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

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Model 41a4315-7c remote won't open or close garage door. I have new batteries and will work with wall button

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  • 10,515 Answers

Hi,

There could be few reasons for the same.

# Remote control battery may be dead. Change battery and try again.
# Remote control may not be sending a signal. If more than one remote, check that both are working.
# Lock switch is ON. Check for a blinking light on the Multi-Function Control Panel. If so push lock button to turn OFF.
# Code remote control to receiver

http://www.bearcatco.com/helpgifs/maincode.html

If the problem still persists, then you need to contact the manufacturer at :-

http://www.liftmaster.com/consumerweb/service/contact/contactuslanding.htm

Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Posted on Nov 06, 2010

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Anytime a door opens and/or closes randomly or doesn’t work consistently I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.
Or a remote in someone’s purse that gets the button pushed by other stuff in the purse.

The test is to disconnect the push button wires at the power unit. If the self operation / interference stops you have located the problem. If you reconnect the wires and disconnect the wire at the wall button this will tell you if the problem is the wire or the button.

In your case the expansion of the wall in the afternoon may be enough to cause pressure on the wire to increase the problem – works in the morning but not the afternoon.

Also after you change the batteries you need to reprogram the remotes.

HOPE THIS HELPS

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