Question about Chamberlain & Liftmaster Garage Doors

1 Answer

Door will not operate unless you hold down button

Posted by on

  • Daniel Morgan May 27, 2011

    can you provide the model number of the unit in question? Also, 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?

×

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 17 Answers

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.]

Posted on May 27, 2011

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

It opens but won't close unless I hold down the wall control button.


the photoelectric safety sensors are not working. either they are not lined up or they have a broken/disconnected wire. door goes up without them working, but will not go down without the safety system working unless you press and hold down button.

Mar 23, 2015 | Building Materials

1 Answer

We installed a door opener checked door for binding but cannot get door to close with wall closure or remotes only way it will close is if you hold down the one on the wall, we didnot however install the...


Yes the lack of sensors will stop the operation unless you hold down the button.

Those sensors emit an IR beam that check for objects (like a pet or child) under the door. This is a safety feature to avoid injury or death. If the sensors aren't aligned or the wire connecting either sensor is damaged, the unit will not operate.

Install the sensors, make sure that they are aligned (lit LEDs on both units) and try the remotes again.

I hope this helps.

Cindy Wells

Aug 15, 2011 | Kitchen Ranges

1 Answer

The door will not close all tthe way unless you hold the button down


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?


HOPE THIS HELPS

Aug 24, 2010 | liftmaster Chamberlain Garage Door Opener...

1 Answer

My garage door opener does not operate unless I hold the buttons in garage all the time


If you mean the door will not close unless you hold the button you need to check the door sensors. Make sure they are pointed at one another and the small light on each one is lit and not flickering. Tweak them to get the lights both on. If that doesn't get the lights on you probably have a bad sensor.

Feb 05, 2010 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My garage door won't close unless I hold the main button down in the garage. As soon as it closes it opens up again unless I press the button quickly. I can open it up using the remote, but cannot close it...


your garage door has saftey sensors at the door
these are photo eyes
in the owners manuel that came with the opener
that has pictures in it which would help
the photo eyes need to be clear of debri and aimed at each other with no obstruction
there are leds on each sensor and when aimes properly they should be light if i remember correctly
if you can not get them to light then you may have to replace the sensors

Oct 27, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Door won't close unless I hold the button all the way down.


make sure the eyes are clean and aligned if the opener thinks something is obstructing its path it will not close

Oct 07, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

My garage door will not close unless...


Check your down limit switch and even your up one too almost sounds like one is stuck one way or the other.

Jun 19, 2009 | liftmaster Chamberlain Garage Door Opener...

2 Answers

My garage door wont go down.I habe to hold the switch down but if i let it go the door will go up again.


I have a Liftmaster garage door that won't go down unless you press and hold the wall button. The sensor lights are both on. The green light on the unit flashes unless I press the reset button. As soon as you press the wall button it flashes again and the door won't go down unless you hold the button the whole time. The remote wont' make it go down either. It begins to sometimes and retracts, but sometimes the light bulb just flashes (like it is obstructed). I tried replacing the wall switch and that did nothing. Help!

May 16, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Sears craftsman garage door opener


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?

Jul 13, 2008 | Sears Craftsman LiftMaster Chamberlain...

Not finding what you are looking for?
Chamberlain & Liftmaster Garage Doors Logo

358 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chamberlain Building Materials Experts

Joseph Hoffmann

Level 3 Expert

1702 Answers

Owen Barnes

Level 3 Expert

867 Answers

OtherBrother

Level 1 Expert

4 Answers

Are you a Chamberlain Building Material Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...