Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
This only happens when the temperature drops. During the summer months never had an issue. This happened last year during the same time period
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.
Posted on Jan 01, 2009
On the back of the door opener unit, where the motor is, there are some adjustment screws. One is for down force, another for up. you should be able to adjust these to overcome the problem, which is caused by cold grease offering too much mechanical resistance to the motor's sensor (which is normally meant to keep the door from crushing someone caught under it).
Posted on Oct 17, 2010
During the summer , we leave the garage door open about 6" to vent the garage-since having a new spring installed , we cannot do this as the garage door literally falls all the way shut,
Posted on Jun 12, 2009
Possible interim solution. Or dumb luck. I just finished posting an I-have-same-problem statement on this site. Problem being: GD won't close when temp dips below approx. 40 degrees F. (Garage is not attached to the house.) This has been plaguing us for two years. My wife suggested using her hair drye on the drive unit; you know, the box where all the guts are located. Outdoor temp is 37 F. here in Eastpointe, MI. I directed the heat from her hair dryer all around the box -- back, front, sides, bottom -- for maybe three minutes. I was disapppointed when the door still would not close immediately afterward when I pushed the button on the remote. However, a few minutes later, after I got in the house, I pressed the button again and the door closed.
Posted on Nov 30, 2008
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Posted on Jan 02, 2017
Tips for a great answer:
Hello Donna F - Typically freezers are not recommended to be located outside because if the garage temperature is above 100 degrees, it will have difficulties performing optimally due to un-circulating air. Some manufacturers have garage kit design to help with this issue. It is design to solely be used during the winter to provide heat to the coils which trigger the compressor to come on. During the summer months, generally it is not needed.
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