Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener "beams garage door thats green" Questions

garage door; inside button flashes When remotes are keyed, the inside light on the garage door openner flashes a couple of time, but does not open the door. The wall button on the inside has a lite in

...door will only go down if i hold the button This is what we call in the buisness a constant hold down , that means that the sensors are not aligned , be careful when checking theese sensors because ...