Question about liftmaster Chamberlain Garage Door Opener Transmitter 300MC

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1/2 hp liftmaster closer stalls while closing in cold weather

Both my dad and my cousin have liftmaster closers and are experiencing the same problem. The door operates fine in
warmer temperatures but when it gets cold, like yesterday
about -10. The door will only close if the wall controls are
used and you hold the close button till the door is down??
Have had the installer back but have not gotten it resolved.

Posted by on

  • deepak patel Feb 01, 2009

    I have the same problem. Closes with wall control but not with the remote controls in the cold wheather.

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  • 112 Answers

Make sure your force settings are at least turned up to 5

Posted on Jan 30, 2009

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My son disengaged the latch while the door was open. Then he manually closed then opened the door. When I got home the door was half open and not latched. the trolley on the track was approx 3ft away


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On down door reverses in cold weather


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Garage door wont close with remote control or home link in car. Will only close if continuously hold wall mount button during entire door travel


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I recommend this to everyone with garage door opener problems:
Use the pull cord and disconnect the opener from the door.
Operate the opener and let the carrier slide back away from the door. Is the carrier moving smoothly when disconnected?
Next, lift the door by hand from the bottom to the top. Is it moving smoothly?
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Are all cables in all the pulleys, there are 4.

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Liftmaster Chamberlain Garage Door Opener Transmitter 300MC: Hi, The belt that connects the motor to the pul...


IF IT IS ONE OF THE NEWER BELT DRIVE OPERATORS THE BELT ATTACHMENT IS ADJUSTABLE.

IF IT IS ONE OF THE VERY OLD OPERATORS AND YOU IN FACT HAVE THE CORRECT BELT YOU CAN NORMALLY SET THE BELT ON THE SMALL PULLY AND LAY IT AGAINST THE LARGE PULLY BY TURNING THE LARGE PULLY YOIU CAN ROLL IT ON.

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Liftmaster 1/2 HP Garage Door opener won't open or close. Has been working fine until I pulled out this morning. The door will move freely if I disengage from opener. Went up ladder to see chain not...


The shaft on these garage door motors are not direct drive systems. You'll have to open up the box to see what the actual problem is. I have had stuff like this happen where a gear just slipped out of place.

http://www.aaadooropeners.com/?gclid=CLH3wt628p8CFVZS2goduwSLYQ

Here is a link for a parts supplier. I don't know your model but it looks like most of the Liftmaster worm screw gears and drive gears are plastic so it's possible that one of them has cracked.

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Have a Chamberlain liftmaster professional 1/2 horsepower garage door opener that is only opening 6-12 inches and then stops. Just started in cold weather. If I keep retrying it, the door will eventually...


if you can open door Manually- find the FORCE adjustments-Not Travel. These might be "blue" in color. Increase the UP slightly. this adjustment in the cold weather is due to door hardware dry, lube rollers/hinges with wd-40 while door is down, lube every 30 days, keeps it moving quietly...

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My garage door opener fails to send the door down when the weather is cold. It works when it is warm. Any suggestions?


I live in Florida, my spring broke when it got cold. The repairman said that the coil spring has to be lubricated frequently, especially when cold. Try spraying it down with silicone or wd 40 and see if it helps. You could also save the spring from breaking.

Dec 30, 2009 | liftmaster Chamberlain Garage Door Opener...

1 Answer

All of a sudden our garage door stopped working and the light flashes 10 times. Liftmaster Model 2265 1/2HP. Any ideas?


We just had the same problem this morning (cold weather can mess these things up). Not sure what you mean by "not working". Ours would open part-way and then stop (or close part-way and then stop), but could open/close all the way if we held the button on the wall down the entire time it was lifting. After much research online, we ended up checking the sensors at the bottom of the garage door tracks to make sure that the green light was solid (not flashing). Ours flashed a bit, so we cleaned the "eye" and tightened it in place. Once the green was solid, we thought we were done, but still had the problem.

Then we began adjusting the screws on the unit itself that show pictures of the door opening and closing. We thought we were adjusting the torque in the unit (because we read online that cold weather can make it more difficult for the motor to work), but in reality we were adjusting the opening and closing "distance". Apparently cold weather can also do something to the tracks, which can require adjustments to be made. Something to do with ground swelling...

Anyway, we also discovered that when we had closed the door manually (red pull-cord) the night before for lack of a better solution, it never properly locked back into position, which was adding to the problem.

So, first, try cleaning the sensors. You need a solid green light for them to function properly. Second, if you have used the manual cord, make sure the arm that it attaches to is locked back into position. You can accomplish this by pulling the manual cord, manually closing the garage, and then pushing the button on the wall. The door arm should lock into place. Third, try using a screwdriver to adjust the open/close distance. Start with a 1/4 turn for each position, and play with it until you find the right setting.

If these suggestions don't address your problem, this link worked for us...http://forum.doityourself.com/doors-windows/368278-garage-door-wont-go-down-cold-weather.html

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1 Answer

Door won't close unless I hold the button all the way down.


make sure the eyes are clean and aligned if the opener thinks something is obstructing its path it will not close

Oct 07, 2009 | liftmaster Chamberlain Garage Door Opener...

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