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

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Adj stop on opening model 940d

How do i readj the stop point for how far door opens

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I got the proublem fixed by reading the info that I found on your web sight. thank you for the way that you have it set up for the info was easy to find and to print the 1 page that had the info on it that i needed .
Take the day off with pay on me HA!! HA!!
BOB

Posted on Aug 20, 2008

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6ya6ya
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Posted on Jan 02, 2017

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1 Answer

Broken electric eye on garage door opener. How to bypass it to open door


The eyes do not stop the door from opening - They only work on the close cycle.

If the door will not open at all it may have a broken spring. Try unhooking the door from the opener.

If it works manually try the opener with the door unhooked.

NOTE: holding down the wall button overrides the safety eyes. This is the only bypass available (you need to get a new eye to replace the broken one.

Hope this helps

Apr 03, 2011 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

1/2 craftsman garage door opener is not traveling more than 10 inches, it is not hitting the limit switches df


The final locking piece on the motor shaft (the one with 2 set screws) was not far enough onto the shaft. The plastic cap that works with the RPM sensor would not sit far enough on the shaft and was not being read by the sensor.

I held the motor shaft in place from the front and pressed the ring further onto the shaft; tightened the set screws and pressed the plastic cap back on the end of the shaft.

The RPM cap sat far enough into the sensor for the door mechanism to work properly.

Jan 27, 2010 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

The garage door will go down to the floor and then stop and come back up on its own. also at times will only go down to remain open 3-4 inches


Sounds like you need to recalibrate the stop point. If its coming back up the sensors may be off alingment (make sure the lights green/amber are solid and not flickering) or the door may sense an object that isn there and reverse. You can google Chamberlain powerdrive door opener manual and dwnload it for programing instructions.

Dec 18, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chamberlain remote has stopped working, new


WHEN YOU CHANGE THE BATTERY NO NEED TO REPROGRAM THE REMOTE.
THE FLASHING LIGHT TELLS YOU IT IS SENDING A SIGNAL THAT IS BEING RECIEVED IT IS JUST NOT THE CORRECT CODE TO OPEN THE DOOR.
REPROGRAMING THE REMOTE SHOULD SOLVE THE PROBLEM

HOPE THIS HELPS

Sep 28, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

My garage door goes back up once it reaches the sensors. The sensors are seeing the door (metal part) as it crosses the sensor and going back up. I have tried adjusting the sensors to point away from the...


IF THE DOOR INFACT BRAEKS THE BEAM THE EYES NEED TO BE MOUNTED FURTHER AWAY FROM THE WALL. ABOUT 2 INCHES FROM THE ACTUAL DOOR HARDWARE.
IF THE DOOR IS NOT PHYSICALLY BREAKING TH BEAM SEE IF THE TRACK MOVES/TWISTS WHEN THE DOOR CLOSES THIS MAY TURN THE EYES OUT OF ALIGNMENT FAR ENOUGH TO REVERSE THE DOOR.

Sep 21, 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

My garage door opener doesnt close all the way.


The motor is probably either stalling because the door is too stiff, or you have a beam break detector that is being triggered when the door is halfway down.

Nov 23, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Garage door will not close entirely


door will not close all the way. will go partway down then reverse itself.

Oct 20, 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...

5 Answers

Chamberlan 1/2 hp security + not working


sounds like it is out of synch.do you have a manual on this model

May 19, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

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