If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
Short garage door opener.
If none of the following fixes seem to correct the problem you will need to consult the owner s manual or contact a professional.
This will vary by model and it requires an oscilloscope to verify.
Improve the performance of an opener and increase the range by adding an antenna extension that you can buy online or at electronics outlets.
Call for free estimate 1 800 478 8428.
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When your garage door opener suddenly stops operating properly the cause of the problem is usually pretty simple to understand and the solution is usually quite easy.
Here are the eight most common problems along with the most likely repairs for each.
Place a stepladder at the area of the garage door opener.
For the craftsman 1 2 hp garage door opener i have i d need a signal generator that sends a pattern of 6 millisecond long 6 volt pulses followed by no signal for 0 5 milliseconds.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
This needs to match the signal the sensors send so the garage door works normally.
The nexx garage is the best smart garage door opener for alexa users but it works with google home too so you can open or close the door using voice commands.