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

1 Answer

Garage door opener.Working off and on. Green light blinking

Its an older '95 Craftsman opener. HBW077. It will work from the wall most of the time, but the remotes only sometimes. I have reset the remote codes several times. The ground sensors are inline. There is a green light that blinks rapidly on the back of the motor. It has worked great up to this point, but there is nothing in the manual about that blinking light which has to be signaling some kind of problem. Any help would be greatly appreciated.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Check the alignment of the safety light beams near the floor on each side of the door. They are not properly aimed and the safety reverse feature will not allow the door to close properly.

Posted on Mar 10, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

HBW077 Craftsman: door travels downward only 10"


Sounds like you have a bad RPM sensor board. This is a small printed circuit board just in front of the motor. It's job is to reverse the door when it hits an obstacle but will act as you describe when they go bad. The part number is 41C4398A and is available at Sears or any good door service company.

Dec 18, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Liftmaster HBW077. The opener operates from the wall mounted button. There are two remotes and neither will open the door. The green light on the WALL button is blinking. There is nothing that...


Check to see if the wall control has 3 buttons. If it does one of them is the lock button and you need to press and hold this for 3 seconds. The lock button has an icon of a padlock. If you do not have a 3 button wall control programming the remotes should cure it.

Dec 09, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The green light on the wall switch is blinking constantly yet it works to open/close the door. The remote does not work. Any suggestions?


Press and hold the lock button on the wall control for 3 seconds. The light will stop blinking and your remotes will work.

May 19, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Sears Garage door opener (139.53800SRT)was working and then just quit working. None of the remotes or wall switch work. When I press a switch I hear a few click in the opener and then nothing. ...


The code for 5 flashes is " Motor overheated or possible RPM sensor failure. Unplug to reset." Also if the door is stuck in the open position it could be the trolley is jammed against the bolt just in front of the motor unit.

Feb 07, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door don't open


On the wall control press and hold the button with the lock icon for 3 seconds. The blinking should stop and your remotes will once again work.

Sep 15, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage Door Remote Openers Stopped Working Suddenly


Check the wall control. If the small green light is blinking press and hold the button with the lock icon for 3 seconds.

Jun 01, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sear garage door wall mount contol light keeps blinking


Hold the button with the lock icon in for 3 seconds. This should toggle the unit off vacation mode and your remotes will work.

May 31, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage opener not responding with remotes, keyless pad, or wall console. Can hear it click but nothing happens. Green light in opener blinks 5 times. When i reset the green light stays on until i try to...


UNPLUG UNIT TO RESET.

IF IT STILL FLASHES 5 TIMES AND MOVES 6-8 INCHES REPLACE RPM SENSOR.

IF IT STILL FLASHES 5 TIMES AND DOESN'T MOVE REPLACE LOGIC BOARD.

Apr 17, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

The wall button has a green light that is blinking and the car remote will not operate the garage door but the wall button works


this just happened to us today as well. the wall pad has three buttons: one large back-lit button pad to open it and a lock button and a light button. the open button was blinking quickly and would open the door, but the car remotes did not work. I found that by pushing both the "lock" and "light" button at the same time for about 3 or 4 seconds, the back-lit "open" pad stopped blinking and went to steady green. I went back to the cars and checked the remotes there. both opened the door.

hope this helps someone out there

Mar 31, 2009 | Sears Craftsman LiftMaster Chamberlain...

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

585 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sears Garage Doors Experts

Al Clark

Level 2 Expert

290 Answers

Cindy Wells

Level 3 Expert

4761 Answers

Pieter Vleeshouwers

Level 3 Expert

1423 Answers

Are you a Sears Garage Door Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...