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Jimmy Tuggle Posted on Oct 29, 2019
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My garage door will close but will open right back up . I don't have any sensors on the door. What could be causing this?

1 Answer

Kerry Cunningham

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  • Expert 66 Answers
  • Posted on Oct 29, 2019
Kerry Cunningham
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Joined: Sep 21, 2013
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Try making sure there is nothing sticking out that would make the door stop and reopen , it's a safety built in to keep people from getting munched in the door !!!

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Apr 14, 2008

SOURCE: garage door opener troubleshooting

Try backing off door travel ajustment,

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Anonymous

  • 3197 Answers
  • Posted on Apr 30, 2009

SOURCE: My garage door opener won't close the garage door.

Most likely your door sensors have been bumped and are not aligned properly. Make sure they are pointed at one another and the small light on each one is lit and not blinking.

Anonymous

  • 3197 Answers
  • Posted on Sep 12, 2009

SOURCE: Remote Control closes garage door but does not open

It sounds like a case of your keypad losing signal strength enough that it cannot transmit through the closed door. If a new battery doesn't do the job a new keypad will.

Mrteaze

Tim Degenstein

  • 101 Answers
  • Posted on Sep 29, 2009

SOURCE: Garage Door will not stay closed.

You need to check the adjustment for the travel of the door ... All automatic closers have a built in safety mechanism that prevents children, pets and even yourself from being crushed by the door ... so if the travel is set to low the door will hit the ground too hard and safety mechanism will activate opening the door again! Look at you documentation for how to adjust this for your particular model :)

Anonymous

  • 3197 Answers
  • Posted on May 20, 2010

SOURCE: Craftsman LiftMaster Chamberlain Garage Door Opener Wireless Keypad Model 976LM Security+: Can I bypass the sensors on my garage door opener?...

You cannot bypass the sensors but you can try reversing their position so that the sun isn't hitting the receiving unit. You can also move them back from the door or use something like the tube inside a roll of toilet tissue to shade the lens.

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I'm having to hold the main remote button down continuously to get the door to close. It acts like something is obstructing the path, but it's clear. The sensors have a green light on one and a...

You need to hook those wires back up and then check the door sensors very closely. If the light in one of the door sensors is dim or flashing it will cause your problem.
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The motor runs but it only opens a few inches and slowly goes back down its a chamberlain whisper drive model HD900D

Hi. I have seen this before, although usually not from chamberlain garage door openers.

Pull the release cord that unlocks the door from the opener, and manually open the door ALL the way open.

Then lock back in place in the open position.

Then use automatic opener to shut door.

It will close very slowly, but should close all the way.

Then, open the door again using the remote, and the door will once again open slowly, this time it should open all the way.

Then close door with remote, and door should now close as it is supposed, with the proper speed.

The slow opening and shutting is the system position sensor resetting itself.

This is why your door is acting up.

I would also look up by the belt drive connects to the front of the garage door opening, to make sure there isn't any dirt, cobwebs, or other obstructions on the sensor that may cause it to re-close the way it does.
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Lift master Garage doors the door doesn't close. once i press the button to close my garage door it shuts the door momentarily and then it opens right back up by itself. nothing is blocking the sensors.

Too much tension on the door can make the "brain" respond by opening the door, thinks something is in the way.... check for binding tracks or wheel guides, loose bolts, dry chain, tension on cables or springs ( be careful here), misaligned sensors....
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Left Sensor has yellow led & right sensor is green. Garage closes and then immediately opens. I'm assuming it's the sensor with the yellow led. How do I fix this?

If the main light flashes 10 times when the door reverses it is a sensor problem. Make sure the door isn't hitting the floor and then reversing. This problem will not cause the light to flash 10 times and can be corrected by adjusting the 'down limit' which is on the side of the motor unit.
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Have to hold the push button inside my garage to close garage.

You have a door sensor problem. Make sure the sensors are pointed at one another and the small light on each one is lit and not blinking. Also check the wiring.
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Automatic garage door

Hello,

There should be 2 sensors on the bottom of your door on the inside, 1 on the right side and 1 on the left side.
These sensors serve 1 purpose to send a beam or reflection to each other.
If something is blocking this reflection or is in front of the sensor the door will always come back up.
It is a safety feature so nothing or no one gets hurt when the door is closing!
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Craftsman 1/2 HP door opener bounces back open

Hello,

There should be 2 sensors on the bottom of your door on the inside, 1 on the right side and 1 on the left side.
These sensors serve 1 purpose to send a beam or reflection to each other.
If something is blocking this reflection or is in front of the sensor the door will always come back up.
It is a safety feature so nothing or no one gets hurt when the door is closing!
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Old nutone garage door opener

Hello,

There should be 2 sensors on the bottom of your door on the inside, 1 on the right side and 1 on the left side.
These sensors serve 1 purpose to send a beam or reflection to each other.
If something is blocking this reflection or is in front of the sensor the door will always come back up.
It is a safety feature so nothing or no one gets hurt when the door is closing!

If any thing is blocking these sensors the door will not close! Make sure nothing is in the way not even a peice of paper.
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