They can easily become mis aligned due to bumping twisting and loose mounting.
Garage door needs button has to be held.
Garage door won t close unless button is held.
So if you have to do this to close the door it means the sensor is malfunctioning.
Next release the button when the overhead opener unit s lights blink.
It is a craftsman.
When i disconnect the carriage and manually move door it seems to move smoothly in both directions.
A small amount and the door returns that is the sign of the safety sensor system.
The learn indicator light will glow steadily for 30 seconds.
If i just press and release the button the door starts to close then reverses.
I have 2 craftsman 1 2 hp door openers each car has a remote and i am trying to get my remote to open with the large button on the remote and my wife s door to open with the other button.
I tried resetting them but now the large button opens both doors at the same time.
You are overriding the infrared beam sensor when you hold down the wall button continuously while the garage door is closing.
One of the sensor lights will usually be blinking when there is a malfunction.
Press and release the learn button on the overhead garage door opener unit.
Until it completely closes and the remotes only make the door move.
Any transmitter like a handheld clicker or outdoor keypad will also not work to close the door if there is a problem with the sensor.
Within this 30 second time period press and hold the button on the hand held remote.
When you can close the door with the wall button by holding it down.
My garage door will open by just pressing the button once but to close it i have to hold in the button until it fully closes.