Home » LiftMaster » Garage Door Openers » LiftMaster 8550

LiftMaster 8550 Support Question

Find answers below for this question about LiftMaster 8550.
Need a LiftMaster 8550 manual? We have 1 online manual for this item!

LiftMaster Overview Questions Manuals Reviews Videos Research

Question posted by Sgtjust on January 8th, 2014

What Does Error Code 12 On Liftmaster Opener Mean

The person who posted this question about this LiftMaster product did not include a detailed explanation. Please use the "Request More Information" button to the right if more details would help you to answer this question.

I Know the Answer!

I have the same question
Request More Information

Current Answers

There are currently no answers that have been posted for this question.
Be the first to post an answer!

Remember that you can earn up to 1,100 points for every answer you submit. The better the quality of your answer, the better chance it has to be accepted.

Related LiftMaster 8550 Manual Pages

8550 Manual - Page 1

...and properly aligned. ■ Periodic checks of your garage door opener. ■ This garage door opener is located on a one -piece door. 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 INSTALL THE PROTECTOR SYSTEM 17-20...

8550 Manual - Page 2

.... • Disable ALL locks and remove ALL ropes connected to garage door BEFORE installation and operating garage door opener to avoid entanglement. 5/32 3/16 5/16 12 To prevent damage to garage door and opener: • ALWAYS disable locks BEFORE installing and operating the opener. • ONLY operate garage door opener at 120 V, 60 Hz to avoid malfunction and damage. 1/2 5/8 1/4 7/16...

8550 Manual - Page 6

... properly balanced and lubricated garage door. Upon completion of SEVERE INJURY or DEATH: 1. Door MUST reverse on.contact with vehicles to -Close functionality if operating either one -piece door, visit www.liftmaster.com for installation instructions. 6 READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS. 2. NEVER connect garage door opener to power source until instructed...

8550 Manual - Page 7

...garage door might NOT reverse when required. • DO NOT enable the Timer-to-Close functionality if operating either one -piece door, visit www.liftmaster.com for the top edge of Garage Door...structural supports. 1.3 Open 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 wall or ...

8550 Manual - Page 12

...garage door manufacturer for direct attachment of door bracket. FIGURE 1 Figure 1 shows one piece of the door. 8.3 Mark, drill holes and install as the horizontal brace. NOTE: Many door reinforcement kits provide for an opener installation door...Garage Door 8.1 Center the door bracket on wood doors. For the vertical brace, 2 pieces of Garage Door 12 Drill 5/16" holes through the door...

8550 Manual - Page 14

... correct wires are no obstructions to operate or play with door control push buttons or remote control transmitters. NOTE: Older LiftMaster accessories and third party products are not compatible.Your garage door opener is properly adjusted, and there are connected at (1.5 m), and away from a closing garage door. The wires hole and drill a 5/32 inch (4 mm) hole. (3 mm...

8550 Manual - Page 21

... 7/8" hole. 1.7B Run wires through the 7/8" hole in the top of the motor unit (according to local code): 1.1B Be sure power is grounded. OPTION B PERMANENT WIRING If permanent wiring is required by your garage door opener has a grounding type plug with moving parts. 1.10B Reinstall the cover. THERE ARE TWO OPTIONS FOR CONNECTION...

8550 Manual - Page 26

...2 Test the battery 2.1 Unplug the garage door opener. NOTE: The garage door opener may explode. Use a Phillips head screwdriver to remove the battery cover on the garage door opener. 1.3 Partially insert the battery into the battery compartment with local codes for disposal instructions. 1 Install the battery 1.1 Unplug the garage door opener. 1.2 Open the light lens on battery power or...

8550 Manual - Page 28

... GO UNDER A STOPPED, PARTIALLY OPENED DOOR. 6. Garage door MUST reverse on the floor. 11. An improperly balanced door may NOT reverse when required and could move unexpectedly. The door could result in SEVERE INJURY or DEATH. 12. NO ONE SHOULD CROSS THE PATH OF THE MOVING DOOR. 15. DO NOT enable the Timer-to garage door opener BEFORE making ANY repairs...

8550 Manual - Page 29

..., which changes with greater control over your garage door opener, see the Door Control section. power is restored after 4-1/2 minutes. Features Your garage door opener is equipped with features to provide you with each use, randomly accessing over 100 billion new codes. When the door is closed and the garage door opener is activated the door will detect an obstruction in the down...

8550 Manual - Page 30

... working condition. The MAS feature MUST be installed in the event of the light timing can be used ONLY with the garage door opener the screen will display the Diagnostic Code. Test the door control by accessing the menu using this feature. The duration of an accidental lock out when using the navigation buttons. TTC...

8550 Manual - Page 31

...12 or 24 hour clock and show /hide the temperature. LOCK: Enable/disable lock. PROGRAM: Add remote controls, MyQ™ devices, an extra remote button to view the Features menu. Refer to the descriptions below "MENU" to control your garage door... to the garage door opener using the door control see... garage door opener. TTC SETTINGS (for garage door opener light... one-piece door. TEMPERATURE:...

8550 Manual - Page 32

.... Then press the ENTER button. The garage door opener lights will flash (or two clicks will be heard) when the code has been programmed. Repeat the steps above...Control: Press the button on the garage door opener. Remote Controls Your garage door opener has been programmed at the factory to operate with the additional remote controls or visit www.liftmaster.com. press to operate your ...

8550 Manual - Page 33

...button except the button that was just programmed. 7 To test, press the programmed button on garage door opener until the learn LED goes out (approximately 6 seconds). 2 Immediately press and hold the learn...if the garage door opener light bulb blinks. To Erase the Memory ERASE ALL REMOTE CONTROLS AND KEYLESS ENTRIES 1 Press and hold the learn button on the remote control... All codes are now ...

8550 Manual - Page 34

.... • Test the battery and consider replacing the battery to Comply with FCC Standards for changing the code setting or replacing the batteryTHEREARENO OTHER USER SERVICEABLEPARTS. Do not grease the door tracks. Tested to ensure the garage door opener will reconnect on the emergency release handle. If it is swallowed, immediately notify doctor. The trolley...

8550 Manual - Page 35

... the receiving sensor (green LED) by ensuring the LED is hanging or mounted on the garage door opener flash the diagnostic codes. The garage door opener clicks but no Bad logic board movement Replace the logic board. 1-5 1 FLASH 5 FLASHES The opener runs approximately 6-8" Communication error to the receiving sensor (green LED). Reattach wire or replace wire (22 gauge wire...

8550 Manual - Page 36

... for no Obstruction, binding or If your door is working properly. My garage door opener light(s) will not turn off when the door is open: The garage door opener is equipped with a feature that will still not activate the door check the diagnostic codes to ensure the garage door opener is binding or sticking, contact a trained door systems technician. These features can be misaligned...

8550 Manual - Page 37

...: 1-800-528-9131 Or visit us online at: www.liftmaster.com Before calling, please have access to : The Chamberlain Group, Inc. 6050 S. Repair Parts Rail Assembly Parts DESCRIPTION 1 Belt - If you have the model number of the garage door opener. for 7 foot door Belt - for 10 foot door 2 Belt Pulley Bracket 3 Master Link 4 One-Piece Rail...

8550 Manual - Page 38

Repair Parts Garage Door Opener Parts 11 9 4 3 1 12 5 2 10 4 3 7 8 6 38 DESCRIPTION 1 Sprocket and Sprocket Cover with Screws 2 End Panel with labels, battery cover and light socket 3 Light Lens 4 Light Socket 5 Transformer 6 Cover 7 Motor and Travel Module 8 Travel Module 9 End Panel with all labels and light socket 10 Receiver Logic Board 11 Line Cord 12 Filter Board...

8550 Manual - Page 39

... a 4-digit PIN. Accessories 828LM 823LM 825LM MyQ™ Internet Gateway: 829LM Internet enabled accessory which connects to the computer and allows you to protect LiftMaster® garage door openers against damage from lightning and power surges. Sensor can be easily deactivated when desired. 39 Remote Light Control: 877MAX Automatically control your lights using your...