How to solve this problem?
1. Switch off the power, and open the door by hands
2. Make sure do not have garbage in the rail. If have remove it.
3. Confirm whether it is in contact with the track due to dampers broken or loose stop. If so, please install it correctly.
Automatic door become popular in modern city, even in private home. People are more likely to use automatic doors. but some times the automatic doors will not working smothly. Today we will introduce one of the problems: There is too much resistance to running the door leaf.