Our garage door has the same problem, I just googled and got the following:
My garage door will only close if I hold the wall button down until the door reaches the floor.
Your safety sensors are either damaged, misaligned, shorted electrically, or something is blocking the beam. Check for any obstruction - even something like debris stuck to the bottom of the door. Clean the lens of the sensor. Make sure the sensors are lined up with each other. Make sure power is getting to the sensor. You can determine which is the sender and which is the receiver by covering one of the lenses. If the sensor indicator light stays lit, you have the sending sensor. Adjust the receiving sensor.
My garage door will only close if I hold the wall button down until the door reaches the floor.
Your safety sensors are either damaged, misaligned, shorted electrically, or something is blocking the beam. Check for any obstruction - even something like debris stuck to the bottom of the door. Clean the lens of the sensor. Make sure the sensors are lined up with each other. Make sure power is getting to the sensor. You can determine which is the sender and which is the receiver by covering one of the lenses. If the sensor indicator light stays lit, you have the sending sensor. Adjust the receiving sensor.
选择“Disable on www.wenxuecity.com”
选择“don't run on pages on this domain”
