Sears Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+ Logo
Posted on Jan 06, 2009
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GARAGE DOOR OPENS BUT WILL NOT CLOSE AUTOMATICALLY

GARAGE DOOR OPENS AUTOMATICALLY BUT TO CLOSE, WALL UNIT BUTTON MUST BE HELD DOWN UNTIL DOOR TOUCHES FLOOR, OTHERWISE DOOR WILL MOVE DOWN ABOUT 6 TO 12 INCHES AND THEN REVERSE ITSELF. THIS IS ALSO THE CASE WITH THE DOOR DISCONNECTED FROM THE SLIDER ON THE RAIL. SENSORS ARE ALIGNED AND GREEN LIGHT IS ON. SENSORS REACT PROPERLY WHEN BEAM IS BROKEN. NO OBSTRUCTIONS FOUND ON RAIL OR DOOR TRACKS. OPENER IS CRAFTSMAN 1/2 HP CHAIN DRIVE. MODEL # 139.53975SRT1

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  • f_stella Jan 15, 2009

    Yes, bulb on motor is flashing 10 times. I have looked closely at sensors and one has sustained some external damage, so I will try replacing it and follow up on results. Thank You !!!!

  • Anonymous Jan 16, 2009

    I have this problem however the sensors are working green light is on. Any suggestions

  • f_stella Feb 12, 2009

    Sorry for the delay in responding to all the helpful suggestions. Because of the bulb flashing 10 times, I replaced both sensors(even though the green light was working properly) and it did fix the problem. Thank You to all for the help. I really appreciate it !!!

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  • Posted on Jan 15, 2009
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Is bulb on motor flashing 10 times. then you have electric eye problem. otherwise, sounds like you need to increase down force a hair. adjustement is on logic board, right knob.

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  • Posted on Jan 17, 2009
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Ihad the same problem, and fixed. it is very likely the infrared eye that is a safety protection.either the wire is loose or something is blocking one of the electric eyes located on either side of the garage door near floor (on each side)

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

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