Garage Door Sensors Have No Lights

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 have no lights. The door should stay open and the motor unit lights should blink. Place a box or similar object between the safety sensors to block the sensing beam. There is one instance where the sensor lights may not be shining at all and that is if you have one of linear s newer garage door openers with a dc motor. 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.

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. Okay now that you know some of the common signs of garage door sensor malfunction you re ready for the next step troubleshooting. Inspect each sensor to make sure the green or red power indicator lights are. Here s how to tell if garage door sensor is bad five things to check.

If one of the leds is blinking the sensors need to be realigned. Other signs include flashing garage door opener lights missing sensor light or flashing sensor lights. Each sensor will usually have a light. One will have a green light used to show that the units are powered up and the other will have a red light to show that there s no obstruction between the sensors and that they re seeing each other.

The garage door sensor yellow light and the green light together create a solid illumination. Each sensor has an led light on the exterior of the sensor. Attempt to close the garage door using a remote. The newer openers will go into a low power mode to save energy and the safety sensor lights will turn off.

Open the garage door. For people who do not know the transmitter has the yellow light and the receiving sensor has the green light. Look at both the garage door sensors.