Q:  Why should I Use a Professional Garage Door Installer?

We believe that the installation of a garage door is not a do-it-yourself job. A garage door is the largest moving object in your home and because of the large number of small parts, installation of a garage door is highly technical. Connecting the springs can be particularly dangerous and proper installation is critical to the performance of your door.

Professional garage door dealer/installers can typically install a door in a few hours and are careful to make sure safety requirements are met. Installations by most homeowners typically span several days and cause much frustration. In addition, incorrect installation can void certain warranties, so we recommend a professional handle the job for you.

Q:  Why does my garage door reverse when closing?

A:    There are a few different things that can cause this type of problem,
         which are listed below with corresponding solutions:

1. Clear any obstruction from between the safety sensors. Loose leaves, trash, and dirt on the lens of the sensor itself are all examples of things that can obstruct the sensor's signal.
2. Check each sensor for a steady glowing indicator light. If both indicator lights are on, or if one indicator light is flickering, the sensors may be slightly misaligned. To check for misalignment; obstruct the beam of the sensors so that they cannot see each other. When the beam is blocked, the indicator light on one of the two sensors will temporarily go out. This is the receiving sensor. Remove the obstruction and loosen the wing nut on the back of the receiving sensor. Adjust the receiving sensor until the green indicator light goes out, if not already out, then realign until the green light is bright and steady, then retighten the wing nut. This usually takes a couple of attempts before it is back in alignment.
3. If an indicator light is out on one or both sensors, check for a possible loose or shorted wire. Sensor wires are attached to the white and black terminals on the back or side panel of the overhead motor unit. Check that they are securely connected to each terminal. Also check the wires for any breaks, especially anywhere they are spliced together.

Q:  My door won't open.

A:  Check your garage door springs.  You may have a broken spring.  This picture
     shows a broken spring on a garage door.  You can see where the spring is in
     two sections. 

Q:  I press the button for my garage door opener and I hear the motor running, but the garage door does not seem to move.  What is wrong?

A:  If the opener makes a humming sound for at least 10 seconds, as if the 
     electric motor is running, but the door does not move, then the opener may
     have damaged or worn gars inside the overhead motor case.  You can verify
     this by removing the metal wrap-around cover from the overhead case.  Any
     damage to the gears will be readily apparent.

You can also go to www.liftmaster.com/consumerweb/service/faq.  This is Liftmaster's website and has answers to other questions you may have.