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

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Can't get my Craftsman Garage Door 139.18190 remote to sync properly with motor. The light flashes on the motor like it is receiving the signal when I push the button on the remoter but the motor does not kick on.

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If it is the right remote for your opener try programming like this. Press and hold the button on the and then press and release the smart/learn button. If this doesn't work you have a bad remote.

Posted on Aug 28, 2010

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Posted on Jan 02, 2017

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What does the purple button light flashing on 1/2 horsepower craftsman garage door opener


I think the adjustment mode is on.

For example, that's from Craftsman manual:

""
Setting the Force
The force setting button is located on the left panel of the motor unit. The force setting measures the amount of force required to open and close the door.
1. Locate the purple button on the left panel of the motor unit (Figure 1).
2. Push the purple button twice to enter the opener into Force Adjustment Mode (Figure 2). The LED (Indicator Light) will flash quickly.
3. Push the remote control or control console (Figure 3). The door will travel to the DOWN (close) position.

""

Actually, you should just read carefully your garage door opener unit's manual.

Craftsman Garage Door Opener Remote

Jun 21, 2014 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Craftsman 13953919 door opener. My garage door opens during the day when I am not home. The alarm company calls me to let me know, and the police have been by twice. Nothing is stolen, so I can...


Here are some things to check.

Look at the LED light next to the SMART/LEARN button on rear of the motor unit. You may need to remove a light lens cover in order to see it. If the light is flashing rapidly this means you have a stuck button on one of your remote controls. Take the batteries out of each remote control. When you remove the batteries from the bad remote, the light will stop flashing. This remote needs to be replaced.


If one of your neighbors remote controls is inadvertently programmed into your receiver, you door will open when their remote is activated. If this happens you will need to clear out your receiver and reprogram your remote controls. Press and hold the smart/learn button for 6 seconds or until you see the small LED light near the button turn itself off. If the above steps have been followed and the symptoms continue, there may be an electronic short in either the wall control button or the receiver logic board. In this case, remove the wall control wires from terminals 1 and 2 on the motor unit. Should the symptoms persist after the wires are removed, replace the receiver logic board. If the symptoms stop with the wall control wires removed from the motor unit, replace the wall control button, and the wires leading to the wall control button.



Apr 14, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears 1/2 horsepower chain drive garage door opener (circa 1993) would not open with remote and light on back of opener is flashing quickly. Tried reprogramming the remote, but had no success and the green...


It sounds like you have a remote with the button pressed or broken so that it is on all the time. Remove the batteries from your remotes and check that light. The rapid flashing is an indication that it is receiving a signal. Make sure you don't have an old remote in a drawer somewhere.

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

1 Answer

When i push remote control, the green light flashes on the back of the unit, but garage door doesn't open.


The flashing LED shows that it is receiving the radio signal but the code may need to be set. Try programming the unit and see if that works for you.

Jul 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Craftsman 1/2 HP model #13953975SRT1.


It is normal for it to blink randomly. If you watch it while you press your remote you will see what it looks like when it is receiving a properly coded signal.

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

1 Answer

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


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.

Mar 10, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door opener motor doesn't work.


2 flashes is a safety eye issue, but you problen is most likely that the chain is not sync with the limit setting. Take the bottom off the gear and sprocket assemble and rotate center limit srew until it is in the same position as the trolley.

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

1 Answer

Garage Master 1/3 HP 1997 Door Working, not responding to Remote


I have the exact same situation, except my model (139.53607) is older than yours and does not even have an LED. Remotes only works after after shop light goes off (5 minutes or so), but wall button works fine. Did call Sears Service and the tech told me the logic board is probably shot. Don't want to waste money on service call so I'll probably have to buy a completely new unit in the Spring and go through the winter without the use of a remote.

Jan 24, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door only opens with wall unit


a component in the wall unit is failing , that makes the conection happen when the remote signal is recieved , ( it is recieving the remote signal but not sending it out to the control circuit for the motor )

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

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