Call 650-912-1817 to describe the problem and confirm current availability.
Common opener symptoms
The door may not respond to the wall control, work only from one remote, reverse before closing, stop partway, hum without moving the door, or operate inconsistently.
Check the simple things safely
You can confirm the opener has power, nothing is blocking the photo-eye sensors, and the remote battery is not obviously dead. Avoid adjusting force or spring hardware if the door itself is binding or unusually heavy.
Opener problem or door problem?
An opener can appear faulty when the door is hard to move because of a spring, roller, track or cable problem. A service visit can separate an electrical/control issue from a mechanical door issue.