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

1 Answer

My chamberlain wisper drive plus does not hold memory

After adjusted up and down and force, try and works fine, two hours later press open and door open up to the right position, then press down the door will push all the way to the ground hard and goes all up and stop with 5 blinks. adjust again, tested fine but two hours later happen again. Seems like it doesn't have long time memory. please help.

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  • 22 Answers

Call chamberlain on there 800 number a tec will discuss the problem with you.
You can reach our friendly and knowledgeable technical support staff by calling1-800-528-5880

Posted on May 10, 2014

6 Suggested Answers

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  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Chamberlain Liftmaster Professional 1/2 HP

Okay...upon further inspection, my left spring has broken in two. Going to call around for some quotes to replace the spring. Thanks for the suggestions.

Posted on Jul 25, 2008

  • 1 Answer

SOURCE: Craftsman 1/2 hp door opener

My problem is similar, but it seems to occur only at temps near or below 40 degrees. I have to hold the wall mounted control to force it to close as the remotes do not work on closing but only opening.

Posted on Oct 30, 2008

dragonsthatk
  • 547 Answers

SOURCE: Garage door only works partly

some thing blocking sensor or laser is not in proper alinement

Posted on Feb 18, 2009

  • 3197 Answers

SOURCE: liftmaster pro 1/2 hp wont shut in one button press

You have a door sensor problem. Either your main light bulb is burned out or you don't have one in your opener. The clicking sound you hear is the relay for the light. Both of the door sensors should have a small light that is lit. Tweak them until they are.

Posted on Jun 29, 2009

  • 3197 Answers

SOURCE: Garage Door Goes down 5 inches and then up 5 inches.

Okay here we go.

Make sure you put the black cup back on the end of the motor shaft and that it is pressed all the way on. Make sure the RPM sensor is plugged in. If neither of these is the issue, then you probably did not have the motor shaft pushed all the way back when you tightened the coupler after replacing the worm gear. Loosen that coupler up and from the front of the motor (opposite end in which the coupler is on) push the shaft back as far as it will go. Hold it there while you tighten the coupler back up and then give it a try.

Posted on Jul 06, 2009

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1 Answer

Door closes all the way but then opens again


you can try adjusting the down force. what it sounds like when the hits the bottom the force sensor is saying there is an obstruction and is opening back up . just turn the down force adjustment higher on the logic board. if this isn't the problem you may have to adjust the down travel control, it maybe trying to force the door down to far and causing the force sensor to open door back up. if it is trying to force door to far in travel when the door goes down when it hit bottom you will notice the chain sag or the t bar will bend. good luck.

Sep 24, 2011 | Chamberlain Liftmaster Sears Or...

1 Answer

I have a 1/2 HP Liftmaster Chamberlain Garage Door Openner that will neither open nor close now. I have disconnected the door from the carrier. With the carrier up, I press the button and it goes down...


1. Lubricate the chain and the shaft or angle iron that the carrier rides on.
2. If that doesn't work, see if the opener has adjustment screws for up force and down force. If so, try increase the down force about half a turn at a time.
Write back with your results.
Gary

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

1 Answer

The opener seems to want to continue closing the door once it hits the ground. Seems like the closing mechanism needs to be adjusted back closer the the garage door closer unit. This did not just...


Try to re-program travel and force limits. Make sure that travel limit (down) does not go too far (thus excessive force). Apparently this system has a force sensor that senses if there is something in the way of the door. This is different from the safety sensor "eyes". The problem in your setup is that you have programmed the door to travel down too much and he system looses its ability to use force sensor. Adjust travel limit (down) to a little less travel and you will be fine.

Jun 18, 2010 | Chamberlain 1/2-HP Whisper Drive Belt...

1 Answer

Hi there. I have a Chamberlain Whisper Drive


I just had that problem this morning and the cause was that the springs that help hold the weight of the garage door were broken. This caused the garage door opener to raise the garage door a fe inches and then drop again. We called in a professional and $200 later we had new springs and everything works fine now.

Nov 07, 2009 | Chamberlain 1/2-HP Whisper Drive Belt...

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Where are the up force and down force button located on a chamberlain whisper drive plus


They are on the back of the motor unit. You may have to remove a light lens to find them. Just follow all those white wires and they will lead you to them. One caution I want to make is adjusting the down force. This will directly affect the safety of the opener. Use only enough force so that the door closes consistently.

Aug 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garrage door opener won't open all the way and sometimes it won't close also


If the door runs fine then check the up force and down force on your operator (the box that hangs from the ceiling). If the light(s) on your operator go from front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up/down arrow to a higher number.

Jan 02, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

When cold outside, door only opens a few inches


1.Check to see if the door is running correctly. 
  A. Run the door down and pull the emergency release. See if the door will run easily by itself. 

  1. If it runs hard by hand try lubricating the rollers and hinges with silicone spray or some form of lubricant (not WD 40) 

  2. If the door is heavy and falls back to the ground, you probably have a spring issue (either broken or needs more tension) in this case call a professional door repair company in your area.

  B. If the door runs fine then check the up force on your operator (the box that hangs from the ceiling and reads Craftsman). If the light(s) on your operator go from front and/or back, the force adjustment screw is on the back of the operator. If the lights are on the sides of the operator then the force adjustment screw is on the right side (looking from the back of the operator and facing the garage door). Turn the light blue adjustment screw with the up arrow to a higher number.

Dec 05, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Chamberlain garage door opener not working properly


Turn up the force adjustment or the bottom part of the door could be getting in the way of the photo eyes.

Sep 05, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

1 Answer

Door ups and downs


Holding the button down just bypasses the sensors.
Your sensors are not adjusting correctly, or there is a short in the wires.
The back of the machine has a little yellow light, count the flashes and corelate it to the troubleshooting portion of the manual to confirm.

The orange light is a constant, the green sensor needs to be adjusted until you get a solid green light.

Apr 30, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

2 Answers

Craftsman 1/2 hp door opener


replace the logic board
http://www.chamberlain-garage-door-openers.com/circuitboardcompatibilitychart.htm

Dec 16, 2007 | Sears Craftsman LiftMaster Chamberlain...

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