Simply put if the descending door hits an object the motor detects the resistance and the door opens.
Sometimes the garage door opens sometimes id does not.
Here are the troubleshooting steps.
Theoretically it might be possible to repair circuit board problems the problem could be a matter of resoldering a loose connection.
If your craftsman garage door opener is not working at all there won t be any signal to tell you that.
Works intermittently radio interference from other devices such as photoelectric sensors for security lights can prevent the garage door opener from responding to the signal from the remote.
Garage door opener not working.
I went inside and hit the wall unit and it opened.
It worked fine for 2 hours until my wife returned.
Garage doors sometimes seem to have a mind of their own often deciding when and how far they want to open or close.
The problem is often intermittent.
Many garage doors have a powerful torsion spring located horizontally above the door.
Sometimes the fix can be as simple as replacing the batteries in the opener and.
Why does my garage door opener only work sometimes if you have an automated garage door it is likely that you have a garage door opener.
I kept trying and it would not work.
45 minutes later it worked open up as normal.
When the door is lowered the spring winds up tightly creating a pulling force that helps lift the door up.
Likewise if the beam of light between the floor sensors is broken the door will not shut.
I pushed the wall button and it would not open.
You might have absentmindedly unplugged the operator as you were exiting the garage through your internal door to the house.
Sometimes a garage door won t open or close for one reason only the operator has no power connection.
The slightest detection such as accumulated leaves snow or ice around the garage door can cause the door to not shut completely.
In the funniest of scenarios the problem will simply be due to an unplugged power cord.
If you tried operating the garage door opener from both the remote control and the door control and the opener did not activate.
I attempted to open the garge with car remote after returning home it would not open.
Even if your garage door opener does not work as expected it is wise to know the common causes of such a functionality issue.
Check the power supply.