Check if the safety sensor is connected to the opener properly aligned and there is nothing in the way of the door.
Liftmaster garage door not opening all the way.
Before you start troubleshooting the door you should do a preliminary check for broken springs.
Contractor series wi fi garage door opener owner s manual for belt drive 8155w and chain drive 8160w 8160wb 8164w and 8065w my garage door won t open all the way chamberlain and liftmaster replacement products guide english.
If the door is in good working order but still will not open all the way increase the up force.
If the door opens at least 5 feet you may need to increase your travel limits.
If your door isn t binding and its springs are in good working order you may be able to make.
The garage door opens but won t close.
To test the balance and alignment of your door go to how to test the balance of a garage door.
In some cases faulty springs or incorrect balance inhibit your liftmaster from opening the garage door all of the way.
How to fix a liftmaster garage door that won t open before you begin.