Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+

1 Answer

Open and closing problems w/ garage door

My door will close completely & the reopen about 5 inches or more. When I try to open the door it takes several times pushing the button, but the door still has to me in motion or it wont work at all. So It's consatnly up down up down til it finally goes up. Also I know it sounds crazy but the colder it gets the worse it is

Posted by on

  • Mayer overhead door co.

    your first problem is an adjustment to the down door travel limit ,that needs to be adjusted manually ,by you ,then you have a pressure sensitivity issue ,that also should be adjusted , please let me know what brand you have and i can help you ,different machines have different adjustment controls ,I need to know the name brand / your machine sounds like an older model because the remote sensitivity is worn out also ! please let me know Sincerely Glenn

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 112 Answers

First adjust the down limit setting. There is two white screws on the side of the opener. The one that says down needs to be turned to the less side. One full revolution of screw adjusts approx. two inches. Turn it down until the door does not close all of the way and the slightly turn it up until the door closes all of the way with stight pressure on the door. Next there are two blue screws on the back of the opener. they should be on the five setting on both the up and down screws.

Posted on Mar 05, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Garage door closes most of the way, then blinks and reopens


You can adjust the downward sensitivity by turning an adjustment on the opener

Nov 28, 2013 | Home Security

1 Answer

My Lift Master Formula 1 is not closing all the time. It will close about 1~2 feet the reverse and reopen. This happens using the remote and the manual button. Also, after it reopens the light blinks...


I recommend this to everyone with garage door opener problems:

Use the pull cord and disconnect the opener from the door. Operate the opener and let the carrier slide back away from the door. Is the carrier moving smoothly when disconnected? Next, lift the door by hand from the bottom to the top. Is it moving smoothly? If not, lubricate the hubs of all the rollers on both sides of the door. Check the cable pulleys at the top sides of the door channel, lubricate them as well. Are all cables in all the pulleys, there are 4.

Gary

Dec 10, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Two identical Sears doors jump about 6 to 8 inches up when opener button pressed. Periodically doors will stop at that point, need to be closed and then reopened to operate properly. Have tried adjusting...


It sounds like the door springs may be mis-adjusted. Release the doors from the opener and try raising and lowering them manually. They should not try to rise on their own.

Jul 30, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Problem with Sears Garage Door Opener


The motors is cought on something check the motor if it moves inches it will move a yard the question is the motor is it getting power? if so is it stuck on its own drive chain? Check these things you be glad you did.

May 25, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door closes then reopens (does not stay shut)


On the side of your opener you will find the down limit control. Using a small screwdriver turn this control in the opposite direction of the arrow printed on the cover. May take some tweaking to get it just right.

Mar 22, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The door reopen by itself once its closed.moment later it reopen by itself it is very unreliable.


IF IT GOES BACK UP WITHIN 5 SECONDS OF CLOSING IT IS THE DOWN LIMIT.

IF MORE THAN 30 SECONDS SEE BELOW.

Anytime a door opens and/or closes by itself 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.

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 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.

HOPE THIS HELPS

Feb 22, 2009 | Skylink Group SkyLink GT-100 Garage One...

1 Answer

Opener will not reverse


FIRST YOU NEED TO RESET THE CHAIN .

Unplug power
Release the door from the opener close the door manually. take the chain loose and slide the traveler down to reengage with the trolley. Plug in power, run the unit with chain off untill it completes a clockwise cycle and stops. reconnect the chain and set tension.

Adjust the chain tension.

If it still moves 6-8 inches and flashes 5 times. the problem is in the rpm sensor.

Full diagnostics are in the owners manual - FREE at
http://help.chamberlain.com/help/en-us/InstructionManuals

Oct 06, 2008 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo

186 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts

Mike

Level 3 Expert

4332 Answers

Cindy Wells

Level 3 Expert

4888 Answers

Brad Brown

Level 3 Expert

14749 Answers

Are you a Sears Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...