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Question posted by rickyb2585 on October 11th, 2021

What's Wrong With Settings.

Garage door will stop/close a 1/2 inch further then set each time it's operated. Until it runs into the ground with enough force to go into safety mode. Also returns to open position 1/2 lower each time.

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Answer #1: Posted by SonuKumar on October 12th, 2021 1:02 AM

This answer was accepted by the poster of the original question.

SonuKumar

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May 9th, 2021

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How do I reset my LiftMaster garage door opener?

Hold the remote in one hand and press the "Learn" button on the motor near the toggle switches. The indicator light will illuminate. Press and hold the button on the remote until the light bulb on the opener blinks, indicating the opener has been reset.

https://homeguides.sfgate.com/reset-remotes-liftmaster-garage-door-opener-67017.html

after reset

https://www.youtube.com/watch?v=fs9tdZ-CvOs

https://www.youtube.com/watch?v=-yhPKG3qIro

https://www.nwdusa.com/wp-content/uploads/2018/06/8155W-Owners-Manual.pdf

Please respond to my effort to provide you with the best possible solution by using the "Acceptable Solution" and/or the "Helpful" buttons when the answer has proven to be helpful.

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Sonu
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Related LiftMaster 8155W Manual Pages

Owners Manual - Page 3

... the warnings that allows the door to close without being in the line of sight of the door is installed, operated, maintained and tested in this Signal Word on the following pages, it will alert you to the possibility of damage to your garage door and/or the garage door opener if you see these Safety Symbols and Signal Words...

Owners Manual - Page 8

... 1 Attach the Rail to the Garage Door Opener To avoid possible SERIOUS INJURY to finger from moving garage door opener: l ALWAYS keep hand clear of the opener. l Securely attach sprocket cover BEFORE operating. 2 Tighten the Chain 1. Slack in the garage door opener) 1/2" (13 mm) 5. No readjustment is closed. To avoid SERIOUS damage to garage door opener, use the bolts removed from the...

Owners Manual - Page 15

...: If the bulbs burn out prematurely due to close . l DO NOT use compact fluorescent light bulbs...maximum light bulb in the fully open position. or To prevent possible OVERHEATING of...turn ON and remain lit for Models 8155W, 8164W and 8165W To prevent possible OVERHEATING...to vibration, replace with A19, standard neck garage door opener bulbs. Insert an A19 incandescent (100W ...

Owners Manual - Page 16

... of the emergency release rope through the handle. Weak or broken springs or unbalanced door could fall. 1. l NEVER use handle to disengage trolley ONLY when garage door is clear of the emergency release rope through the hole in an open or closed. Secure with an overhand knot at least 6 feet (1.83 m) above the top of...

Owners Manual - Page 22

... the garage door opener will enter sleep mode when the door is NO HIGHER than 6 inches (15 cm) above garage floor. above ﬂoor 22 To prevent SERIOUS INJURY or DEATH from closing , the door will stop and reverse to the full open position, and the garage door opener lights will move in the down until the garage door opener has completed 5 cycles upon power up. This required safety...

Owners Manual - Page 27

... sure there is not shorted/broken. 3. Make sure the sensor wire is closing, the door will reverse and the garage door opener lights will glow steadily if they are aligned. 1 2 (invisible light beam...while the door is not shorted/broken. 2. The LEDs in both sensors will flash ten times. If the door is on the opposite side of the door. Power 2 Ensure the Safety Reversing Sensors ...

Owners Manual - Page 31

... garage door. 2. Open the door. The garage door opener will not close from a remote control if the LED in the path of the door. 2. Repeat Program the Travel (see Adjustment Step 1); 3. If the garage door opener closes the door when the safety reversing sensor is misaligned or obstructed). Door MUST reverse on contact with the board. The door will flash 10 times. Place the garage...

Owners Manual - Page 34

... SHOULD GO UNDER A STOPPED, PARTIALLY OPENED DOOR. 6. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. 15. DO NOT install on contact with an unattended operation feature. To avoid SERIOUS PERSONAL INJURY or DEATH from people and objects until completely closed . NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. 5. ALWAYS keep garage door in SEVERE INJURY...

Owners Manual - Page 35

... garage door opener will close from a remote control. power is restored after 4-1/2 minutes. The safety reversing sensors do not effect the opening cycle. Alert2Close The Alert2Close feature provides a visual and an audible alert that can close the door if you can be activated through the open . Your garage door opener is fully open position, and the opener lights will stop...

Owners Manual - Page 41

... 1. Pull down . The trolley will reconnect on the garage door opener until the learn LED goes out (approximately 6 seconds). 2. LEARN Button Black Adjustment Button The images throughout this manual are heard (Approximately 6 seconds). The door can then be fully closed . Operation To Erase the Memory To Open the Door Manually ERASE ALL REMOTE CONTROLS AND KEYLESS ENTRIES...

Owners Manual - Page 42

...license-exempt RSSs. If it is swallowed, immediately notify doctor. l Test the safety reversal system. EVERY YEAR l Oil door rollers, bearings and hinges. Reapply a small layer of white lithium grease to provide... EVERY MONTH l Manually operate door. The garage door opener does not require additional lubrication. This equipment generates, uses and can be sure door opens and closes fully.

Owners Manual - Page 44

... 44 If the door is moving stops or reverses. If door is open and close and the Safety reversing sensors are steady and not flickering. module if necessary. 4 6 The garage door opener will not close the door. The garage door opener will not turn off when the door is not binding or sticking attempt to reprogram travel (refer to page 30). 4 5 Opener runs approximately 6-8" (15-20...

8155W 8164W 8165W 8160 8160WB Users Guide - English French - Page 2

... 14 Troubleshooting 14 Repair Parts 15 Warranty 15 Automatic Garage Door Opener Safety & Maintenance Guide 16-17 Safety Symbol and Signal Word Review This garage door opener has been designed and tested to offer safe service provided it . Unattended Operation The Timer-to-Close (TTC) feature, the myQ Smartphone Control app, and myQ Garage Door and Gate Monitor are examples of unattended...

8155W 8164W 8165W 8160 8160WB Users Guide - English French - Page 4

... in .) distance is encouraged to try to comply with an unattended operation feature. Important Safety Instructions IMPORTANT SAFETY INSTRUCTIONS To reduce the risk of children. NO ONE SHOULD GO UNDER A STOPPED, PARTIALLY OPENED DOOR. 6. Use caution when using devices or features providing unattended close. ALWAYS KEEP GARAGE DOOR PROPERLY BALANCED. DO NOT install on , the user is...

8155W 8164W 8165W 8160 8160WB Users Guide - English French - Page 8

... disengage the lockout feature, pull the handle straight down and back. Operation To prevent possible SERIOUS INJURY or DEATH from a falling garage door: • If possible, use emergency release handle to disengage trolley ONLY when garage door is CLOSED. Pull down on the next time the opener is activated. 8 For the complete manual visit LiftMaster.com/Customer-Support...

8155W 8164W 8165W 8160 8160WB Users Guide - English French - Page 10

... to white terminal and white/black wires to the garage door opener BEFORE installing the safety reversing sensor. The LEDs in both sensors will ﬂash ten times. Operation The Protector System® (Safety Reversing Sensors) Be sure power is NOT connected to gray terminal. The door will not close if the sensors have not been installed and aligned...

8155W 8164W 8165W 8160 8160WB Users Guide - English French - Page 13

...close the door. The garage door opener will ﬂash 10 times. 2 If the door stops and does not reverse on the ﬂoor, centered under the garage door. Without a properly installed safety reversing sensor, persons (particularly small children) could be SERIOUSLY INJURED or KILLED by a closing garage door. 3.1 Open the door. If the garage door opener closes the door when the safety...

8155W 8164W 8165W 8169W Users Guide - English French - Page 2

... Automatic Garage Door Opener Safety & Maintenance Guide 16-17 Safety Symbol and Signal Word Review This garage door opener has been designed and tested to close without being in the line of sight of the door is considered unattended close and are to your garage door and/or the garage door opener if you do not comply with the cautionary statements that accompany it is installed, operated...

8155W 8164W 8165W 8169W Users Guide - English French - Page 4

... until completely closed . Failure to operate the equipment. Operation is subject to the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between users/bystanders and device. However, there is no obstructions to radio communications. These limits are to pull garage door open . The door could result in an open door falling...

8155W 8164W 8165W 8169W Users Guide - English French - Page 8

... open or closed if possible. 2. Pull down on the next time the opener is CLOSED. To Open the Door Manually NOTE: Disengage any door locks before proceeding. 1. The door should be raised and lowered manually as often as necessary. 2. To disengage the lockout feature, pull the handle straight down and back. Operation To prevent possible SERIOUS INJURY or DEATH from a falling garage door...