One of the sensor lights will usually be blinking when there is a malfunction.
Garage door opener have to hold button down.
Hold down on the buttons until the in car red light flashes rapidly.
If i lift my finger off the button before that point the door will stop and then i have to.
To open my garage door i have to hold down the button on my wall until the door is at least halfway up.
You are overriding the infrared beam sensor when you hold down the wall button continuously while the garage door is closing.
This sets the in car transmitter to be your garage door openers make transmitter but you are not done.
If an operational problem exists and the garage door opener will not close the opener can be forced to close.
I have a 1 2 hp craftsman garage door opener that is about 20 years old.
When you can close the door with the wall button by holding it down.
Door starts down then stops before it is closed.
If it did then a sensor failure would cause the door to work anyway creating a safety issue.
Recently the wall switch that powers opening and closing is not lit and will not activate the opener.
Until it completely closes and the remotes only make the door move.
Simply disconnecting the sensors will not bypass this behavior.
A small amount and the door returns that is the sign of the safety sensor system.
Press and hold the wall console button until the garage door is completey closed.
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.
Check for interference from adjacent photo eye sensors of any brand.
Having to hold down the button is a classic something has interrupted the beam symptom.
They can easily become mis aligned due to bumping twisting and loose mounting.