When you see you garage door opener lights flashing and the garage door will not close it could be the lock button or the safety reversing sensors.
Garage door will not close light on.
There are a few things which can cause this.
This is of course a safety feature to prevent the heavy garage door crushing anyone or anything that might be in the pathway of the door when it comes down.
Garage doors sometimes seem to have a mind of their own often deciding when and how far they want to open or close.
If necessary you can close the garage door by pressing and holding the door control push bar until down travel is completed.
Sometimes the fix can be as simple as replacing the batteries in the opener.
Garage door won t close light flashes.
Start by checking if.
To prevent the garage door from injuring someone in the door or damaging an item in the way of the door all models of liftmaster garage door openers come installed with a safety sensor.
Garage door light flashing but won t close.
With the diagnostic feature on craftsman you can know what exactly the issue is.
If anything interrupts this beam of light the garage door will not close and the ceiling light on the opener mechanism will flash as mentioned in the previous step.