20 Most Recent Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener Questions & Answers


IF THE DOOR OPENS WITH YOUR REMOTE BUT DOESN'T CLOSE (AND WORKS NORMALLY FROM THE WALL BUTTON) THE PROBLEM IS IN THE SAFETY EYES - CHECK TO SEE THAT BOTH LED'S ARE LIT.

IF NOT CHECK WIRING POLARITY - CHECK FOR BROKEN WIRES - CHECK FOR ALIGNMENT AGAIN.

Chamberlain... | Answered on Oct 24, 2017


No need to - the unit has adjustments to control where the door stops on closing. You need to back off a tad on the closing setting so that the door stays closed.

Chamberlain... | Answered on Jul 05, 2017


have you changed the battery inside the remote yet?

Chamberlain... | Answered on Apr 26, 2017


Reset the travel distance setting on the back of the motor box

Chamberlain... | Answered on Sep 28, 2016


I know sometimes if the sun is shining towardso the sensor it will start to go up before hitting the floor but this soundshould like you may have a misaligned sensor or one of them going out but this doesn't explain why it hits the floor first so my answer to you is that the travel distance setting on the motor is not set right it thinks it's hitting something besides the floor the settings for the door travel distance should be on the back of the box that contains the motor I'm sure this is what is causing your problems

Chamberlain... | Answered on Sep 28, 2016


We had he same issue and changed our bulb from a CFC back to a traditional bulb and the problem was solved!

Chamberlain... | Answered on Jun 06, 2015


Please make sure you don't have broken springs first and that the door is balanced properly. If so you can replace the "Trolly" by disconnecting the arm from the opener, undoing the opener from the bracket that mounts it to the wall. This usually takes a 1/2 in wrench. Then swing the opener out far enough to slide the trolly off and replace it with a new one. Re-connect everything then re-engage the trolly.

Chamberlain... | Answered on Oct 07, 2014


Check the settings and door stops.

Chamberlain... | Answered on Jul 14, 2014


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.

Chamberlain... | Answered on Jun 26, 2014


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

Chamberlain... | Answered on May 08, 2014


Try adjusting the force of the opener. Instructions are on page 25 of the manual. http://www.liftmaster.com/CatalogResourcesV3/en-us/shared/files/tucmanuals/114A3059.pdf

Chamberlain... | Answered on Mar 02, 2014


take some toilet paper, or some very light rag and dust the RPM sensor over, under, inbetween and in every spot on that darn thing, and bingo, it will work. Its the plastic ribed piece mounted on the end of the motor under opener cover. If something gets under door as door starts to go down, the RPM`s will slow and thats a warning to stop and go back up. With it being dusty, it can`t sense the RPM`s properly and goes into an alarm every single time. Ugg

Chamberlain... | Answered on Dec 07, 2013

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