liftmaster Recent Questions, Troubleshooting Help & Support

The remote may have to be reprogrammed, also make shure the battery is new not just because it,s in a package but because of the freshness date , also check the contac points of the battery in the remote , sometimes they get battery acid on them and could damage it, stiny circuit board ..if all else fails you can purchase a new remote on ebay depending on your garage door opener brand model and frequency ! Hope this helps, Sincerely Glenn

disconnect the power and try to pry the prong in the socket of the light outwords,check the connection in the unit itself

It could be. As I recall, the gears are nylon composite gears so they could be stripped out. First, check the force adjustments to be sure they are adjusted correctly. If the UP force is not adjusted properly, the mechanism could be slipping and the door not opening. Try adjusting it to see if the door will open and close properly. The DOWN force adjustment is for making sure the door seats properly and should not impact the door closing unless you have it set too high, in which case it could be trying to exert excessive force on the door when closed. If these simple fixes do not work, look at the owners and parts manual you received with the opener, or check on line to see the exploded parts manual page from Chamberlain and see if the gears are available before you attempt to dismantle your opener. If you don't have experience in mechanical repairs, or the opener is old, it may behoove you to purchase a new opener on sale with a new warranty. Usually, gears that strip are from a door that is too heavy for the opener, an opener that is of insufficient power for the door, a door that is not properly adjusted and places too much strain on the opener, or an improperly adjusted opener.

This can be one of two problems ! First problem can be that their is something blocking the infrared sensors that would cause the door to go back to the up position but in most cases if their is something blocking one of the sensors the door should not even move and just make a click sound and you will see the lights flashing on the garage door opener , it can also be a mis aligned sensor not pointing directly at the recieving sensor or vice versa! Ok if that was,nt the issue then you can make shure that the door isn,t traveling further then where it needs to stop to be closed, sometimes the chain or belt depending on your opener loosens up and can add an extra inch of travel to the door causing it to return to the up position, to fix this you have 2 adjustments on your opener ...1 will be a pressure adjustment ...you can turn the adjustment to midway #6 to add some pressure so that the opener does not sense the xtra travel of the door , You can also backoff on the downtravel adjustment a turn or two and that will make the door not come down as far ...This adjustment is used to set how far the door goes up and how far you want the door to come down, you will see a picture of the door on both of these adjustments with an arrow letting you know which way to turn the screw ..remember each full turn of the screw equals 1/4" inch of travel to the door just follow the direction of the arrow or turn the screw counter clockwise for less travel !,,,Hope this helps you Sincerely Glenn

error code 14: is telling you that your sensors (6" off the floor) both sides of garage door are misaligned. check sensors, make sure the lights are on, move them around and tighten them down

The liftmaster garage door openers manufactured after 1984 are set through the logic board from the factory with a setting of 4 1/2 minutes, That setting cannot be changed manually but you can by a premium wall control console that lets you override the logic board settings by simply pressing the light function button that allows you to shut the lights off earlier by simply pressing the button or also you can keep the lights on indefinitely by pressing the button twice! The lights will automatically go back into the 4 1/2 minute mode once the door is operated in either the up or down motion. Hope this answers your question! P.S. The premium console comes with a safety vacation lock also and can be purchased through Ebay or through Liftmaster....Remember the Liftmaster name also make the chamberlain brand and the Sears Craftman openers ...They are all cross compatible on the Premium wall console and have 2 wires on them to hook up (low voltage ) so don't worry you won,t get a shock! Just match the red wire to the terminal marked red and the white wire to the terminal marked white and screw onto your wall! Good luck .Glenn

If the sensor sees something under the door, it will stop and blink the lights. So I think you need to check out the motor, there's dial to increase the lifting strength.

Check the photo eye, if it is mis alligned or broken it would cause this type of problem.

Your machine is jammed, meaning the carriage part or trolley that has the swingarm attached to the door has went further then it,s limit! your trolley that has the chain or belt connected to it may be jammed against the stop bolt that is just before the powerhead of your opener. In order to get it to operate again you must loosen the chain and take some tension off of it , you should also remove the stop bolt at this point sine a loose chain can add an extra inch or two to the travel limit when the door is coming up or going down . Once the bolt is removed your garage door opener should work again , be shure to retighten the chain after removing the stop bolt and check your travel limits in the up and down position! Hope this helps you in getting it to work again! Glenn

This issue is almost ALWAYS the battery needs to be replaced. The beeping is because the system is not going to work in a power failure....Batteries on constant and variable charge seem to have much shorter life.

You can purchase a replacement battery assembly from Amazon.com for $69 (I just replaced mine). If your battery backup is mounted on top of your opener, you simply unplug the backup white plug from the back lower right corner of the opener. There are two screws holding the battery pack to the opener, one on each side which need to be removed with a Phillips screwdriver and saved to install the new battery pack. Then simply lift off the old back up power suppl (careful, it's about 8+ lbs) and install the new one, being careful to install the screws snugly and plug in the new backup. (Ceiling mounting is simply unplugging the backup unit and removing the two mounting screws from the ceiling; then reversing for the new unit) The green light will start flashing rapidly showing its charging and will do so for several days. Then it will turn solid green showing a full charge and you are set for years of backup readiness. Some words of caution: Some places sell only the replacement batteries. They do NOT have the same connections as the original batteries. So unless you are willing to purchase crimp-on connectors and do your own wiring, don't waste your money. Plus, if the electronic circuitry is bad and not just the batteries, you will waste money and time. My suggestion is buy the EverCharge as a unit and save the headaches. I did.

No. The sensor is infrared so sunlight shouldn't affect it at all. The sensors are set up so they send a signal to each other, thus the need that they be carefully aligned. They work fine here in the California bright sun where it streams through my open door most of the day.

it needs adjustment, there are usually an adjustment knobs on the unit it self, (check from the owners manual)...

yes very much they both need to be green just try to line them up , good luck

Hi. The sensor with the yellow light is telling you that it is miss-aligned, Usually it only takes getting bumped to knock them out of alignment.
I would slowly turn or adjust the positioning of the sensor.
The one with the yellow light should turn green when it is all the way in line so that the beam is completing it's path.

It's out of adjustment, so the sensor is looking at it like there is an object blocking the door from closing.
It's called the obstruction sensor.
It's there as a safety feature, so that the door doesn't come down and smash anything in the opening.

I hope this helps you out.

Most garage door operators (openers) have infrared safety "beams". The door won't close, even with a wired push button, if something is in the way.

could be the main board. However, I would replace the safety eyes first. They cause all sorts of problems. Hope this helps