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!!

Posted on Aug 20, 2008


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Posted on Jan 02, 2017


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Dryer doesnt stop when I open the door

Switch for the door is sticking or bad. It is usually the same switch that turns the light on when the door is opened. I just checked mine, it was sticking a little. I pushed it in as far as possible and sprayed a tiny amount of WD-40. Pushed in and out several times. No more stick. A very light oil might work also. Otherwise you have a bad switch.

Feb 28, 2015 | Washing Machines

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How do you stop the door leaving a foot open at the bottom?

To stop the door in a partially open position, the button on the wall switch or remote should be pulsed when the door is opening from the fully closed position.

Jul 12, 2014 | liftmaster Garage Door 1/2 Hp

1 Answer

My l/m door goes down but come right back up help

This can be one of two problems ! First problem can be that their is something blocking the infrared sensors that would cause the door to go back to the up position but in most cases if their is something blocking one of the sensors the door should not even move and just make a click sound and you will see the lights flashing on the garage door opener , it can also be a mis aligned sensor not pointing directly at the recieving sensor or vice versa! Ok if that was,nt the issue then you can make shure that the door isn,t traveling further then where it needs to stop to be closed, sometimes the chain or belt depending on your opener loosens up and can add an extra inch of travel to the door causing it to return to the up position, to fix this you have 2 adjustments on your opener ...1 will be a pressure adjustment can turn the adjustment to midway #6 to add some pressure so that the opener does not sense the xtra travel of the door , You can also backoff on the downtravel adjustment a turn or two and that will make the door not come down as far ...This adjustment is used to set how far the door goes up and how far you want the door to come down, you will see a picture of the door on both of these adjustments with an arrow letting you know which way to turn the screw ..remember each full turn of the screw equals 1/4" inch of travel to the door just follow the direction of the arrow or turn the screw counter clockwise for less travel !,,,Hope this helps you Sincerely Glenn

Jun 13, 2014 | liftmaster Garage Door 1/2 Hp

2 Answers

Sliding door

It may have a switch which engages when the door is fully open, if the switch is bad then the door would continue to try to open (too far)

Nov 01, 2013 | 2007 Honda Odyssey

1 Answer

I have a craftsman 3/4 garage opener. When it is traveling down it will contuniue past the adjusted stopping point and keep going untill it runs out of track and then travel back up.. It seems to only...

It sounds like your door is traveling just a bit too far in the down direction. Locate the 'down limit' adjustment on the side of your motor unit and turn this control a bit in the opposite direction of the arrow printed on the cover. Some tweaking will then be necessary to get it just right.

Oct 13, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

The garage door closes and then opens up again, I have to close it several times before it secures. There are no obstructions. Is this a sensitivity problem?

More than one thing can cause this type problem.

If the main light flashes 10 times when the door reverses it is a door sensor problem. Make sure they are pointed at one another and the small light on each one is not flickering ever so slightly.

If the door reverses when it hits the floor it is a sign that the door is traveling a bit to far. The adjustment for this is on the side of the motor unit. Turn the 'down limit' in the opposite direction of the arrow printed on the cover. Some tweaking will probably be necessary.

Jul 06, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

I have a craftsman opener 1996, I recently replaced the drive gear and the RPM sensor. I tried to open my door part way up to work inside my garage and now my door will not go up all the way. It goes down...

Make sure you put the black cup back on the end of the motor shaft and that it is pressed all the way on. Make sure the RPM sensor is plugged in. If neither of these are the issue, then you probably did not have the motor shaft pushed all the way back when you tightened the coupler after replacing the worm gear. Loosen that coupler up and from the front of the motor (opposite end in which the coupler is on) push the shaft back as far as it will go. Hold it there while you tighten the coupler back up and then try it.

If the main light is flashing 10 times when the door reverses it is the door sensors. Make sure they are pointed at one another and that the small light on each one is lit and not flickering ever so slightly. Tweak them a bit.

Mar 13, 2010 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

How do i stop a refrigerator door from swinging open too far?

It sounds as if your fridge is leaning forward and the weight opens the door to quick and to far, try to get it level and then it will only open as far as you open it.



Jan 14, 2010 | GE (PSS26MSRSS) Side by Side Refrigerator

1 Answer

Refrigerator door not closing

look at bottom of door. there is a metal bracket called your door stopper. this only allows door to open so far. if pushed open to far then you bent this bracket. bent back to normal position. your door will close

Jun 21, 2009 | Whirlpool Refrigerators

1 Answer

Garage door doesn't close properly

I too am having the same issue. I replaced my console control because my garage door was unresponsive and that fixed that issue. Now I have to hold the button down sometimes double tapping the button and then holding it down to close it. I believe the first place to check is the limit switch. Look at your owners manual or get online help in adjusting that. If that does not work you may need a new logic board. As far as the sensors go, one is a sender and one is a receiver. They have indicator lights and when they are aligned they light up. Check those first as a logic board is usually alot more expensive. Check ebay though as I did as there are plenty of good used parts available. Just get the numbers off of your logic board so you know what to look for as far as model number and date of manufacture. Good Luck.

May 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

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