How to Repair a Garage Door Opener
When you take into account the power of the electric motor and the extreme tension of garage door springs, it
will come as no surprise that garage door opener's can be dangerous things to work on. That being said, it is still
possible to troubleshoot and repair many problems yourself. Something as simple as the electric eye sensors being
dirty can cause the opener to malfunction or even stop working altogether. Read on for some tips on how to repair a
garage door opener that is giving problems.
The first place to look if you are experiencing any problems with your garage door is the owner's manual. As
obvious as that may seem, many people only start reading operating instructions when all else fails. There is
likely to be a lot of useful tips and information together with tutorial style guides on how to diagnose and even
repair a garage door opener malfunction yourself.
For example, there is probably a table of flashing light codes that can be used to figure out where a problem
lies. Diagnosis is always the first step in fixing any problem, so check the manual to find out what the various
light codes mean. Although the guide will not tell you everything, it is always a good first step in repairing
faulty door opener's.
If the garage door is not opening or closing properly, it could be because of the remote opener malfunctioning.
To check if this is the case, start with proving the electrical power to the garage door. Try plugging another
small appliance into the outlet that you use for plugging in the opener unit. If it works, you know that the power
source is not the problem. Sometimes, too, the motor has an automatic shut off that kicks in when the unit
overheats. In this instance, you should let the motor cool down naturally for about half an hour. You may just find
that it has self repaired itself and works when you try again.
If the garage door opener sensor light is flashing, you probably have either dirty electronic eyes or there is
something blocking the path between them. The eyes are attached to the garage door frame about six inches from the
floor on either side. They create an electronic beam that senses when something is in the way. This in turn sets
off a safety feature that stops the door from going down any further.
Troubleshooting garage door opener problems like these begins with simply making sure the eyes are clean. You
should also make sure that the two eyes are directed toward each other as well as checking that the wiring to them
is making a good connection. Try unplugging the garage door opener for about thirty seconds and plug it back in.
This will reset the electronics and could just make them work again. However, if this has no effect, chances are
that your sensors need to be replaced.
Another problem that can occur with garage door openers is where the door hits the floor and then immediately
reverses and starts the journey back up again. This problem can be caused by the adjustment of the safety reverse
being incorrect. The unit needs to have the close limit reset so that the door doesn't interpret the ground as an
obstacle in the way. Manufacturers such as Liftmaster and Genie have instructions on their respective web sites
showing how to adjust the door limits on screw drive and belt drive models.
If you have some experience in diy home maintenance, you can probably try diagnosing garage door opener
malfunctions yourself with good results. However, don't hesitate to call in the professionals, if the job gets too
complicated for you. Garage doors can be very dangerous when they are not operating properly.