If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
How to fix a belt drive garage door opener.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
A belt drive garage door opener is one of the 3 types of door openers available to home owners the other two the chain driven and the screw drive openers have their own specific uses and application.
Since the garage door one of the largest moving parts in your home and an entry point for your home you want to feel confident that everything is going to work the way it should.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
Once you have the belt fully disassembled you can inspect the belt for repair.
Step 7 check for repair.
Garage door opener won t open all the way fix.
You may have to fully remove the traveler slider from the unit to get the belt free depending on your model of garage door opener.