SOURCE: Lift-Master garage door opener Model 1045-6 1/3 hp
There is a thermal cut out in the motor, usually the motor must cool before the opener will operate again. If the opener only operates 3 times it must be heating up too quickly.
First you opener is only made to do your job for you, which is opening and closing the door. If the door does not operate properly manually the opener will not operate properly.
When the door is disconnected from the opener it should lift easilly, it should basically stay at whatever point you let go of it (midway and fully open) and it should close without slamming down. It does not matter what size the door is!!! If it does not something is wrong with your springs and the door can be VERY DANGEROUS!!
With that being said it sounds more like a static lock-up possibly a loose ground or even a circuit problem in the home.
Bryan
SOURCE: Remote does not open garage door
It sounds like the wall button has the lock feature engauged.
Is there a small green LED flashing inside the wall button?
Push and hold the lock button for about two seconds and the LED should stop flashing. This will unlock the garage door opener and your remotes should start working. You may have to reprogram your remotes and homelink again since you triedprograming in the lock mode.
Good luck.
SOURCE: The wall button has a green light that is blinking
this just happened to us today as well. the wall pad has three buttons: one large back-lit button pad to open it and a lock button and a light button. the open button was blinking quickly and would open the door, but the car remotes did not work. I found that by pushing both the "lock" and "light" button at the same time for about 3 or 4 seconds, the back-lit "open" pad stopped blinking and went to steady green. I went back to the cars and checked the remotes there. both opened the door.
hope this helps someone out there
SOURCE: Sear garage door wall mount contol light keeps blinking
Hold the button with the lock icon in for 3 seconds. This should toggle the unit off vacation mode and your remotes will work.
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