Safety Sensor Lights For Garage Door Not Lit

When the safety sensor is not properly aligned or something is obstructing the light beam the garage door will fail to close.

Safety sensor lights for garage door not lit.

The liftmaster garage door opener lights will flash for ten times. For the door to close correctly without reversing the safety sensors need to be aligned perfectly and there should be nothing in the way of the light beam. The garage door sensor yellow light and the green light together create a solid illumination. Make sure there is power to the opener.

Look for small led lights on the sensors. Unplug your garage door opener from the power source to prevent accidental electrocution. Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle. Light doesn t activate on garage door opener when you cross safety sensor beam chamberlain group products which include the liftmaster chamberlain sears craftsman line of garage door openers have a feature where the opener light will turn on if you cross the safety sensor beam shooting across the opening of your garage door.

A common cause of a malfunctioning garage door sensor is lack of power supply. The sensors have to be aligned with each other and also have to be connected correctly to the garage door system in order to work. The light is emitted from one side of the garage door to a receiving unit on the other side of the door. For people who do not know the transmitter has the yellow light and the receiving sensor has the green light.

If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply. Bad sensors will not keep the door from opening and at least moving a short distance in the down direction. Random flashing of that light is normal. Inspect each sensor to make sure the green or red power indicator lights are.

Replace the opener sensors following the manufacturer. If the path between the sensors is unbroken the door will open and close normally. I think you have a power problem and should start by checking the house circuit breaker. According to liftmaster issues with the safety sensor wiring typically occur because of a poor connection incorrectly connected wires or a short in the wire from a staple.

Garage door sensors work using an infrared beam of light. Remove the old safety eyes noting how they connect to the back of the operator mounted on.