Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
I just installed the opener and when I close it, it reopens immediately. How do I fix this problem?
Check the sensitivity on the back of the powerhead. If it's too light the door will touch the ground and come right back up if it's too hard you could damage the door b/c it's going down with too much force. This is the amount of force that you want the door to hit before returning back to the up position if something is in the way, some people use a roll of paper towels to check this force. Hope this helps.
Posted on Apr 01, 2008
There will be adjustment knobs on the side of the unit. Usually two white knobs that you have to turn with a small flathead screwdriver. These are the limit / load adjustments.
These adjustments are VERY sensitive, so be patient!
Posted on Feb 11, 2008
a 6ya Repairman can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Repairman (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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