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Why my garage door can not colse several times per day?

We have a Sears Garage Door Opener, and during the mid afternoon the door will not respond to either the remotes or the door closer in the garage. It just starts blinking and retracts back to open.

I am sure that it is the sunlight that is causing the problem, but we have already tried some of the normal fixes for that problem. Here is what we have tried, with no luck:

1) Replacing the sensors
2) Realigning the sensors
3) Toilet Paper rolls around sensors (to block out sun)

Aside from replacing the whole system, I am not sure what else to try.

Anyone have any good suggestions to fix this problem?

Answer:

If your sensors are causing the problem you should still be able to close the door by holding the wall button down until the door hits the ground. Not the remotes though, they are designed not to do this. They warn of this sunlight problem on Chamberlain operators, but I have never seen one do this. Chamberlains’ tech support # is 1-800-528-6563. Your down safety reverse might be set too low. Adjust it according to the owners’ manual. Let me know what you find.