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Chamberlain 7220 no longer opens door

We have made sure the pulleys are the same distance from the wall - - nothing is obstructing the door - - the door goes up just a little bit then stops - - will go all the way down - - manually the door works fine

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Chamberlain Liftmaster Professional 1/2 HP

Okay...upon further inspection, my left spring has broken in two. Going to call around for some quotes to replace the spring. Thanks for the suggestions.

Posted on Jul 25, 2008

  • 6 Answers

SOURCE: Chamberlain Liftmaster Pro. Garage door Problems closing

The sensor eye - or more likely, the other end, the sensor light - probably got knocked out of alignment. The eye should have an LED on it - possibly one that glows green when it's ready to close or red when it's obstructed or out of alignment. Try adjusting the light until the LED on the receiver glows green.

Posted on Dec 07, 2008

Doorguy27
  • 30 Answers

SOURCE: 1.3HP CRAFTSMAN CHAMPION GARAGE DOOR OPENER-NEW IN 2004

Well sounds like its a pressure setting. you said you open the door by hand? Was it easy to do? Ask your self this can a 15 year old kid open it and close it? If so then it sounds like its a presure setting There should be two blue slots on your opener with numbers 1-9 says up and down force. Turn the up force towards the bigger number. Just a little bit. But before you do that as the other guy stated make sure that your cables and springs are working. Spring depending on your doors can be in three places but we going to assume you has the most common set up so look over the top of your door (with it closed) you should eb able to see a tube running across there. and somewhere in the in middle a set of spring look at the spring to make sure that you dont see any of the tube showing in the springs. Becare not to touch the spring as they are under a lot of stress.

Posted on Feb 10, 2009

  • 3197 Answers

SOURCE: My 1/2 hp Chamberlain garage door stops while

On the back of the motor unit you will find the down force control. You may have to remove a light lens depending on your model. Increase this a 1/4 turn and try.

Posted on May 14, 2009

  • 1 Answer

SOURCE: wayne dalton classic drive 3018, door goes 90%

wayne dalton classic drive squeaks and binds then stops

Posted on Aug 09, 2009

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1 Answer

Dip switch


You don't need codes. I'm not sure what you are trying to do but to program the opener for a remote you need to hold the button down on the remote while you press and immediately release the smart/learn button. The smart/learn button is on the rear of the motor unit near where all those white wires go.

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My Chamberlain Liftmaster Formula 1 garage door (2002) has stopped working. The power is on -- light turns on when I push the wall mount button. But the remotes no longer work. The door does not move. ...


The light by the learn button may be sending a diagnostic code. See if it is flashing a number of times, pausing and then repeating. Count the flashes. Is your door stuck in the open posititon?

Jun 11, 2011 | Sears Craftsman LiftMaster Chamberlain...

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I have a liftmaster Model 1240. Door will open by remote or wall opener. The door will only close while holding wall opener button down. If i try and close via remote, light starts blinking and door...


The only thing that will cause the main light to flash 10 times and the door to reverse to the open position is a sensor problem. Make sure the light on each sensor is on and not flickering ever so slightly. Make sure they are not moving when the door starts to close. Lights on sensors should not blink. One light should stay on constantly and the other sensors light should go off when you block the sensors.

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1 Answer

Door closes but bounced back immediately. No lights blinking, no obstruction, we turned the down forced clockwise, but unable to fix it. I did notice the roll bar is not stopping at the end of the track...


It is not the down force, but the distance the operator tries to push the door down. Sometimes this changes (I'm not sure why). Locate the dial on the opener that sets the down amount and reduce it. Once you get the door to stay down, check the down force again to ensure that it's not too much.
Gary

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1 Answer

We can't close our garage door


Make sure neither light on the sensors is flickering. Tweak them a bit to make sure they are aligned properly.

May 16, 2010 | Sears Craftsman LiftMaster Chamberlain...

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

My garage door won't close. I push the remote and


If your springs were sprung it would not be that easy to open.The reason it crashes down is because they have the door balanced good for the door opener.Check on the door opener itself and see where the reset button is.Maybe something was obstructing to not let it open..Look for the reset and that should get you going on the door opening and closing.Just going to have to figure it out why it did that..

Mar 30, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door opened, won't close


If you can press and hold the wall button and the door will go down, you have a photo eye issue. Check the photo eyes at the bottom of the door.

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

1 Answer

Chamberlain Liftmaster Pro. Garage door Problems closing


The sensor eye - or more likely, the other end, the sensor light - probably got knocked out of alignment. The eye should have an LED on it - possibly one that glows green when it's ready to close or red when it's obstructed or out of alignment. Try adjusting the light until the LED on the receiver glows green.

Dec 07, 2008 | Sears Craftsman LiftMaster Chamberlain...

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door does not close without holding wall button in

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