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My garage door opener will start to close then stop and go back to the open position. If I put pressure on the door as it is closing sometimes it will close all the way and sometimes it will return to the open position. Can you help me. Thanks


Answers :

Sounds like the pressure sensor is being tripped - this is a safety feature on most makes in the last 10 years.

Find the make/model of your device and it probably has some knobs on the main unit to adjust.

For example, on the Chamberlain Power Drive 3/4 HP Chain Drive Garage Access System model PD752D:
http://www.chamberlain-diy.com/doityourself/pdfdocs/114A3060.pdf
Section on "Adjustment", "Adjust the Force", page 28
Try cleaning the door tracks and rollers as if they are sticking the motor will reverse as a safety function. Use WD40 and wipe clean then apply some spray grease.
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