Garage Door Sensor Stays Red

Each sensor will usually have a light.

Garage door sensor stays red.

A common cause of a malfunctioning garage door sensor is lack of power supply. Look for small led lights on the sensors. For those who are unfamiliar with how garage door sensors work there are two sensors each positioned on a side. 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 green lights let you know there is power going to the sensors. If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply. Raise the garage door using the control button on the garage wall or the remote control unit from a vehicle. If any of these sensors should happen to get bumped or misaligned the infra red beam would be thrown off and the garage door won t go down.

The red light on the receiving sensor glows bright red when the sensors are aligned properly. Linear garage door openers have a green light on the sending sensor and a green and red light on the receiving sensor. One of the sensors sends an infra red beam to the other sensor. Garage door sensor is blinking red.

These sensors are little black boxes found on either side of the bottom of the garage door.