Garage Door Won T Go Down Light Blinks

Troubleshooting a liftmaster with a flashing light step 1.

Garage door won t go down light blinks.

Garage door opener light blinks led light blinking indicates a problem note. If one or both leds is blinking the sensors are misaligned. The blink rate on the garage door opener service light points to various error codes. If you own a new garage door opener that comes with a locking feature it s possible someone may have accidentally locked your garage door by pressing the lock button.

There are several reasons why your garage door opener is doing this. The led light that is referred to in this article is the small light that is located on the opener near the adjustment learn or program buttons. Place a step ladder under the liftmaster motor so you can comfortably access the learn programming button. The transmitters remotes will not work to close the garage door.

The movement should be fluid with no tough spots. Then open and close the door. If you try to open your door using a remote while the lock system is engaged you ll notice that the garage door light will begin blinking continuously. Ten flashes of the light tells you there is a problem with the door safety sensor circuit.

If this is your situation the first thing you ll want to do is make sure these sensors are properly lined up. You will need to use a ladder to access this area. If the led s on both sensors are off the problem is in the logic board or the sensor wiring. If one of the leds is not on the door sensors need to be replaced.

However the two most common reasons include a problem with the lock button and malfunctioning safety reversing sensors. Look at the led s on both door sensors. The back of the motor has a circuit board with a service light as well. When the infra red sensors are malfunctioning usually one of the sensor lights will be blinking.

If your garage door sending sensor is showing a yellow light and the other does not show a green light it is likely they are misaligned. The garage door will automatically reverse if it encounters too much resistance or if the sensor beam is interrupted. You may want to check the back of the motor unit. Having your garage door light blink continuously is not only annoying it s also a sign that there is something wrong with the mechanism.

To check for resistance start with the door closed and pull the red handle.