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Craftsman opener, limit switch not stopping motor.

I have a 139.53513 opener. I installed a new limit switch, but when switch makes contact, it just keeps going ! Only on down cycle, up works fine. Any ideas? Thanks, Rod {951} 830-5444

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  • 34 Answers

Try adjusting limit switch wheel to shut off just a little earlier by spinning wheel closer to limit if this doesnt help im afraid sometimes even new parts can be faulty you might try another replacement

Posted on Oct 10, 2009

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1 Answer

Garage door will not go down it is in the up position and wants to go up but hits the motor and won't go down,


It sounds like your up limit control is badly out of adjustment. Remove the cover from the motor unit and you will see the limit switch assembly. You need to adjust the up limit contacts so they make and then your door should reverse and go down. Adjust that up limit so the door stops when the trolley is about 5 inches from the motor housing.

Apr 30, 2011 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

The motor turns in one direction and will not


It isn't the capacitor. That thing just helps the motor start running and nothing else. Red or blue wires either side just so the same color is on the same little U shaped contact.

Check the wiring to the limit switch assembly. A wire may have come off or if you had them off make sure they are on correctly. Yellow wire to the up contact - Gray wire to the center contact and Brown wire to the down contact. The lamp flashing 10 times is telling you that you have a door sensor problem.

Nov 19, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Motor will not stop.


The wiring for the limit switch assembly is:

Yellow wire to the up limit contact

Gray wire to the center contact

Brown wire to the down limit contact

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

1 Answer

Older garage door opener, 1/2 hp limit switch does not stop door in up position keeps trying and does not shut off?


If this is a Craftsman you need to remove the cover and you can then watch the limit switch assembly. If it is a Genie the up limit contact is probably broken

Oct 11, 2009 | Sears Craftsman LiftMaster Chamberlain...

3 Answers

How do I reset my garage door opener. It is a Coromaster 2000 motor. The closing and opening setting are out and the motor only stops due to resistance.


The Coromaster 2000 does not operate off limit switches. It has a quarter-revolution optical pulse counter. To re-program the open and close limits do the following: Ensure that the door is open at least a couple of feet. Press the reset button once or twice Short out pushbutton and common and hold until close limit and then release. Door should stop at your new close limit. Wait 5 seconds. Short out pushbutton and common and door will open. Hold the short until open limit and then release. Limits should now be set.

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

1 Answer

Craftsman opener is not responding to limit switch on the down phase-- it continues down until the door goes full closed position and auto reverses. any suggestions? I have replaced the limit switch and...


On the side of the motor unit you will find the 'down limit' control. Turn this in the opposite direction of the arrow printed on the cover. It would be a good idea to take the cover off and watch the limit assembly while you are doing this to make sure it contacts before the door hits the floor.

Sep 06, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

I have a Craftsman 1/2 HP chain drive garage door opener.


You need to take the cover off the motor unit and watch how the limit switch assembly works. If the door is not stopping when the contacts make then you have a bad logic board.

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

1 Answer

CRAFTSMAN 1/2 HP OPENER


Ok well the best advise I can give you is to open up your opener case should be a 1/4 nut driver or a Philips head screw driver. Make sure to unplug it first. Once the case is off, find a reqtangle black box with three white plastic screws they are what controls the limits. Chances are they got knocked off wheny ou were putting in the gear. check to make sure the wires are hooked up and find the placement of the limits make sure they can touch each other. Little tip I do for my customs is get a piece of sand paper and rub it agaist the metal contacts for the limits only. (after time lift master openers bind up a film and dont stop where they supposed to.) If your still not sure how the limits work plus in the opener and run it make sure not to put your hands inside the opener and nothing esle is in the way. Then adjest the limits as needed. That should take care of you if not go ahead and make another post ill check back with you.

Feb 09, 2009 | Sears Craftsman LiftMaster Chamberlain...

1 Answer

Chamberlain access master chain drive garage door opener


First unplug the unit for about 5 min. to reset the circuit board. while you are waiting use an ohm heter or multi tester to see is the limit switch works.

If the switch tests good and resetting doesn't help you probably need a new board.

Be sure to also get a suge protector to help save the system in the future.

Hope this helps

Oct 25, 2008 | Sears Craftsman LiftMaster Chamberlain...

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