How to program a remote control using the LEARN button on the garage door opener How to program a wireless keyless entry using your garage door opener's LEARN button How to program the travel on a LiftMaster¨ Security+2.0ª garage door opener How to disconnect your garage door from the garage door opener How to program the Model 877LM Wireless Keyless Entry using the Smart Control Panel How to program a remote control using the Smart Control Panel How to turn off the light feature using the Smart Control Panel How to change the lock settings using the Smart Control Panel How to reset the Wi-Fi hub of your MyQ Garage 821LM How to change the PIN for the Model 877LM keyless entry? How to erase the memory of your garage door openerHome improvement topicsBrowse Categories:Full list »LiftMaster Garage Door Opener Won’t Close DoorI’ve been a huge fan of LiftMaster Garage Door Openers for years. I like them so much because they work very well and last a long time.

So this winter when I started having trouble with my door opener I was a bit puzzled and frustrated. However, as you’ll learn below the solution to this problem was extremely easy to fix and something you should know for the future.garage door service baton rougeThe Problem: The door would always open fine but then would have trouble closing. glass door repair santa rosa caSometimes it would close part way before stopping and reversing and other times it wouldn’t open at all. cal lock for double doors - whiteAnother clue to the mystery was if you held the wall switch the door would completely close. old doors for sale cairns

However, the remote would not be able to close the door even if you held the button.The Solution: Adjusting the Protector System® sensors fixed my problem and the door now operates correctly.4 panel shaker door glazedThe Protector System® Safety Reversing SensorsYears ago garage door openers were required to utilize safety sensors to prevent doors from closing on small children. upvc door frame costLiftMaster uses the Protector System® which projects an invisible light beam across the door opening and automatically opens the door if something/someone crosses it’s path.outdoor fire pits austin txSo at first I didn’t think the Protector System® was to blame. Each time the door was having trouble I’d get out of my truck and check to be sure the path between the sensors was all clear.

Each time I’d discover nothing in the way so I figured the sensors were fine.Adjusting Reversing SensorsIn order for the safety reversing sensors to work properly they must be aligned correctly. One of the sensors is a sending unit (shoots the light out) and the other is a receiver which ‘catches’ the light beam. The following comes from the User’s manual:ALIGNING THE SAFETY REVERSING SENSORS Plug in the opener. The indicator lights in both the sending and receiving eyes will glow steadily if wiring connections and alignment are correct.The sending eye amber indicator light will glow regardless of alignment or obstruction. If the green indicator light in the receiving eye is off, dim, or flickering (and the invisible light beam path is not obstructed), alignment is required. Loosen the sending eye wing nut and readjust, aiming directly at the receiving eye. Loosen the receiving eye wing nut and adjust sensor until it receives the sender’s beam. When the green indicator light glows steadily, tighten the wing nut.

So there you have it. If your garage door opens ok but won’t close then it’s possible the safety reversing sensors are not correctly aligned. Don’t just assume that if the path is clear that the sensors are ok. This problem bugged me for several months. Hopefully after you read this you won’t have the same problem in the future. About the authorNot what you're looking for? Search for more articles here. Enter keywords like, 'insulation' or 'kitchens' etc to find your topic.25 CommentsHow do I test or troubleshoot the safety reversing sensors? The safety reversing sensors must be connected and aligned correctly before the garage door opener will move in the down direction. Typically issues with the safety sensor wiring occur because of a poor connection, incorrectly connected wires, or a short in the wire from a staple. NOTE: If you are unable to get the door closed and the safety sensors are the issue, the garage door can be closed by pressing and holding the Door Control push bar until down travel is completed.

If both safety sensor LED lights are not lit Security+ 2.0 garage door openers have an energy conservation feature. If the garage door opener is Security+ 2.0, have the customer activate the door to determine if the opener was only in sleep mode.  See Security+ 2.0 energy conservation feature Check for incorrect wiring between the sensors and the garage door opener. Verify the wire connections are correct on the garage door opener. The solid white wires connect (insert) to the white terminal (2) and the white/black wires connect to the grey terminal (3). NOTE: The amber LED on the sending sensor will glow regardless of alignment or obstruction. If the green LED on the receiving sensor is off, dim, or flickering (and the invisible light beam path is not obstructed), alignment is required. See How do I align my safety reversing sensors? Test the safety sensor wires. Remove the sensors from the brackets. Remove the wires from the wire nuts or cut the sensor wires 12" from the sensors.