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Garage door opener won't close unless button is held. replaced safety sensors, tried realigning sensors, no joy. help!

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There is a safety setting for how much force the door will close with before it stops and reverses. This is to prevent a child from getting crushed. If this is set too lightly then the sensor believes that the closing door has encountered an object and will reverse to open.Adjust GRADUALLY until door just closes properly.Too much force will cause damage. Good luck.

Posted on Apr 15, 2015

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Hello. follow this link and read Q&A #1, I think this may be the issue. The link to purchase new sensors (if necessary) is imbedded in that paragraph at the end. Also, here is their toll free: 1(800) 711-8410. If this helps please vote four-thumbs please.

Good luck.

Posted on Mar 25, 2011

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1 Answer

How do I get my remote to close the door? It will only open it.


Light sensor at bottom of door may be broken or something in the path of the light or the sensor and light source need to be realigned.
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Aug 25, 2014 | Building Materials

2 Answers

HBW0777 Liftmaster garage door opener will not close unless wall button is held down. Weirdly enough it only does this in early fall to early spring for last 3 years. What can I do to fix it?


Have the wiring checked out for proper voltage and ground, when it is acting up. The seasonal change may affect the ground rod, it may not be well grounded.

Nov 26, 2013 | liftmaster Garage Door 1/2 Hp

1 Answer

Door will not operate unless you hold down button


I am presuming the following: is it that the door will not operate unless you hold down the button to "close the door"? And the button you are pressing is the hardwired wall button or control inside the garage correct? And if you try to close the garage door with the remote the overhead lights flash off and on or the motor make a clicking sound (about 5 clicks?)
The problem is either an obstruction of the safety sensors at the bottom of the door or, one or both sensor eyes are out of alignment. If you look closely at both safety sensor eyes on the part that faces into the garage, you should see a glowing LED. One side will be an Amber color and the other Green. If one is lit (amber) but the other is not (green), that is an indication that the beam is not being received by the receiving eye (amber).
If there is no obvious obstruction (check for spider webs, dust, try cleaning the clear lenses facing each other, etc,) Try re-aligning the sensors. When they are properly aligned the Green LED will be lit. Now, check the motor for operation.
If you have difficulty getting the transmitter eye (green LED) to light, try closing the door at the wall button, then, pull the red emergency release handle to disengage the door.
Now, try operating the motor unit with the door disconnected while using the hand held transmitter. If the motor unit operates to the close position while the door is closed but not when opened, then that sounds like there is sufficient light entering the garage to "Wash" the transmitter beam out so the receiving eye does not get it.
Contact Chamberlain/Liftmaster for Sensor eye blinder shields that can be easily installed by you. (they just snap on) If neither LED is lit, make sure that the wire to the sensor(s) has not been cut off at the sensor itself. If that checks out, check the connection at the logic board. Make sure that both wires are securely connected.
If after checking all of that, and you do not have either of the LEDs on, then disconnect the safety sensor wires from the motor unit's logic board. Then take a 2" piece of bell wire and jump it across the two terminals for the safety sensors. If the unit operates normally when using the hand held transmitter, then the problem is likely: a) Bad safety sensors b) Broken wire to one or both sensors
To check if the safety sensors are good:
Remove both sensors from their mounting brackets. measure about 8" to 12" of wire from the back of the sensors and cut. You should have about 8 - 12 inches of wire on each. Now, separate and strip the insulation from each and then match the white striped wires and twist them together, and do the same with the solid non-striped wires. Take the sensors up to the motor head and connect the spliced wires to their respective positions on the logic board. Now, Point the two sensors directly at each other (its okay if the clear lens part are touching each other) Check if both LEDS are now lit. 1) If YES; then the sensors are good, the wire to them is broken somewhere; [FIX] replace the wires for both sides. 2) If NO: then the safety sensors need to be replaced. [FIX] Replace the sensors, contact Chamberlain / Liftmaster for replacement parts. You will need your garage door opener's model # which can be found under the light bulb or light fixture on the opposite side of the logic board. Having the model # speeds up the parts search for you.
I hope this helps you out. [I have been factory trained on residential and commercial garage door openers by Chamberlain / Liftmaster and have been providing installation and tech support on them for over five years. Prior to that I used to install and repair these units, and I've done that for nearly seven years.]

May 18, 2011 | Chamberlain & Liftmaster Garage Doors

1 Answer

I have a liftmaster garage door opener - the door opens fine but I have to hold the enter key or wall button until the door closes.


By holding down the wall button you are bypassing the photo sensing safety eyes. Look at them at the bottom of the track. Both should have an led light on them and both should be lit. If not try to realign them. If this does not work look at the actual sensors and the wiring for damage. You can test these with a 9v battery. If they are not good you can get replacement units at chamberlain.com, they are sold in pairs. Thanks. BB

Oct 09, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Doors open but will not close


Check the laser. Make sure that the safety lasers are properly alligned, If the bottom sensors next to the floor on the door rails sounds like it has been moved and just needs to be realigned. Pretty simple work to take care of the problem unless the sensor is broken

Apr 13, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Must hold wall unit to close garage door...


there is an error in the system. most likely The safety beams (mounted on the track near the floor) are out of alignment and the LED light should be blinking. The garage door opener will not let the door close if the beams are misaligned. Realign them and the LEDs on the beam or on the operator will stay on. you should be able close the door now with one push.

Apr 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Garage door will not close


HOLDING DOWN THE WALL BUTTON OVERRIDES THE SAFETY EYES.
WHEN HOLDING IT DOWN MAKES THE DOOR CLOSE PROPERLY THE PROBLEM IS IN THE SAFETY EYES.

ARE BOTH LEDS ON? - CHECK FOR A LOOSE OR BROKEN WIRE.
ARE THE EYES WIRED CORRECTLY?
ARE THEY AIMED AT EACH OTHER?

Jan 21, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

SEARS/CRAFTSMAN 53628SRT Not Closing properly


sounds like the safety door sensors are at fault,also did you reprogram the remotes by pressing the smart button on the logic board,when the safety sensors are bad the door will reverse to open state.you can pully the rip cord to manualy close the door untill you solve the problem.

Sep 04, 2007 | Sears Craftsman LiftMaster Chamberlain...

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