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

1 Answer

Chamberlain 1/2hp won't open/close and learn LED flashes 5 times

My Chamerlain 1/2hp opener won't open or close, and the motor hums for a few seconds when I try to activate it. It actually sounds as if the motor tries to move in one direction then the other before it stops. Also, the LED light next to the transmitter button flashes 5 times, pauses for three seconds, then repeats the 5-flash cycle. Any ideas?

Posted by on

  • 1 more comment 
  • hankonthego Jan 03, 2009

    I have same problem and my traveller is all the way against the bolt...

    scott

  • dbaum25 Jan 04, 2009

    We are having the same exact problem w/ the same device however our traveler is not jammed against the bolt...motor sounds but no movement at all - tried unplugging operator for 2 minutes with no solution...

  • Joseph Chapman
    Joseph Chapman May 11, 2010

    Where is the traveler? Is it all the way to the powerhead jammed against the bolt?


×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Vice President:

    An expert whose answer gotĀ voted for 100 times.

    Sniper:

    An expert who has posted more than 50 answers, of which 90% or more were rated as helpful.

  • Expert
  • 98 Answers

The gear needs to be changed kit #41c4220a. Be sure to change the bottom bushing on the motor mount.

Posted on Jan 04, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Liftmaster 1245 led blinks five time but door will not open


5 flashes of the LED is the code for "RPM sensor or motor overload." You can try unplugging the opener for about 15 minutes to see if it resets itself. Normally if it is the RPM sensor the motor will run for a few seconds and then turn off. Is the door not opening or not closing? Just checking to make sure.

Nov 09, 2011 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

I have a Chamberlain Whisper Drive and it started beeping. Reading the manual, it seemed that I needed to replace the battery. It is about 5 years old. Replaced the battery and the LED is no longer red but...


On the back of the garage door opener there is a red button. Depress this button and sync your keypad to the opener. This will re-establish the code and reset the remote.

May 27, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Sears Craftman 1/2 HP Garage Door Opener and on the back of the opener device, there is a re-set button. Above that button is a yellow light that flashes 5 times. I assume this is a code that is...


That is not a reset button it is the smart/learn button and is used to program remotes. If you mess with that button you can erase the memory and none of your remotes will work.

The code you are seeing with the 5 flashes of that small LED is "RPM sensor or motor overload". Your RPM sensor could be going bad but you should try increasing the down force first. The down force is a control in the same area as the smart/learn button. Increase this a bit.

Apr 21, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door opens fine but will not close unless I press down the button on the wall. The sensor lights are solid and I unplugged it for a minute and I'm still having the same problem.


If your main light flashes 10 times and the door reverses to the open position when you use your remote it is a door sensor problem. It is sometimes very hard to see if one of the sensor lights is flickering.

If the main light does not flash then you can try increasing the down force just a little. This control is on the rear of the motor unit near where all those white wires go.

Check the small LED near the smart/learn button. If it is flashing a code of 5 blinks then a pause and 5 blinks it is the RPM sensor. This is a small printed circuit board just in front of the motor.

Jan 25, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Craftsman GDO don't not respond other than a click noise when remote or wall unit is pressed. When power is removed, then restored, wall switch is pressed, unit clicks, then green LED on back of unit...


The unit is flashing the code for 'motor overheated or RPM sensor failure'. If the door is stuck in the open position it could be because the trolley is jammed against the bolt just in front of the motor unit. Remove the bolt and run the opener until the door is closed. Now on the side of the motor unit you will find the 'up limit' adjustment. Turn this 2 full turns in the opposite direction of the arrow printed on the cover. Be sure to replace the bolt.

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

1 Answer

I have the same problem.The garage door opens or closes on its self after setting up the new remote chamberlain. i foun out every time my nabour closes his garage door mine opens.


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.

Oct 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

4 Answers

Chamberlain 1/2 HP door opener will not work (102 1499A))


sounds like the clutch in the motor is slipping, perhaps the chain is getting kinked on something. check to make sure there is nothing in the way of it and that it is on track going into the motor

Jun 22, 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

334 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

4759 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...