If when the door is closing the main light blinks 10 times and the door reverses to the open position it is a door sensor problem.
Garage door amber light on sensor.
If it s not at the exact height of the other sensor you ll need to adjust it.
The amber led on the sending sensor will glow regardless of alignment or obstruction.
Chamberlain liftmaster and sears craftsman garage door openers manufactured after 1997 will have an amber or yellow light on the sending safety sensor.
Plug in the power cord and observe the lights on the sensors.
The light is emitted from one side of the garage door to a receiving unit on the other side of the door.
When this happens the green light on the receiving.
If this doesn t fix your problem then the problem is more than likely the safety reversing sensors.
To unlock your garage door opener push the lock button for 5 seconds.
The solid white wires connect insert to the white terminal and the white black wires connect to the grey terminal.
If the beam is broken by any object while the door is closing the door will.
Verify the wire connections are correct on the garage door opener.
The amber colored light is the transmitter and the.
Make sure they are pointed at one another and one of them is not blinking ever so slightly.
If they re turned on in both the sensors then there is no issue with the power supply.
Once you have finished doing this you should see a beam.
Safety eye sensors is a transmitter that transmits a beam and the other is a receiver that.
Once you see the double flash press the control button on the remote control.
If both lights are not illuminated proceed to the next step.
If your garage door has been in place long enough enough dirt may have formed on the lenses to block the beam or cobwebs might be in the way.
The light on the sending sensor should always be on even if the sensors are not aligned properly.
If you find the lights turned off in one or both the sensors it indicates that there is a problem in power supply.
Tighten the terminal screw with a small screwdriver.
To adjust the sensor loosen the wing nut with your wrench and set t it to the exact height that the other sensor is at.
Stop and reverse to its fully open position.
Garage door sensors work using an infrared beam of light.
A common cause of a malfunctioning garage door sensor is lack of power supply.
Look for small led lights on the sensors.
If the path between the sensors is unbroken the door will open and close normally.