Apr 09, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Garage door doesn't open or close


You should check the gears inside the box, After years , the gears get dry and die, you can by online or from Sears the kit and replace the old gears. I just changed mine...not too difficult :) .

Mar 11, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Replaced sprocket and worm gear on chamberlain 1/2 opener


The easiest way to fix this would be to take the chain off the sproket with the door and the trolley in the down position. Next hit the wall button and pay attn. to weather the gear is turning clockwise, you want it to turn that direction, wait until the unit stops by itself, next put the chain back on and now you should be able to adjust the limits. otherwise you should call a local professional. They will usually service your door as well as fix your opener.

Feb 15, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chewing up Chain Drive


There is most likely a problem with the balance of the door. Release the door from the opener by pulling the red handle and lift the door manually. You should not have to apply more than 20lbs to lift it. When the door is at each hinge point and all the way up, it should stay by itsself. If it does not, the springs need to be adjusted or you will continue to replace gears.

Jan 22, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Garage opener cannot close, just replaced gears.


If the unit has photo eyes that could be your problem. not reattching the 4 wireing harness from the limit assy. can cause a similar issue.

Dec 13, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

3 Answers

Chamberlain Power Drive 1/2 HP - motor runs but does not move chain


I have the same problem. I just removed the cover and discovered a nylon gear had been worn out. I found lots of shavings inside the cover. The nylon gear is beneath the exterior chain gear. I am looking for information on how to replace it, if I can find the part. If you decide to look at yours, unplug the power and remove the sheet metal screws securing the bottom portion of the cener cover to the front and back covers. Then just remove the upper screws from the center cover. Good luck.

Oct 08, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Drive limits on my chamberlain wont register


Have NO IDEA what you are saying. Do you mean you adjust limits and chain moves too far? Or is chain not moving. Bad gears. Toss unit unless you are handy and can rebuild gears.

Sep 04, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

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