Question about Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+
When i try to close the doors it keeps on trying to open them I have a similar problem and have not been able to resolve it. When I close the door, it goes down all the way then a second or two later it goes back up again. There are no obstructions underneath the door to cause this. Any solutions?
Check the laser. Make sure that the safety lasers are properly alligned, If the bottom sensors next to the floor on the door rails sounds like it has been moved and just needs to be realigned. Pretty simple work to take care of the problem unless the sensor is broken
Posted on Apr 13, 2009
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Posted on Jan 02, 2017
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