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Question posted by nat6579 on October 18th, 2021

Error 42 Code

I do i get rid of the Error 42 code on my Liftmaster Garage Door

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Answer #1: Posted by SonuKumar on October 19th, 2021 9:10 AM

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https://www.youtube.com/watch?v=CGhb5-0ijxw

https://www.youtube.com/watch?v=CGhb5-0ijxw&t=27

https://www.youtube.com/watch?v=CGhb5-0ijxw&t=56s

https://www.youtube.com/watch?v=CGhb5-0ijxw&t=116s

Battary not dedecting

https://www.nwdusa.com/wp-content/uploads/2019/08/LMWLED-owner-manual.pdf

https://support.partner.liftmaster.com/s/article/Diagnostic-codes-for-garage-door-openers-1484145692749

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Related LiftMaster 8550 Manual Pages

8550 Manual - Page 1

... with sectional doors. www.liftmaster.com The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 Contents BELT DRIVE GARAGE DOOR OPENER.. 1 PREPARATION 2 ASSEMBLY 4 INSTALLATION 6-13 INSTALL THE DOOR CONTROL.....14-16...REPAIR PARTS 37-38 ACCESSORIES 39 WARRANTY 40 Belt Drive Garage Door Opener Model 8550 FOR RESIDENTIAL USE ONLY Write down the following information for ...

8550 Manual - Page 2

... the following pages, they will alert you to offer safe service provided it will alert you to the possibility of damage to the garage door. 2. If your garage door and/or the garage door opener if you do not comply with the warnings that accompany it. Torsion Spring Extension Spring Tools Needed To prevent possible SERIOUS INJURY...

8550 Manual - Page 3

... arm E. Trolley G. Sprocket cover and screws K. GARAGE DOOR OPENER ASSEMBLY A. Garage door opener K J. Depending on the garage door opener model purchased. Door bracket D. The images throughout this manuals are not included in this manual. Pulley and bracket C. Safety reversing sensors with the sprocket cover] Installation H2 Hex ...

8550 Manual - Page 4

.... 1.5 Attach the sprocket cover over the • Securely attach sprocket cover BEFORE sprocket. from moving garage door opener: 1.1 Remove the two bolts from the rail, belt, operating. operating opener. 1.2 Align the rail and the styrofoam over the garage door opener sprocket and attach with the sprocket cover) 4 Cut the tape from the top of the • ALWAYS...

8550 Manual - Page 6

...6 feet (1.83 m) above floor. 6. Upon completion of SEVERE INJURY or DEATH: 1. ALL repairs to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 NEVER connect garage door opener to power source until instructed to avoid entanglement. 5. They could result in SEVERE INJURY or DEATH. 3. Place manual release/safety reverse...

8550 Manual - Page 7

... spring or center bearing plate is in your door to loosen, move or adjust garage door, springs, cables, pulleys, brackets, or their hardware, ALL of which are installing the garage door opener on the header wall 2" (5 cm) above the door. Draw an intersecting horizontal line on a one -piece or swinging garage doors. This height will provide travel as shown...

8550 Manual - Page 9

... HARDWARE H5 Clevis Pin 5/16"x2-3/4" H11 Ring Fastener 4 Position the garage door opener To prevent damage to garage door, rest garage door opener rail on 2x4 placed on top section of door. 4.1 Remove the packing material and lift the garage door opener onto a ladder. Slide the outer trolley toward the garage door opener. NOTE: Use the packing material as a protective base for setting the...

8550 Manual - Page 10

... brackets into masonry. For ALL installations the garage door opener MUST be connected to the structural supports before installing the garage door opener. 5.2 Make sure the garage door opener is aligned with the bolts (H2), lock door. Installation 5 Hang the garage door opener To avoid possible SERIOUS INJURY from each side of the garage door opener to the support bracket. 5.3 Cut both...

8550 Manual - Page 11

... possible, use short neck or specialty light bulbs. 6 Install the light bulbs 6.1 Pull on the top center of all vehicles to pull door open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is CLOSED. If rope knot becomes untied, you could result in the trolley release arm.

8550 Manual - Page 21

... cord, 2-wire adapter, or change plug in the garage door opener into a grounded outlet. 1.2A DO NOT run garage door opener at this time. If the plug doesn't fit into a grounding type outlet. Be sure the opener is required by your local code, refer to circuit. 1.2B Remove the garage door opener cover and set aside. 1.3B Remove the attached green...

8550 Manual - Page 26

... or INJURY to persons: • Disconnect ALL electric and battery power BEFORE performing ANY service or maintenance. • Use ONLY LiftMaster part # 485LM for disposal instructions. 1 Install the battery 1.1 Unplug the garage door opener. 1.2 Open the light lens on the right side panel of battery in fire. ALWAYS wear protective gloves and eye protection when...

8550 Manual - Page 29

...which changes with each use, randomly accessing over 100 billion new codes. USING YOUR GARAGE DOOR OPENER The garage door opener can close . When the door is in ; If the garage door opener senses an obstruction while closing there will open garage door and the safety reversing sensor infrared beam is interrupted while opening cycle. However, you with greater control over the light bulbs on...

8550 Manual - Page 30

... of mind when the home is off . AUTOMATIC LIGHT Motion Sensor Factory default is NOT intended to be used ONLY with the garage door opener the screen will display the Diagnostic Code. NAVIGATION BUTTONS Use the navigation buttons to resume normal TTC operation. The lights will come on . The following features are misaligned. Factory...

8550 Manual - Page 31

..., MyQ™ devices, an extra remote button to operate the garage door opener. TRANSMITTERS: Displays the number of remote controls, MyQ™ devices, door controls and keyless entries currently programmed to control your garage door CONTRAST: Adjust the contrast of the screen. DISPLAY ERROR: Displays any errors that have occurred. FEATURES Press the navigation button below the down...

8550 Manual - Page 32

...Remote Control: Press the button on the side of your choice on the garage door opener. press to continue. OR 1 2 3 ABC DEF 4GHI 5 6 JKL...garage door opener lights will flash (or two clicks will be heard) when the code has been programmed. Remote Controls Your garage door opener has been programmed at the factory to operate with the additional remote controls or visit www.liftmaster...

8550 Manual - Page 33

...control button you want to use . 33 Repeat until the light bulb blinks. All remote control and keyless entry codes are now erased. The garage door opener will light. ERASE ALL DEVICES 1 Press and hold the learn button again until the learn LED goes out ... the button that was just programmed. 7 To test, press the programmed button on the garage door opener. All codes are now erased.

8550 Manual - Page 34

...door tracks. The door can then be sure door opens and closes fully. NOTICETo complywith FCC and or IndustryCanada rules(IC), adjustment or modifications of the holder for changing the code... recharge, disassemble, heat above 212°F (100°C) or incinerate. The garage door opener does not require additional lubrication. If it is swallowed, immediately notify doctor. Reapply...

8550 Manual - Page 35

... 6-8" Communication error to and from that sensor. Troubleshooting Diagnostic Chart Your garage door opener is programmed with the and the light(s) will flash installed, connected, or amber LED is NOT lit, check the wire and connections for incorrect wiring or a pinched wire. If the sending sensor with self-diagnostic capabilities. DIAGNOSTIC UP CODE ARROW DOWN...

8550 Manual - Page 36

... reason or after sticking door touching the floor 4-5 4 FLASHES 5 FLASHES The opener runs Communication error to Disconnect all power,...door stops while opening Obstruction, binding or Manually open and close the door. The LEDs on the door conrol blink: If you have been obstructed or when the motion sensor on the door control detects movement in the diagnostic codes: My garage door opener...

8550 Manual - Page 39

... connects to the computer and allows you to protect LiftMaster® garage door openers against damage from lightning and power surges. Garage Door Monitor: 895MAX Monitor open and close them from 1999present. System Surge Protector: The Garage Door Opener Surge Protector is designed to monitor and control garage door openers and lighting accessories powered by MyQ™ home activation...