My son just wrote me the following re his automatic garage door opener:
"We came home today and discovered test our garage seems to be
opening on its own.
There's nothing sitting on the automatics in the cars and nothing stuck
at or near the garage.
To stop this temporarily I switched to manual and unplugged.
But this is a temporary fix for something goofy"
Anyone have any thoughts as to what might be going on ?
As always, thanks for help.
replying to Bob, Iggy wrote:
1st - He'll need to make sure his Threshold Sensors or Eyes are clean, clear and
aligned (green light). These being less than perfect can cause similar behavior.
2nd - He can replace the batteries (if he can't test them) in the remotes. For
some reason some remotes put out signals as the batteries die or get too low in
3rd - He can fool with the Up Force and Down Force knobs. While this can ruin
the safety of the Opener, it's allowed doors to operate perfectly for many years
more. He'd just mark or remember their starting position (i.e. 1-o'clock) and
then twist them around a bit to grind debris out of the potentiometer switches.
But, he wants to still leave them set a little higher (i.e. 2-o'clock).
4th - The Control or Circuit Board has been blown by a surge or by its own cheap
Planned Obsolescence parts. Most Openers don't have decent surge protection and
aren't plugged into a Surge Protector. He'll need to replace the Control or
Circuit Board or just get a whole new Opener, as they can be almost the same
5th - He can try changing Security Codes, to stop a neighbor's remote from
triggering his door. But, if we're talking about an Opener that's 10-years old
or less, this isn't an option. The "newer" Openers have self rolling codes and
therefore no ability to change or set a code.
Assuming it is the newer ones with the optical safety, the reflector may
have gotten out of whack and it thinks the door is going to hit
something. That would cause it to go up. There is also a limit switch
to tell the door when to stop and that may be out of adjustment.
Manual may have a diagnosis in the troubleshooting section.
Possible interference from someone else's remote or even another
device. I have a driveway alarm that, despite my trying different
"encodings" on it, insists on going off every time one of my neighbors
closes his garage door with his remote.
Someone who thinks logically provides
a nice contrast to the real world.
I'd start this guessing-game by pulling the cover and blowing the spider webs and dust out of the door opener, any door safety sensors and any of the wall-mounted push buttons.
Another guess would be to change the code on the remotes and opener.
Another guess would be to remove the batteries from both remote controls to see if the door still opens on its own.
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