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

1 Answer

Sensors dont work .

One side is green other is amber, hence door will not open when pressed.

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Is that a problem? The way I read my User Manual the sending eye glows orange (amber?) and the receiving eye glows green.

Posted on Oct 12, 2008

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The unit is displaying a sequence of 5 flashes with the amber light. When I try to open the door, it will only go forward and backward aprrox. 1 ft. Any suggestions on what I should do?


Craftsmsman 1/2 HP opener indicator light blinks five times ...

? 0:29
https://www.youtube.com/watch?v=AvXJd-tYCJ0
Apr 28, 2012 - Uploaded by bship452
Then showing the amber indicator light blinking 5 five times, stops ... push remote to operate opener, you hear a clicking sound from the unit. ... Show more .... blink 5 times (looks almost alike) If I forced the garage door closed, ...Missing: sequence

Sears Garage door opener problem - Home Forums

ths.gardenweb.com > Home Forums > Garages/Workshops
Jun 27, 2006 - Now, I cannot get the light in the sensor at the door to come on. ... the green LED went OUT about 1/2 way up the door opening sequence. .... other is working (I don't recall if it's green or amber, but know that it is lit.) ... Their is also a green LEDflashing 2 times every 5 seconds or so at control center of unit.

Craftsman Garage Door Opener Problem - Home Forums



Jan 05, 2016 | Building Materials

2 Answers

How do you align the safety sensors for a lifmaster garage door


The indicator lights in both sending and receiving eyes with glow steady if wiring and alignment are correct.
http://waterheatertimer.org/pdf/Liftmaster-safety-reversing-system.pdf
Connect the wires together on safety sensor receiver (with green indicator light), so it by-passes safety system.
The safety system consists of sender with amber light, and receiver with green indicator. Receiver must receive light in order to keep switch circuit closed. If receiver receives no light from sender, then switch opens, and garage door will not function.
Connect both wires on receiver will simulate the closed switch, as if receiver is receiving beam of light.
You can order replacement sensors from amazon

May 28, 2013 | Electrical Supplies

1 Answer

My garage door will open just fine, but when I try to close it the light blinks 3-5 times and then I have to press to button and hold it until the door closes completely. what can be the issue?


Check the obstruction sensors and for anything blocking the doorway. If both sensors do not have the appropriate lights on, adjust them to get the beam across the doorway to the opposite sensor. (My units have amber and green lights on different sides. Both lights must be on.)

I hope this helps.

Cindy Wells
(we often get the sensors out of alignment when someone walks too close to the rail of the door. Weeds and bright sunshine can also interrupt the light beam.)

Jun 27, 2011 | liftmaster Garage Door 1/2 Hp

1 Answer

I have a Craftsman 1/2 HP Garage Door Opener, Model 139.18076 or thereabouts. One day the door went up and it didn't come back down without me detaching and closing it manually. The motor hums/clicks...


Check to see if the trolley is jammed against the bolt just in front of the motor housing. If it is, loosen the chain enough to take the stress off and then run the opener until the door closes. While the door is closed locate the 'down limit' on the side of the motor unit and turn this control 2 full turns in the opposite direction of the arrow printed on the cover. Tighten the chain.

Mar 30, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have the chamberlain garage door opener. the door will not shut. the door travels to about 8 inches above the floor and then reopens. the door is just over one year old and has worked well up...


The sensor colors are correct. Try wiping the little eye sensors that point at each other for one thing and make sure there isn't something protruding from door that's coming into the patty of electric sensors.

Mar 14, 2011 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Door will go down until it gets close to the sensors (transmitters) and then it hesitates and goes back up. One of the sensors has a constant green light which tells me that it works properly, but the...


The sensors have to see each other in order for the system to work. If the beam is interrupted, it will cause the door to go to the open position. It sounds like the sensors are out of alignment. When the door is closing, it moves a sensor slightly and this breaks the beam, door reverses and opens. Work the sensors so that they are both aimed perfectly at each other. I believe that the amber light will change to a different color when the sensors are aligned.

Jan 29, 2011 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Liftmaster formula 1 garage door opener keeps "bouncing" open


If the door reverses when it hits the floor it is traveling too far. Locate the 'down limit' control on the side of the motor unit and turn this in the opposite direction of the arrow printed on the cover. Some tweaking will most likely be necessary. You can always recognize a sensor problem because the main light will flash 10 times. If the main light isn't flashing it isn't a sensor problem.

Sep 26, 2009 | Sears Craftsman LiftMaster Chamberlain...

4 Answers

Garage door only works partly


some thing blocking sensor or laser is not in proper alinement

Feb 18, 2009 | Sears Craftsman LiftMaster Chamberlain...

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