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.
In some cases faulty springs or incorrect balance inhibit your liftmaster from opening the garage door all of the way.
If the door opens at least 5 feet you may need to increase your travel limits.
If you own a wall mount garage door opener like the liftmaster 8500 for example the first thing to check is the cable.
To test for balance open your door s emergency release handle and open and.
If your door isn t binding and its springs are in good working order you may be able to make.
On other garage door openers the learn button will flash 5 times every 10 seconds in addition to the door not opening all the way to indicate that an obstruction binding or a sticking door was detected.
Before you start troubleshooting the door you should do a preliminary check for broken springs.
How to fix a liftmaster garage door that won t open before you begin.
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