Safety Sensor Lights For Garage Door Not Lit

I think you have a power problem and should start by checking the house circuit breaker.

Safety sensor lights for garage door not lit.

For people who do not know the transmitter has the yellow light and the receiving sensor has the green light. Bad sensors will not keep the door from opening and at least moving a short distance in the down direction. 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. If the path between the sensors is unbroken the door will open and close normally.

The ceiling of the garage door. The garage door sensor yellow light and the green light together create a solid illumination. A common cause of a malfunctioning garage door sensor is lack of power supply. When the safety sensor is not properly aligned or something is obstructing the light beam the garage door will fail to close.

The light is emitted from one side of the garage door to a receiving unit on the other side of the door. 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. Garage door sensors work using an infrared beam of light. If you do not see a solid illumination or your garage door is not working the problem is most likely due to the sensors being out of line.

Remove the old safety eyes noting how they connect to the back of the operator mounted on. 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. Make sure there is power to the opener. If they re turned on in both the sensors then there is no issue with the power supply.

Inspect each sensor to make sure the green or red power indicator lights are. Look for small led lights on the sensors. The liftmaster garage door opener lights will flash for ten times. Replace the opener sensors following the manufacturer.

Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle. Unplug your garage door opener from the power source to prevent accidental electrocution.