Craftsman 1/2 HP -Garage Door Problem

adilssMarch 1, 2008

I am having a strange problem with my Craftsman 1/2 HP garage door opener. When it is shady or dark it works just fine, both from the wall mounted control and my remotes. However if there is bright sunlight shining into the garage, the door will not close. It just moves a few inches and retracts. Only way to close it is by holding the button on the wall mounted unit till the door shuts completely.

I tried covering the sensors but that does not work.

Does anyone else have a similar problem. Is it normal for the sensors not to work in bright light ? Is there a cure ?

Any help would be appreciated.

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Hi adilss, kudos for you fo rstarting your own thread instead of piling on another!

That is why I am answering you. This is rare, but can happen, most of ten in winter. It seems the ambient light overwhelms the receiving eye and drowns out the signal from the sending eye.

Try taping a toilet paper roll cardboard around the recievr eye. Then make sure the "eyes" point right at each other, then see if it closes with the remote.

Or try closing the door by holding the wall button down, release trolley rope, and move the trolley back up to the up position, leave door closed, and try to move trolley down with a remote. if it works, teh probelm is overwhelemd receiver eye. Sheld it with carboard tube from tp or a small flat shield so sun doesnt hit the recvr eye, or swap receiver for sensor, or check very carefully for flickerign receiver yee with door closed.

Good luck

    Bookmark   March 1, 2008 at 10:02PM
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Hello TechDave,

Thanks a million ! The toilet roll did the trick ! I just tried it by holding the roll on the sensor (green) and it worked fine. The door closes even in bright sunlight.
I am just waiting for the weather to improve a bit to put in the permanent fix now. It is right now -5, so bit difficult to work with gloves on.
Which of the two sensors is the transmitter and receiver ? Is the green one the transmitter and yellow the receiver ?

Once again, thanks so much for your response and brilliant suggestion.

Best Wishes !

    Bookmark   March 2, 2008 at 12:26PM
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I am glad it worked out for you.

fortunately , the first time I saw this probelm a few years ago, business was slow so I had the time to fart around until I figured out what was going on.

The green i sthe receiver, if both were green like on older units,the one that dont go out when the beam is broekn is the sender.

Props to you for fixing it!

    Bookmark   March 2, 2008 at 10:38PM
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