Garage door support? i have a liftmaster chamberlain 1245r and it keep opening and closing...

i have a liftmaster chamberlain 1245r and it keep opening and closing it self

could it be that my sensors are broken and involve to be replace? or does it have something to do beside the frequency
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Answers:    Your sensors are not lined up right. One may hold been bumped by someone.
Move your sensor around where on earth it looks like it is hitting the other side.
I enjoy not known these sensors to travel bad but I do not work on them adjectives the time.
When I put a 3-way restrained bulb surrounded...
There maybe dust or dirt that have to be cleaned from the sensor or something in the instrument of the sensor sending the door back up. We hold had this take place from time to time. We usually just check to see if they have need of to be wiped bad and then the door works fine again.