The first is photoelectric and the second is mechanical.
Sears craftsman garage door opener opens by itself.
The door operator button is similar to a door bell.
As these wires short against the housing the electrical impulse causes the door opener to activate.
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There are a few unusual factors that can cause your door open by itself.
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Reverses on its own.
The button can easily get dirty and stuck in the pushed position.
Our craftsman 1 2 hp garage door opens automatically.
There may also be loose wire connections inside the button housing itself.
Here are a few scenarios we ve come across.
This will cause the door to open and close until the button becomes unstuck.
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When your garage door opens or closes when you haven t triggered the remote one possible cause is that a neighbor s remote was programmed at the same time as yours.
Erase all codes in your remote and then reprogram it.
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To troubleshoot the garage door opener button make sure it s clean and free of debris.
The symptom of this is a garage door that is in constant motion opening fully then immediately descending only to start the same cycle again.
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The first thing we noticed was the remote key pad opener didn t work.
This has been happening for past week and a half.
Then the door would be open when we knew we had closed it.
Yes it s possible although rare for your garage door to open by itself.
This is actually a very rare problem of all the garage door installation problems you can have but when it happens it s usually a short in the circuit board says andrew richards owner of legacy garage doors an atlanta area garage door repair company.
In some rare cases a garage door will open or close by itself even if the homeowner hasn t instructed the automatic garage door opener to do so.
It all depends on the configuration but you likely have a button that activates the door operator.