One of the sensor lights will usually be blinking when there is a malfunction.
Garage door opener have to hold button down.
If i lift my finger off the button before that point the door will stop and then i have to.
If an operational problem exists and the garage door opener will not close the opener can be forced to close.
Door starts down then stops before it is closed.
Hold down on the buttons until the in car red light flashes rapidly.
Hold your transmitter up near the selected button pressing both the garage door remote and the selected in car transmitter button simultaneously.
This sets the in car transmitter to be your garage door openers make transmitter but you are not done.
Check for interference from adjacent photo eye sensors of any brand.
I have a 1 2 hp craftsman garage door opener that is about 20 years old.
To open my garage door i have to hold down the button on my wall until the door is at least halfway up.
When you can close the door with the wall button by holding it down.
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.
You are overriding the infrared beam sensor when you hold down the wall button continuously while the garage door is closing.
So if you have to do this to close the door it means the sensor is malfunctioning.
They can easily become mis aligned due to bumping twisting and loose mounting.
I have checked that there is power to the opener and that is not the problem however if i tap the underside of the opener motor with a stick the unit lights up and the.
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.
Simply disconnecting the sensors will not bypass this behavior.