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

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Garage door sensors

I need to re-wire safety sensors on my liftmaster garage door. Opener has 3 places 1,2,3. In which slots do the sensors wire to?

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#2 and 3 on my opener. #1 and 2 are atteched to the wall button. So # 2 has both attached. Hope that helps.

Posted on Aug 24, 2008

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After a power outage, my remotes don't work. The keypad and button inside the garage work fine. I took. The batteries out for 30 seconds and unplugged the receiver too. What do I need to do?


[PDF]GARAGE DOOR OPENER Model 3265 1/2 HP ... - LiftMaster

www.liftmaster.com/.../en.../tucmanuals/114A3044.pdf Chamberlain GroupThe Chamberlain Group, Inc. 845 Larch Avenue. Elmhurst ... Please read this manualand the enclosed safety materials carefully! ? Fasten the manual near the ...

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HBW0777 Liftmaster garage door opener will not close unless wall button is held down. Weirdly enough it only does this in early fall to early spring for last 3 years. What can I do to fix it?


Have the wiring checked out for proper voltage and ground, when it is acting up. The seasonal change may affect the ground rod, it may not be well grounded.

Nov 26, 2013 | liftmaster Garage Door 1/2 Hp

1 Answer

Liftmaster Chamberlain Garage Door Opener Transmitter 300MC: I'm tryin to connect the sensors on my garage open...


IF YOU HAVE THREE SCREWS THE WALL BUTTON GOES TO 1 AND 2

THE EYES
THE WHITE WIRES W/BLACK LINE GOES TO 3
THE PLAIN WHITE WIRES GO TO 2

IF YOU HAVE SLIDE IN QUICK CONNECT THE WALL BUTTON GOES WHITE WITH RED TRACE TO RED.
THE SAFETY EYES WHITE WITH BLACK TRACE GOES TO GRAY PLAIN WHITE GOES TO WHITE

HOPE THIS HELPS

May 18, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+: i'm reinstalling my garage door opener because the...


Terminal #1 - White wire with red tracer from wall control

Terminal #2 - Three solid white wires. One from wall control and one from each of the door sensors.

Terminal #3 - Two white wires with black tracer from the door sensors.

May 17, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Liftmaster Chamberlain Garage Door Opener Transmitter 300MC: Light keeps on flashing on the motor...


how many flashes
1-safety sensor wire broken
2-safety senor wire shorted or reversed
3-door control or wire short
4-safety sensors mis aligned
5-motor overheated or bad RPM sensor
6-circut failure, bad logic board

May 17, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

I need to know the order to connect the wires


The solid white wire from each sensor goes to terminal #2 and the white wires with the black tracer go to terminal #3.

If the wall control is also connected you should end up with one white/red wire on terminal #1, 3 white wires on terminal #2 and 2 white/black wires on terminal #3.

Apr 30, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Trying find where the wired for button and sensors go on liftmaster door opener


The wire with the red stripe goes to terminal #1. There are 3 solid white wires that go to terminal #2 and the 2 wires with the black stripe go to terminal #3.

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

2 Answers

Basic wiring for craftman garage door opener


from left to right..
1. red. to wall button
2. white . common to wall button and white wires of sensor.
3. black. white with black strip of sensors

Jul 08, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Wiring chamberlain 1/2 h.p. security+


2 is the shared nuetral for the photo eyes and the wall button. 1 and 2 are for the wall button and 2 and 3 are for the safety sensors. All devices are polarized so keep that in mind. Thanks BB

May 07, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Wiring the opener and sensors


The wall button gets the red and white wire. The safety eyes use the black and white wires. There are two types of attachments on the back of the openers. One has three screws. On this type the 1 is for the red wire, the 2 is for all white wires, and the 3 is for all black wires. The other type has four blocks and you just match the color to the wire color.

Jan 29, 2008 | Sears Craftsman LiftMaster Chamberlain...

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