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Troubleshoot Automatic Garage Door Opener

DIY Questions and Answer December 11, 2008 Chad



Q.  What’s wrong with my garage door opener? The automatic opener was installed by the previous owner. It worked fine for a couple of weeks, then the door quit shutting all the way, returns to the “open” position, and the motor starts flashing lights.

 

A.  The culprit could be a variety of problems, but the flashing lights are a common diagnostic feature used by several manufacturers of garage door openers. If the previous homeowner left behind a manual, refer to the troubleshooting section; the specific number of flashes is usually indicative of the problem. For example, one flash could indicate that a certain wire is misaligned. Six flashes could indicate that the motor circuit has failed. If you don’t have a manual, contact the manufacturer regarding the flash code. Some manufacturers even have the flash code posted online to help pinpoint the problem.