Question about liftmaster Mediumduty Hoist Operator Mt5011e

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Liftmaster professional MT5011

Trolley Carriage moves about 6" and reverses repeatedly both ways. Will not move down when the down button is pushed, only up. Door and opener have been installed for about 2 yrs. No changes to the door or opener.

Posted by Anonymous on

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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swolfinor
  • 504 Answers

SOURCE: Garage Door Opener Malfunction

START BY DOWNLOADING THE INSTRUCTION MANUAL FROM CHAMBERLAIN.COM (FREE PDF FILE) IT WILL WALK YOU THROUGH THE COMPLETE DIAGNOSTICS - HOW TO RELEASE THE BLOCKED TROLLEY - SAFETY EYE ISSUES ETC.

Posted on May 29, 2010

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carmin77
  • 113 Answers

SOURCE: have a 2006 Liftmaster professional 1/2 h.p garage

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

Posted on Feb 26, 2011

t407803
  • 84 Answers

SOURCE: liftmaster Professional 1/2 horse model # 41A5483

check the settings on the unit itself sometimes if you have it set up to come down too rapidly it will cause it stop and go back up because it thinks its hit something.

Posted on Apr 11, 2011

  • 5165 Answers

SOURCE: On the Liftmaster remote control,

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.))

Posted on Apr 30, 2011

  • 11 Answers

SOURCE: replaced the mini belt without

Start over by removing the belt.

Release the door from the trolley.

Then slide the door/trolly latch mechanism toward the motor assy half way,

Reinstall the belt but not the door to the trolley.

Ativate the remote and where the door stops, assuming it is closing , is the lower/closed limit.

Remove the belt, again.

Then side the door latch mechanism near the end of the trolley.

Reinstall the belt and activate the remote.

It should be close enough to fine tune using the limit switches.

Posted on Jul 30, 2011

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1 Answer

Trolley only moves 6 inches then reverses


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 a little. If you cannot get both lights to come on you have bad sensors.

Aug 17, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Replaced the mini belt without incident, actually pretty easy to do. Reinstalled the unit onto the screw and hung in place. Reinserted the wires by color and plugged in the power. The rack and connected...


Start over by removing the belt.

Release the door from the trolley.

Then slide the door/trolly latch mechanism toward the motor assy half way,

Reinstall the belt but not the door to the trolley.

Ativate the remote and where the door stops, assuming it is closing , is the lower/closed limit.

Remove the belt, again.

Then side the door latch mechanism near the end of the trolley.

Reinstall the belt and activate the remote.

It should be close enough to fine tune using the limit switches.

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1 Answer

Last night, I went to close my garage door and as it started to close (door moved about a foot), it reversed directions and opened. I suspected a cat might have ran in and tripped the safety sensor, but,...


On the rear of the motor unit near where all those white wires go you will find a small light. Check to see if it is flashing a code. It will flash a number of times then pause and then repeat. This will help diagnose the problem. Also make sure the trolley hasn't traveled too far and jammed against the bolt just in front of the motor unit. Post back.

May 25, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

My opener is a 1/2 horse lift master professional chain drive . The door will not close unless you hold the closer button in. From the remote it will only move a few inches and then reverse. The door works...


If the main light flashes 10 times when the door reverses it is a door sensor problem. If not, you probably have a bad RPM sensor board which is a small printed circuit board just in front of the motor.

Jun 28, 2010 | Sears Craftsman LiftMaster Chamberlain...

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Liftmaster mod 1245R (1999) has indicator light blinks 5 times. Door will not operate from hardwire button. Tried unplugging unit to reset but same 5 blink sequence returned. Held button in to reset but no...


If your door is in the open position and the trolley is jammed against the bolt just in front of the motor unit you need to remove the bolt and then run the opener until the door closes. While the door is closed locate the 'up limit control' on the side of the motor unit and turn the control a couple complete turns in the opposite direction of the arrow printed on the cover.

Nov 14, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Margin settings


You have to hold the magic margin button down while you move the carriage all the way to the left, then release the margin button. Then repeat for thr right margin. Hold the right magic margin button down while moving the carriage all the way to the right, then release the margin button.

Sep 05, 2009 | Office Equipment & Supplies

2 Answers

My liftmaster garage opener just clicks when trying to open''


You probably have the lock enguaged. Press the lock button on the wall control for four seconds to turn lock off

Mar 22, 2009 | Sears Craftsman LiftMaster Chamberlain...

2 Answers

Garage door opener will not work after gear replacement


From your description it sounds like you forgot to plug in the RPM sensor.

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

2 Answers

How do I reconnect the carriage?


with the power back on .. push the remote control.. and engage the garage door troley with the carriage

Dec 19, 2008 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Opener will not reverse


FIRST YOU NEED TO RESET THE CHAIN .

Unplug power
Release the door from the opener close the door manually. take the chain loose and slide the traveler down to reengage with the trolley. Plug in power, run the unit with chain off untill it completes a clockwise cycle and stops. reconnect the chain and set tension.

Adjust the chain tension.

If it still moves 6-8 inches and flashes 5 times. the problem is in the rpm sensor.

Full diagnostics are in the owners manual - FREE at
http://help.chamberlain.com/help/en-us/InstructionManuals

Oct 06, 2008 | Sears Craftsman LiftMaster Chamberlain...

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