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

1 Answer

Garage door doesn't close properly

The garage door starts to close but then backs off as if the sensor is tripped. This consistently happens every time the door closes at a certain point (approximately 1 foot from the bottom and no there is nothing protruding from the door that is tripping the sensor). This inconsistently happens at various other points along the path.

the sensors are clean. I cannot tell if they are pointed directly at one another, but they are very firmly in place. This problem just started happening recently. Opener is about 9 years old now. My Sears Craftsman door stops right above the sensors and reverses back up every time I try to close it. It will not go all the way down even when the button is held down to by-pass the sensors. We've tried adjustng the pressure and the travel distance. The door slides smoothly on the track when opened and closed manually. Before this started it was going down all the way and then reversing. We could stop it in place by pushing the remote button again. Any other ideas for us to try?

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 31 Answers

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.

Posted on May 16, 2009

1 Suggested Answer

  • 2 Answers

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

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.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Seceuroglide garage door

No doubt you have a rambling controller that changes the codes quite often. That protection prevents other from opening the door when you are away. It sounds like your hand controller needs a new battery, or a neighbor used their device that just happened to trip your sensor. Call the manufacturer and get assistance, have them run you through the process of readjustment.

Feb 26, 2014 | Building Materials

3 Answers

The garage Remote control was working normally at first then for now reason now it just opens the garage door but doesn't close it. I checked the side sensors they look OK & clear, and I...

It could be the garage door motor that is acting up. Try closing it with the button in the garage. If that's not the case, you may need a different garage door opener.

Jun 06, 2011 | liftmaster Garage Door 1/2 Hp

1 Answer

Last night, I went to close my garage door and as it started to close (door moved about a foot), it reversed directions and opened. I suspected a cat might have ran in and tripped the safety sensor, but,...

On the rear of the motor unit near where all those white wires go you will find a small light. Check to see if it is flashing a code. It will flash a number of times then pause and then repeat. This will help diagnose the problem. Also make sure the trolley hasn't traveled too far and jammed against the bolt just in front of the motor unit. Post back.

May 25, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

When you push either the remote or the switch at the door, the garage door will go down almost to the bottom and then come back up and the light will blink several times. This does not happen all the time....

Your safety reversing sensors must be connected and aligned correctly before the garage door opener will close. An obstruction in the path of the sensor will also cause your door to not close.
This sensor is an electronic beam, which is sent between two sending and receiving “eyes”. These eyes face each other and are located just inside your garage door. They may need to be adjusted so the beam from the sending eye is properly detected by the receiving eye. Once the receiving eye “sees” the beam from the sending eye, a green indicator light will glow on the top of the eye.

Jan 03, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman garage door opener trips the GFCI

When garage doors get sticky, bent, and the chain needs lube they will trip the controls. A door may suddenly reverse for no apparent reason, that is friction. A GFCI is real sensitive to load. Also check the wiring to the unit. Any bad connection will upset the GFCI. Check all the way back to the breaker box, sometimes the screws on the wires need to be tightened.

Apr 28, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Chamberlain Whisper garage door system that only closes 3/4...

One sensor should always be yellow, the other should be SOLID green.
If the lights are not consistently SOLID, you have a sensor issue.
TEST: If the door closes completely by pressing and holding down the wall pad button, you have a sensor problem.

Check to make sure the are aimed properly at each other.
Check the wire at the sensor and more importantly at the machine (If the wires are loose at the machine (terminals) it can cause this problem. Remember the machine does shake a lot.
If the wires are good, the sensors are aimed correctly, you have a sensor issue and need to loacte a replacement set.

Feb 17, 2009 | Chamberlain Powerdrive PD422D 1/2 HP...

2 Answers

Craftsman 1/2 HP door opener bounces back open


There should be 2 sensors on the bottom of your door on the inside, 1 on the right side and 1 on the left side.
These sensors serve 1 purpose to send a beam or reflection to each other.
If something is blocking this reflection or is in front of the sensor the door will always come back up.
It is a safety feature so nothing or no one gets hurt when the door is closing!

Sep 22, 2008 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

Garage door doesn't close properly

I just had this problem and I cleaned the sensors and made sure all the lights on the sensors were on. They were but yet the propblem persisted.

I checked all the wires and found that the wires were touching where they went into the unit. I separated them and all is working fine now.

Dec 27, 2007 | Sears Craftsman LiftMaster Chamberlain...

4 Answers

Garage Door doesn't close

I have this same problem periodically. I fix it by manually closing the door and then letting the truck re-engage the door and everything is fine......unitl next time.

Sep 18, 2007 | Sears Craftsman LiftMaster Chamberlain...

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

292 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Building Materials Experts


Level 3 Expert

4336 Answers

Cindy Wells

Level 3 Expert

5099 Answers

Brad Brown

Level 3 Expert

15557 Answers

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

Answer questions

Manuals & User Guides