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Should the lights on the sensors both be green

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Garage door will not stay closed - one sensor is showing a green light and the other one is showing an orange light - i have tried to adjust position with no luck


When the two sensors are completely aligned, both sensor will show green lights. Usually the green light is your sending side and the orange/red side is the receiving side. You can measure the distance from the ground on the sending side and then adjust the receiver end to the same to get you in the general ball park and then fine tune it from there.

Jul 10, 2011 | Vacuums

1 Answer

I have a liftmaster 41A4252-7 garage door opener. The sensors have little green lights when they are aligned. I cannot get the green light to come on on one of the sensors, even though i am moving it...


Hello,

It may be a defective sensor, but check the wiring first. You can splice a piece of wire in between the wiring from the controller and the sensor, then move the sensor closer to the beam emitter, and look for the green sensor light. If there is no light, and no issues discovered with the wiring connections, replace the sensor. They are available as a universal replacement kit at Lowe's, H-D, etc.
Best regards, --W/D--

May 31, 2011 | Garden

2 Answers

DOOR CLOSES MOST OF THE WAY AND THEN OPENS. LIGHT THEN BLINKS TEN TIMES. I NOTICED THAT ONE SAFETY SENSOR IS GREEN AND ONE IS YELLOW. PLEASE ADVISE.


Hi. The sensor with the yellow light is telling you that it is miss-aligned, Usually it only takes getting bumped to knock them out of alignment.
I would slowly turn or adjust the positioning of the sensor.
The one with the yellow light should turn green when it is all the way in line so that the beam is completing it's path.

It's out of adjustment, so the sensor is looking at it like there is an object blocking the door from closing.
It's called the obstruction sensor.
It's there as a safety feature, so that the door doesn't come down and smash anything in the opening.

I hope this helps you out.

Feb 04, 2011 | liftmaster Garage Door 1/2 Hp

1 Answer

Ai2hh-2 green flasjing light on unit and remote


The problem of electronic control units in the indoor air conditioner, there are two temperature sensors, sensor pipe evaporator and room temperature sensor. one or both of these sensors is defective, so that electronic controller error and showed signs of a green light flashes and the remote does not work. You must replace both sensors with a new and appropriate size (specification)

Jul 24, 2010 | Heating & Cooling

1 Answer

We have a 1/2 hp garage door opener and it is blinking 4 times. it will shut with continuous pressure on the button but not with a single press. the sensors are different, one has a continuous yellow light...


The most common reason for the green sensor to flash is because they are not pointed directly at one another.

  1. Check each sensor for a steady glowing indicator light. If both indicator lights are on, or if one indicator light is flickering, the sensors may be slightly misaligned. To check for misalignment; obstruct the beam of the sensors so that they cannot see each other. When the beam is blocked, the indicator light on one of the two sensors will temporarily go out. This is the receiving sensor. Remove the obstruction and loosen the wing nut on the back of the receiving sensor. Adjust the receiving sensor until the green indicator light goes out, if not already out, then realign until the green light is bright and steady, then retighten the wing nut. This usually takes a couple of attempts before it is back in alignment.

Jan 01, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

New eye sensor not lighting up when installed


Make sure the sensors are pointed at one another. Also one of them should say "sending unit" and the other is the "receiving unit". Did you buy them new and from a dealer?

Jun 10, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My door will not go down, I can't make the sensor turn green. It was working good and just stopped all at once. How do I know if I have a bad sensor or it is just out of alighnment?


you have to keep moving the sensors until the light stays on steady green not blinking. one is a sending the other is the receiver. If the lights are on steady green they should show an unbroken line of sight. I have a smiliar problem and have the sensors duct taped together with the green light on constantly and it still won't go down. but firts try and get the green lights to stay on...hope this helps don

Apr 02, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage sensor problem


The colour on the sensors doesn't change.
One is orange constantly and the other is green when detecting a signal from the orange sensor.
If the green is flickering, they are not adjusted correctly.Move the green sensor until you get a good solid green. Holding the wall pad button down, just bypasses the sensors.

Try adjusting only the sensors so that they are solid.

In addition, check the little yellow light on the back of the machine and count the flashes.
The number of flashes will tell you what the error is in your manual.

Jun 18, 2008 | Chamberlain Powerdrive PD422D 1/2 HP...

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