Remote opens door but will not close door (Liftmaster)

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Most garage door operators (openers) have infrared safety "beams". The door won't close, even with a wired push button, if something is in the way.

It sounds like a problem with the infrared safety beams, either they are not working, are misaligned (someone might have kicked/bumped into one), or I even had one that didn't work because there was too many cobwebs/dust covering one of the lenses.

Hi, it is probably the safety photo beams out of alignment or not working, when this happens the garage opener goes into 'dead man' operating mode, ie you need to keep the button pressed for the door to operate. You can find user and installation manuals here - Liftmaster Garage Door Opener Installation Manuals

You could program these buttons to operate other garage door openers or to control other devices that work on the same frequency. http://www.liftmaster.com/consumerweb/products/pflHomeConvenience.htm has light controllers that let you turn on or off a light in your home with the garage door opener. You can easily program one of the small buttons to control the lighting system instead of the main button. (Thus the light would be controlled independently of the door opening and closing.)

Single button remotes can be purchased but currently most garage door openers are sold with the 3 button versions. http://www.liftmaster.com/consumerweb/products/pflRemoteControl.htm

I hope this helps.

Cindy Wells
(In my household, there are 4 garage door openers installed. When three of the door openers were on the same frequency, we could have had each one respond to a different button on a three-button remote. Now two are on a separate frequency so only two buttons have been programmed on the various remotes. (One group opens the house and workshop; the other opens the house and barn.))

The opener should have an antenna wire hanging out of it. Did someone/something hang on it?

COULD BE A BAD REMOTE, I WOULD TRY ANOTHER ONE FIRST.

COULD BE A FREEZER ETC. PUTTING OUT INTERFERENCE.

OR

Anytime a door opens and/or closes randomly or doesn't work consistently I look for a smashed wire between the motor unit and the wall button.

If the wire is smashed the insulation becomes so thin that power will leak thru the insulation and activate the door or interfere with the remote signal.

Loosen the staples with a small screwdriver and slide the wire about ½ inch to move any areas of thin insulation away from the staples.

The second thing would be a bad wall button or a remote with a sticking button.

Or a remote in someone

Check the wiring going to the sensors to make sure it is not broken or disconnected. You have a problem with the sensors themselves or the logic board. Unfortunately the only way to be sure is to replace.

Reset the Liftmaster unit. There should be a red reset button on the unit in the garage. If this does not work, reset the breaker. Good Luck!

check electric saftey beams. shovel blocking them. dirty. aligned (LED on in each unit)